HP 12000 HP VLS Solutions Guide Design Guidelines for Virtual Library Systems
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- HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 1
HP VLS Solutions Guide Design Guidelines for Virtual Library Systems with Deduplication and Replication Abstract This document describes the HP Virtual Library System and its concepts including automigration, deduplication, and replication, to help you define and implement your virtual tape library - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 2
to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 3
2 Concepts 9 Disk-based Backup and Virtual Tape Libraries 9 Problems Addressed by Virtual Tape Libraries 9 Integration of Disk in Data Protection Processes 9 Where Virtual Tape Fits in the Big Picture 9 HP VLS and D2D Portfolio 10 Typical VLS Environments...11 Typical D2D Environments 11 What - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 4
Environments...43 VLS Benefits...43 VLS9000-series and VLS9200 Configurations 44 VLS Technical Specifications 45 How it Works...52 VLS Scalability...52 VLS Automatic Performance Load Balancing 54 VLS Warm Failover...55 Implementation...55 Capacity Licensing...55 Virtual Libraries/drives/cartridge - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 5
Models 83 Backup to Non-shared Virtual Libraries 83 Backup to a Shared Virtual Library 84 Sizing the Tape Library...85 Restoring from Automigration Media 85 6 Accelerated Deduplication 87 How it Works...87 Accelerated Deduplication Implementation 91 Supported Backup Applications and Data Types - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 6
127 Replicating a Subset of Virtual Cartridges - a Use Case 128 9 VLS Configuration and Backup Application Support and Other Resources 154 Related Information...154 Documents...154 Websites...154 Contacting HP...154 Before you contact HP...154 HP contact information...155 Subscription Service - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 7
Document Conventions and Symbols 155 Glossary 157 Index...158 Contents 7 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 8
. See the "Glossary" for the definition of acronyms and specific terms. NOTE: This guide replaces the HP StorageWorks Virtual Library System Solutions Guide, the HP StorageWorks Deduplication and replication solutions guide, and the HP StorageWorks Deduplication solutions guide. 8 Introduction - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 9
Tape Libraries Problems Addressed by Virtual Tape Libraries You can optimize your backup environment with VLS and D2D if you are: • Not meeting backup windows due to slow servers. • Not consistently streaming your tape drives. • Dealing with restore problems caused by interleaving. • Performing many - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 10
potential players in your backup environment. HP VLS and D2D Portfolio HP offers a wide range of disk- and less worry. The entry level D2D100 series Backup System meets the needs of small businesses the needs of smaller IT environments. HP Virtual Library Systems are known for their easy integration - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 11
Figure 2 HP Virtual Tape Library Product Range Typical VLS Environments In a typical enterprise backup environment, there are multiple application servers backing up data to a shared tape library on the SAN. Each application server contains a remote backup agent that sends the data from the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 12
is required, virtual tape offers a more easily managed, higher performing solution. Consider a file library system if: • The application is in a LAN or LAN/SAN hybrid configuration. • Fewer than four servers write data to secondary disk storage. • You can redeploy existing arrays as secondary disk - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 13
. or per TB. Higher management overhead. Storage efficiency gained through compression. Lower management overhead. Business Copy Using a business-copy solution (array snapshots/clones) generally involves a much higher cost than a virtual library system. You might, however, implement such - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 14
feature available with HP Virtual Library Systems (VLS), and HP Dynamic deduplication, an integrated feature with HP D2D Backup System. Both HP deduplication solutions offer the following benefits: • Longer retention of data. • Faster, less expensive recoveries and improved service levels. • Fewer - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 15
Table 2 (page 15). Table 2 HP Deduplication Solutions HP Accelerated deduplication HP Dynamic deduplication • Intended for enterprise users an example of storage savings achieved with deduplication. However, many factors influence how much storage is saved in your specific environment. Based on - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 16
additional information on optimizing your deduplication performance. Target-based Deduplication VLS and D2D deduplication is target-based; the process is running to store multiple generations of backups. Be sure to create enough virtual tape capacity to contain your entire retention policy, and the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 17
not freed up. As in the example above, you should create enough virtual tape capacity to hold backups for your entire retention policy but no more well. Note that replication is within device families (VLS to VLS, D2D to D2D). HP Replication Solutions Most companies now recognize the importance of - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 18
changing of physical tapes, and the process is prone to human error. HP replication, available on its VLS and D2D systems, now offers the solution to both these problems. You can replicate local backup data (virtual cartridges) between sites in a reliable, automated manner at a fraction of the costs - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 19
duplicate data to be detected and stored only once on the HP VLS or D2D system also allows only the unique data to replicate bandwidth links at correspondingly lower price points. In addition, backup at remote offices can be automated to a local virtual tape library and then replicated back to - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 20
can deploy the HP VLS and D2D systems for replication in many ways depending on your requirements. You should understand the terminology associated with deduplication and replication. The key terminology for replication deployment: • Source: A series of slots/cartridges in a virtual library that act - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 21
in the virtual library). Alternatively, each source can have its own dedicated virtual library. Up to four remote VLS sites can copy to a single HP VLS at the deployment: ◦ Active-Active: Each site requires a 4-node/4-array VLS9000 (with deduplication) shared between backups and replication target, - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 22
device C) is not yet supported. Backup Application Interaction with Replication The replication in both the VLS and D2D systems is mirroring target virtual library from the source device's backup application: • For VLS systems, the replication target is a subset or an entire virtual library that is - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 23
). Replication Limitations VLS and D2D replication may not work in every environment. Understand the possible limitations: • Do not confuse Virtual Tape Library replication with "high availability/continuous access" which is a type of full bandwidth replication used on Disk Array technology whereby - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 24
section uses use models to explores many of the concepts you must consider when VLS. For example: ◦ Data that needs a better service level than going directly to tape but does not need the highest service level (split mirror, for example). ◦ Slow servers in your current backup topology. Supported - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 25
one tape drive. These are good candidates for VLS because you can configure multiple virtual tape drives, disable multiplexing, and then backup of the Developer & Solution Partner Program web page: http:// h21007.www2.hp.com/dev/. ◦ Data that you want to electronically off-site using deduplication - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 26
backup administration, use the fewest number of virtual libraries. For example, use one virtual library per backup application. Single Library The single-library use model is a many-to-one configuration -- all hosts see one communal library. This is the default configuration. 26 Backup Solution - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 27
to VLS in a Simple Deployment (VLS9000-series with One Shared Library Shown) Benefits of Single Library Systems • This use model is easy to manage. • It is easy to copy through the backup application because you already have shared devices and they all see and are seen by a copy engine or server - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 28
Figure 12 Backup to VLS in a Simple Deployment (VLS9000-series with Four Dedicated Libraries Shown) Benefits of Multiple Library Systems The assignment of applications. Configure one virtual library per backup application • You have multiple SAN fabrics. Configure one virtual library per SAN • Your - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 29
VLS supports the option of presenting any virtual library Many enterprise backup applications (such as HP Data Protector, Symantec NetBackup, etc.) support dual paths to the library change device and will automatically switch over to the alternate path if the primary path fails. Multipathing virtual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 30
application and the transport interface. HP recommends a blocksize of 256 KB (the maximum supported) for the VLS. LAN-free Backups All enterprise virtual library you do not have to provide maximum performance per LAN-free backup stream as needed on physical tape drives. You can create many virtual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 31
tapes to off-site storage. There are different methods of creating the copy on physical tape: ◦ Use the backup application to copy data from the virtual library to the physical library (preferred method). ◦ Use the automigration functionality within the VLS (which turns the VLS into a disk-cache of - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 32
means that the virtual library type and virtual drive type and virtual cartridge size do not need to match the physical library in any way SAN Hybrid Environment Media Server Considerations To support the background copy of backup data from the VLS to a tape library, use one or more of your existing - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 33
of a backup application. • Copy only the specific files you need onto physical tape. • Not waste tape storage as physical tapes can be fully filled. • Monitor and track copy jobs from the backup application. • Use any tape library that is supported by the backup application. Considerations for - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 34
be aware of any copy failures. • Echo copy can only use the tape libraries supported by the VLS firmware (for example, HP MSL, EML, ESL-E libraries). • Because echo copy automatically links the virtual and physical tapes (to maintain media management with enterprise backup applications), human error - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 35
copies whole cartridges and because the size of deduplicated virtual cartridges is generally 50-200 GB, a large amount . The replication system on the VLS creates and maintains a cartridge mirror offsiting when you consider all manual costs. • The replication target library is not visible to the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 36
Protector cell server to another cell server). You can do this manually by checking the replication status in the GUI and starting the import in the VLS environment is the same as the format in environments not using a virtual tape library. To restore from tape, place the tape in a library or drive - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 37
This test should report 100-150 MB on a VLS. Before starting the test, HP recommends creating a new virtual library to avoid overwriting any data on the current libraries. Use the frontpanel function on the Library and Tape Tools to manually "move" a cartridge into the tape drive. • Sys Perf - This - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 38
Solutions Design Guide available at the same web location has detailed instructions and best practices for configuring the tape drivers for the following operating systems: • HP-UX • Microsoft® Windows • Tru64 UNIX® • Linux • NetWare • Sun Solaris • IBM AIX When adding a VLS virtual library to - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 39
or library devices listed. 6. Stop and disable the Removable Storage service in the Microsoft Computer Management applet. 7. Reconnect the Windows node to the SAN (plug all Fibre Channel cables back in). 8. Reboot. ◦ Windows using the HP LTO tape driver: Disable Windows Removable Storage Manager - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 40
there are many media servers. The VLS has an option to enable LUN masking in the device which is used to assign dedicated virtual libraries/drives on a VLS. LUN masking lets you restrict which hosts you want to be visible to particular virtual devices so that if a media server has any problem it - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 41
Tape Environment In the VLS firmware version 1.x/2.x, the LUN mapping mode is specific to each host. It lets you manually assign new LUN numbers to the virtual devices visible to the host, and hosts that are not LUN masked continue to use the default (shared device) LUN numbering. In the firmware - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 42
4 VLS Devices VLS Defined The HP VLS12000 Gateway, the VLS6000-series, the VLS9000-series, and the new VLS12200 and VLS9200 are RAID disk-based SAN backup devices. All three platforms emulate physical tape libraries, allowing you to perform disk-to-virtual tape (disk-to-disk) backups using your - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 43
solution uses disk storage to simulate a tape library. That is, a virtual library simulates libraries with tape drives and slots as if they were physical devices. Backup servers see the virtual libraries as physical libraries on the SAN. Because you can create many more virtual libraries and drives - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 44
better utilization of the tape drives/libraries you have. The benefits of specific VLS models: • Because the VLS12X00 is a Gateway to an EVA, it can take advantage of Instant Support Enterprise Edition - if a data pool fails, the "phone-home" service activates. • With VLS12X00 Gateway, VLS6600, and - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 45
Figure 17 Full VLS9000 System VLS Technical Specifications Table 6 VLS9200 Multi-node Maximum Capacity by Configuration with 40-port Connectivity Kit and 1 TB Drives (2:1 Compression, Non-deduplication) 1 array 2 arrays 3 arrays 4 arrays 5 arrays 6 arrays 7 arrays 8 arrays 1 node 80 TB 160 TB n/a - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 46
series Multi-node Maximum Capacity by Configuration with 32-port Connectivity Kit and 40 TB Arrays (2:1 Compression, Non-deduplication) 1 array 2 arrays 3 arrays 4 arrays 5 arrays 6 arrays 7 arrays 8 arrays 9 arrays 10 arrays 11 arrays 12 arrays 13 arrays 14 arrays 15 arrays 16 arrays 46 VLS Devices - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 47
values. • Assumes at least one capacity array per node. • 1MB = 1,000,000 bytes. with 2:1 compressible data 600 Mb/s 1200 Mb/s 1800 Mb/s 2400 Mb/s 3000 Mb/s 3600 Mb/s 4200 Mb/s 4800 Mb/s Table 12 VLS6000-series Technical Specifications Usable capacity (standard configuration, non-compressed - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 48
-series Technical Specifications (continued) VLS6218 Maximum usable capacity (standard 28.4 TB configuration, non-compressed) Maximum usable capacity (2:1 compression) 56.8 TB VLS6227 30.6 TB VLS6636 56.8 TB 61.2 TB 113.6 TB VLS6653 61.2 TB 122.4 TB Table 13 VLS6000-series Performance - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 49
EVA6x00 or EVA4400 1 Arrays (assumes 112 drives per array controller for EVA6x00 and 2 96 drives per array for EVA4400) 3 4 5 6 Number of EVA8x00 Arrays 1 (assumes 112 drives per array controller) 2 3 4 TB/hr 4.3 TB/hr 6.5 TB/hr 8.6 TB/hr 4.3 TB/hr 6.5 TB/hr 8.6 TB/hr VLS Defined 49 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 50
Table 16 VLS12000 EVA Gateway Technical Specifications Usable capacity for base (2-node) configuration Maximum usable capacity Number of virtual library nodes Number of virtual tape libraries per node Number of virtual tape drives per node VLS12000 EVA Gateway 50 TB 512 TB and 1 PB (with hardware - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 51
of 1 EVA3000 or EVA5000 Arrays 2 (assumes 56 drives per array 3 controller) 4 5 6 7 8 Number of 1 EVA4000 or EVA4100 2 Arrays(assumes 56 drives per 3 array controller) 4 5 6 Number /s 1200 MB/s 1800 MB/s 2400 MB/ 3000 MB/s 3600 MB/s 4000 MB/s 4000 MB/s VLS Defined 51 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 52
manual administration of which backups use which target, and as backups grow this also means switching backups VLS nodes present the virtual library with its virtual tape drives and the virtual cartridges are stored on the back-end array LUNs. The internal architecture of the VLS has every VLS - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 53
19 (page 53), and as the device is scaled up (by adding more nodes and arrays) the virtual library can be expanded with it by adding more drives and more cartridges to the existing virtual library. (This requires the robot to be initially created with additional spare empty drive bays and empty - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 54
and then new writes are dynamically assigned array LUNs as usual. When a new array is added to the VLS, the load balancing system will automatically start using this new storage on subsequent virtual cartridge writes (backups performed after the array was added will automatically load balance across - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 55
the previous virtual library configuration and licenses after a complete node0 replacement. This warm failover feature works as follows: • The VLS will automatically save, within 1 hour, the current configuration and licenses to a hidden virtual cartridge stored on the back-end disk arrays. • In the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 56
MSA20 array with 750/1000 GB drives). Enables an additional 10 TB VLS9X00 capacity per license. Enables an additional 2 TB (1 LUN) per license. Virtual Libraries/drives/cartridge Configuration The VLS provides a very flexible virtual library configuration, allowing you to create many more virtual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 57
HP recommends that you do not delete individual tape drives from inside the virtual library. Deleting drives in the virtual library introduces gaps in the LUN numbering for shared (unmapped) virtual tape drives, and many and masking to assign specific virtual drives to specific backup media servers, - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 58
storage ports 2 and 3 on each VLS node connect to different switches/fabrics or zones. The EVA controllers must also be connected to both switches/fabrics or zones. • VLS array controllers. To address these requirements: ◦ VLS software will automatically recognize the multiple paths to the disk array - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 59
the VLS traffic only when all other applications are inactive). For this reason, HP recommends using a dedicated EVA for the VLS12X00. Storage Pooling On the VLS12X00 and VLS9X00, physical disk capacity can be separated into storage pools. Virtual tapes can then be assigned to a specific storage - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 60
system, the VLS divides the three arrays into two storage pools - one storage pool spans across two arrays, and the other storage pool spans across one array. See Figure 23 (page 61). If a fourth array is added, the VLS automatically adds it to the storage pool with only one array. 60 VLS Devices - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 61
other pools. VLS Gateway Storage Pooling When creating and assigning storage pools, use the following information to ensure even load balancing: • Storage pools must be manually configured onto the array LUNs. • Limit the storage pools to 256 LUNs across the VLS device. • Keep arrays with the same - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 62
virtual tapes. For VLS models without hardware compression, it can also reduce data throughput by up to 50% on a VLS6000-series many hosts you need to have running to keep the VLS array performance). • An array at its maximum configuration will give full performance. • The number of disks on the array - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 63
drives efficiently. Example 2 Testing Backup to Tape vs. Backup to VLS In this example: • One virtual library (VLS 6105) has been configured with five drives • Servers 1 and 2 have LAN-attached data • Servers 3, 4, and 5 have shared storage resident on the MSA 1000 • The backup application is Data - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 64
(each array with 8 shelves full of disks) to meet that requirement. VLS Blueprints The following blueprints of VLS virtual tape libraries with deduplication and replication start from specifying company requirements, then defining the HP blueprint for the solution, and finally defining any solution - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 65
libraries and drives that can be emulated. Virtual media can be configured to any size. Backup application configuration highlights: The whole premise of VLS MB/sec with 8 nodes and 16 arrays • Simple to integrate into existing backup environment • Up to 16 libraries and 64 drives per node can be - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 66
is lost. But configuring multiple storage pools to overcome this means increased manageability overhead. ISVs: Data Protector, Netbackup, Networker, TSM, Commvault. See a full list at http:// www.hp.com/go/ebs. Device configuration highlights: Create as many virtual devices as you need and dedicate - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 67
objectives, reduce expenditure on ever increasing backup storage, better manage data growth for backup, provide more data online, reduced dependency on tape. Solution: VLS9000 with deduplication (licensable feature). Caveats: Needs specific data type support with ISV software. Best practices include - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 68
Other information: HP strongly recommends using the backup application to perform the copy from VLS to physical tape. Single application, master server data can be recovered to the new servers. • A replacement VLS and servers can be installed at the primary site and data can be reverse replicated - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 69
reduced fixed costs (link costs). Copy to physical tape at disaster recovery site for archiving and further disaster recovery options. Solution: VLS with deduplication and many-to-one replication. Caveats: Allow 24 hours for replication. Scripting may be required on target site for trickle import of - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 70
imported to new servers and arrays using physical tape at the primary site. Tape could also be copied to the VLS and then recovered from there. currently supported. • A one-time initialization process is required the first time replication runs so the source and target can synchronize. For many-to- - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 71
loading at backup time. ISVs: HP Data Protector, Netbackup and TSM only at this time (VLS supported deduplication ISVs). Device configuration highlights: Configure VLS with dedicated library for VMWare machines, do not multiplex backups, use separate virtual drives for each VMWare machine and - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 72
storage to the proxy server for these types of backup. ISVs: HP Data Protector and Netbackup only at this time. (Tested by HP enterprise backup solutions lab in depth.) Device configuration highlights: Separate virtual library hence can accommodate snapshots with all array types. 72 VLS Devices - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 73
to do a complete disaster recovery. For example, HP Data Protector on Proxy can restore directly from VLS or tape onto VM machines. For Windows OS, server • Allows all HP supported Fibre Channel backup devices to be connected to Proxy server • VCB is disk array independent snapshot technology • - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 74
, Exchange and Oracle. Caveats: Limited to arrays that support DP ZDB IR - XP, EVA and LHN (future). ISVs: HP Data Protector and Symantec Netbackup only at this time fully tested by HP. Device configuration highlights: Configure different virtual libraries for SQL, Exchange, Oracle snapshot backups - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 75
Figure 32 Using VLS in Larger VMWare Environments with HP Data Protector ZDB IR Backup Recovery options: • Two step Solution advantages: • VCB snapshot-based backup is not really "application aware" whereas HP Data Protector ZDB quiesces the application prior to the hardware-based snapshot. It is - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 76
low bandwidth replication on HP VLS devices. Large Enterprise Cross library for high volume archiving. Caveats: CWDM bandwidth is the critical performance factor in this solution typically using HP Multi-Protocol Routers. ISVs: HP Data Protector, Symantec Netbackup and TSM (deduplication support - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 77
technology at the right price for the right location. Solution: HP D2D in remote offices and regional data centers. VLS in regional data centers slot mappings per D2D virtual library is possible at regional data center. VLS at regional data center should have one library dedicated to accepting - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 78
to new servers and arrays using physical tape at the primary site. Tape could also be copied to the VLS and then recovered from there . Solution advantages: • High Data availability solution, data always held in three locations and on tape • Total Solution under HP - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 79
automigration feature allows the VLS to act as a tape copy engine that transfers data from virtual cartridges on disk to a physical tape library connected to the VLS device. Echo copy is the supported VLS automigration scheme. NOTE: When using automigration, virtual cartridge sizes are limited to - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 80
virtual media is ejected, the matching destination tapes are also automatically ejected. If a destination tape is ejected while a copy is pending, notifications in the VLS The automigration policy defines the following for each source virtual library: • Retention days - the number of days information - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 81
a destination library or libraries to the VLS. Once connected, the destination library must be managed, or added as a destination for automigration virtual cartridges. After managing the destination library, the user establishes the automigration policy for each virtual library. See Automigration - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 82
VLS. 3. During the echo copy window, automigration creates physical copies of the virtual cartridges. 4. The echo copy window ends. One of the following methods is used to eject the physical tapes: • The backup application. • The automigration tab in the GUI. • The library front panel GUI. • Manual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 83
sections give examples of backup and restore use cases for automigration. Backup to Non-shared Virtual Libraries In this use case, the customer has multiple virtual libraries on the VLS device, and each virtual library is mapped to a different backup server. In other words, there is no SAN-sharing - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 84
has multiple backup hosts on the SAN fabric that are sharing a single virtual library on the VLS device. This is the normal configuration for the majority of enterprise customers. Even though this shared library configuration allows tape copying via the backup application, some customers still wish - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 85
the firesafe (for example, if the policy-defined retention period has not expired), use Command View VLS to manually move the cartridge back into the virtual library. You can then restore from the virtual cartridge using the backup application, and then move the cartridge back to the firesafe. 2. If - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 86
NOTE: Customers may choose to configure their devices such that there are additional, unmapped slots in the virtual library. These additional virtual slots can be used for backups so that even if the physical slots are all full, there are still spare slots available to hold the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 87
6 Accelerated Deduplication HP Accelerated deduplication technology is designed for optimal performance and scalability . However, the multi-node VLS still maintains the manageability of a single device. • Provides maximum hardware efficiency because the virtual cartridge file system was designed to - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 88
Figure 40 Steps of Accelerated deduplication 1. On-the-fly backup analysis Figure 41 (page 89) illustrates the steps in the first phase of Accelerated deduplication. Although Accelerated deduplication uses post-processing technology, backups are analyzed initially while the backup is running. This - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 89
Figure 41 Backup Analysis Item Description 1 The VLS analyzes the backup as it goes through memory. 2 is triggered when a tape is unloaded either inside a drive, or when it is ejected to a library slot. This phase only occurs if backups are complete. The on-the-fly backup analysis has already been - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 90
d. the type of backup - full or incremental e. the type of data in the backup - files, database, etc. The deduplication software then queries the metadata database to find an equivalent older version of the same backup job to compare it against the new backup. If the current backup is full, it will - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 91
• Configure the available deduplication options using Command View VLS A complete backup is necessary to initialize Accelerated deduplication, but data in subsequent sessions can then be deduplicated. See the HP Virtual Library System user guide for your system for the complete setup procedures - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 92
for more information on backup applications and operating system types supported with HP Accelerated deduplication. Licensing Accelerated deduplication is a licensed feature. Licenses are based on the physical disk capacity of the VLS device. You must install enough deduplication licenses for all - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 93
deduplication by backup job type or individual backup job. • Switch from backup to File-level differencing for file server backup jobs services in the VLS when the device reaches 98% full disk capacity. Tthis ensures that there is no loss of data access when the storage capacity is full. The VLS - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 94
you can reformat/erase to create free storage. For example, first reformat/erase cartridges specific backup application, see VLS Configuration and Backup Application Guidelines. Performance Because the various phases of deduplication may be distributed among nodes, you must determine how many - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 95
HP website: http://www.hp.com/go/storageworks/sizer. Optimum Record Sizing You must configure your backup application to use a record size (tape block size) of 256 KB when using deduplication. Optimizing File Server Deduplication There are many files, the VLS will automatically switch itself to use - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 96
HP recommends using standard, appending shared media pools across multiple tapes. By doing so, tapes fill with backup jobs from different hosts, which allows deduplication to occur and storage to be reclaimed. You should not use non-appending media pools. • Virtual (Spanning too many tapes reduces - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 97
virtual cluster name). Disabling Deduplication on Specific Backup Policies To improve deduplication performance, you can disable deduplication in Command View VLS for specific should not be mixed with database full backups. HP recommends configuring database log file and incremental backups to - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 98
to meet the needs of enterprise data centers: • On a multi-node VLS device the replication is also multi-node capable and thus can scale as the space reclamation on the target device. How it Works The HP VLS Accelerated deduplication is the key technology enabler for replication. Understand where - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 99
addition to the unique data transmitted, there is some overhead of data instructions that also needs to pass across the replication link. This is known incrementals. With the current capacity-optimized comparison algorithms in the HP VLS, the amount of data replicated for file system incrementals is - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 100
node. VLS Replication Implementation You must perform the following to implement replication on VLS systems. Licensing On HP VLS devices, the passive target device. In many-to-one deployment, you would install one license per node on the one target device (this then supports up to ten source devices - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 101
(for all nodes in those devices). Replication Setup After preparing your source and destination VLS devices (see "Replication Preparation" (page 133)), use the following steps to configure replication. See your VLS user guide for details. Figure 47 (page 101) shows an overview of the steps outlined - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 102
1. Create a replication target on the target device. On the target device, set up "Global LAN/WAN Target Settings" and then "Create a "LAN/WAN Target" with: • Name • Start and end slots • Maximum simultaneous transfers • Password • Target replication start window • Target replication duration window - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 103
link the source device to target device). On the source device, use "Manage LAN/WAN Library" and the relevant password to link the source and target devices together in a replication pair. You can see the target VLS, slots, and copy pools on the target from the source. Note that the slots in - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 104
virtual library and the target library. The barcodes created initially on the target device are now also "echoed" in the source virtual library VLS shared between two different backup applications of which one of them is not currently supported run during specific hours of the day on specific days, - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 105
ensure your backup application is configured to use the virtual cartridge media in the source device's echo copy pool. Any backups that go to virtual cartridges on the source device that are not in initialization • WAN initialization • Co-location initialization VLS Replication Implementation 105 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 106
enterprise backup environments the initial backups can be quite large (many TB), in most cases it will be impractical to perform HP Fibre Channel-attached tape library (MSL, EML, ESL-E) into the storage ports of the VLS device. (For a VLS9000 this would plug into the internal Fibre Channel switches - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 107
VLS and referenced using the catalog that was sent via the WAN. You must plug an HP Fibre Channel-attached tape library into the storage ports of the target device and add it as a "SAN Destination Library library to use for the import and then instruct which tapes to load into this library the switch - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 108
together by plugging both source and target device external LAN ports into the same external LAN switch. Then backup to the source VLS and replicate to the target VLS using the high speed GbE links at the co-location. This allows high volumes of data to be initialized in a faster time. To implement - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 109
VLS already installed at different sites, WAN transfer is best for small quantities of data and tape transfer for larger quantities of data. Again, for many address. Continuing Role for Physical Tape HP has insisted all along that virtual tape libraries and physical tape are not mutually exclusive - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 110
Libraries" in the source device GUI. If the replication connection is offline this can be because: • The target device is "Unreachable" (network problem, target device failure, you manually to search for a specific set of cartridges based on is when the source virtual cartridge is being initially - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 111
supported by deduplication.) Virtual cartridges that have been pre-formatted by the backup application (such as HP manually override the replication window. • Mirror Scheduled. When the replication window starts, the modified source virtual cartridge is queued up for processing. If a source virtual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 112
the "Last Successful Echo Copy" date/time to determine which target virtual cartridges are safe to restore from. Replication Job Status On both indicators to monitor the actual replication transfer) and you can also manually cancel any active jobs using the "Cancel" buttons. Replication Job History - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 113
many jobs failed. For the incoming target jobs, the summary is shown for each source device. The job summary provides a quick and easy overview of the replication activity on a VLS replication traffic to specific hours of the went to the cartridge set or virtual library mapped to the echo copy - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 114
maximum of 7 concurrent replication jobs per node). • There is a hardware limit of seven concurrent replication jobs per VLS node, so if you have multiple replication targets on a VLS (such as many-to-one deployment) you need to ensure that you do not exceed the hardware limit when you configure the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 115
size of the replication link will depend on your usage model for replication. NOTE: For the volumes of data to replicate with HP VLS systems, HP recommends a dedicated replication link wherever possible. • Backup and replication can take place in a fixed window (up to 12 hours) preferably when the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 116
the replication instructions to be generated before new data can replicate. This means there is probably a stronger need for a dedicated link and the full utilization of that link in order to get the backup deduplication and replication completed within an acceptable service level agreement. HP also - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 117
24 hours without impacting application performance using the same WAN link. 2. Sizing Scenario: 66 TB of database and file-system replication. Figure 53 VLS Sizing Example 2 • Database Full Backup size 50TB - 1% change rate • File System Full backup Size 16.6 TB - This example replicates one of the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 118
(even allowing four hours for the first set of deduplication replication instructions to be generated, so it is easy to achieve the requirement 3. Sizing Scenario: 266 TB of database and file-system replication. Figure 54 VLS Sizing Example 3 • Database Full Backup size 200TB - 1% change rate • - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 119
fixed dedicated link speed of 400 Mbit/sec At greater than 1 Gb/sec+ at high volumes add extra link bandwidth for catch-up 4. Sizing Scenario: Many-to-one (4:1) replication. Figure 55 VLS Sizing Example 4 Design Considerations 119 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 120
array VLS9000 as the source device and you are replicating all of its cartridges, you need a 4-node/4-array target device. • With a many VLS appliance that was protecting it. NOTE: The VLS does not support etc., are stored there. With VLS the virtual library containing the replication target (on the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 121
backup application database. You can do this manually at the time of the disaster recovery, or backups on the source site), you need to switch the backup application to "see" the target device the LUN Mapping feature in the VLS to hide the target virtual library from the backup application. But in - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 122
Figure 57 Data Recovery from the Target VLS 1. The source VLS becomes inaccessible to the remote VLS and to the backup host. 2. The source tape library and drive are deleted from the backup host to import/restore from the source device's virtual library to replacement servers. 122 Replication - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 123
VLS GUI) you can perform a "Restore Configuration" in the VLS GUI (loading in a previous saved configuration). Alternatively you can manually recreate the original virtual library the target VLS. 5. On the source VLS: If using a many-to-one configuration, repeat Step 4 on all source VLS devices. If - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 124
VLS: Follow the normal instructions for performing tape initialization. 10. On the source VLS: In a many-to-one configuration, repeat Step 7 through Step 9 on each source VLS source virtual library to their physical library (via the backup application media servers). However, if the physical library - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 125
of the ISV Import email from the VLS, which lists the virtual cartridges that were successfully replicated into replication targets since the last report. The attachment format is: ISV~~~ Email body example: Email - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 126
See "Data Protector Import Example Script" (page 138) and "NetBackup Import Example Script" (page 141) for sample import scripts. • On the target VLS device GUI, setup the SMTP Gateway address and then configure the "ISV Import" email report using the selected email account. 126 Replication - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 127
. During the automigration window you defined, source virtual cartridges automatically migrate to matching virtual cartridges on the destination VLS. The VLS with the source library must support automigration; however, it is not necessary for the destination VLS to do so. If you have an earlier - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 128
critical data, thus conserving bandwidth, is advantageous. It is fully supported to have a mixture of standard and automigration tapes in the same virtual library at the same time. Replicating a subset of backup data to a remote VLS also provides customers with the flexibility and simplicity of not - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 129
server with only one media server controlling the robotics. • FC HBA Firmware/Drivers Verify that all SAN switches are supported by the VLS and have current firmware. Verify your configuration with the EBS Matrix available at http://www.hp.com/go/ebs. • Disable FC HBA Target Reset For FC HBAs in - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 130
on separating cartridges across virtual libraries, or decreasing the impact of array failure. See "Storage Pooling" (page 59). • For each virtual library, decide if a high availability design is needed. Always use dual path for a virtual library changer if the backup application supports this (dual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 131
by the virtual cartridge sizes. ◦ If this virtual library will be a replication target, it must contain at least as many slots VLS. Additional guidelines are available in the HP backup application implementation guides at http:// www.hp.com/go/ebs detailing: • HP Data Protector • IBM Tivoli Storage - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 132
3.4.0 if there are multiple storage pools configured. • VLS6000, VLS9000, and VLS12000 nodes will need to be upgraded to firmware version 3.4.0 or higher. (VLS9200 and VLS12200 nodes are already fully deduplication-ready.) The HP StorageWorks Virtual Library System Firmware Version 3.4.0 Release - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 133
subsequent sessions can then be deduplicated. See the HP Virtual Library System user guide for your system for complete setup procedures. See VLS to allow optimization of file server deduplication (see "Optimizing File Server Deduplication" (page 95)) or handling backup application-specific - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 134
• Manually create matching virtual cartridges (with the same barcodes, cartridge sizes, and cartridge type) in the target virtual library that prepare the TCP/IP network connection between the source and target devices. In VLS devices, the node0 will already have a TCP/IP address assigned to its - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 135
of 5570 (which you can modify on the target). After preparing your source and destination VLS devices, following the steps outlined in "Replication Setup" (page 101) to configure replication. HP Data Protector This section includes both general and deduplication guidelines as well as other useful - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 136
cell (as supported) can connect to VLS deduplication because it does not consistently fill tapes. • Disable multiplexing: set the concurrency to 1 (default is set in the Drive Properties, and can also be set in the backup specifications), because multiplexing is not recommended for virtual libraries - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 137
before it starts overwriting expired/scratch cartridges; creating too many virtual cartridges results in the device disk capacity filling up. • Interactive backups will not deduplicate: If you edit a Data Protector backup specification and then manually run it from the GUI without saving it, the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 138
for HP Data Protector. The input to the script is the ISV Import email report (containing a list of cartridges by /barcode/library/slot that ) and has CLI access to the Data Protector CLI. The virtual library on the VLS target device has been presented to Data Protector over Fibre Channel and - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 139
add error handling or support for multiple libraries, etc. Symantec NetBackup storage device, the administrator must define storage units using the Device Configuration Wizard. For virtual library devices such as VLS, the type of storage unit used is the "Media Manager storage unit." (Even though VLS - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 140
emulation in all HP VLS products for device support purposes. • Barcode formats: When configuring the barcode formats for the virtual cartridges, do not exceed eight characters. • Disable multiplexing: Even though multiplexing is supported, HP does not recommend it for virtual libraries because of - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 141
) and has CLI access to the NetBackup CLI. The virtual library on the VLS target device has been presented to NetBackup over Fibre Channel and configured in NetBackup shows an overview of TSM (Tivoli Storage Manager) LAN-based backups that incorporate virtual libraries. The steps are described below. IBM TSM 141 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 142
primary tape pool. Unscheduled Migrations Undersized disk storage pools; a common mistake is to to the primary tape storage pool on a tape library. This migration is an the primary tape storage pool with a virtual library, you can virtual libraries to improve backup performance and reduce LAN load. The - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 143
Solution with Tivoli Storage Manager implementation guide for details on how to configure the device drivers for HP libraries and drives, including how to set the library element numbers, install the appropriate "tsmscsi" drivers, etc. The "HP VLS" library emulation is only supported in TSM version - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 144
IBM Tivoli Storage Manager Performance Tuning Guide, available on the IBM support web site backup to tape/virtual tape only. following guidelines apply to a VLS with deduplication enabled. All eliminates the need for the TSM administrator to manually relabel scratch cartridges to reclaim space. • - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 145
does not currently support backing up to one VLS and then copying from that VLS to another VLS. Deduplication is performed on the first VLS but not the second. This limitation is removed in firmware version 6.0 and higher. ◦ Copying data from a disk storage pool to a VLS. This requires the - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 146
treats the target server like a tape library, and the target server treats the source server as a special type of client node. Deduplication does not support TSM virtual volumes. Firmware Version 3.4 • Incremental forever: The TSM (Tivoli Storage Manager) "incremental forever" scheme of backups - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 147
To simplify configuration, define a specific management class for TSM image backups and configure that class in the VLS GUI for a backup-level deduplication TSM environment and help with sizing the virtual library: • This select statement will list all primary storage pools that are not DISK and show - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 148
should be turned off for a virtual library: Query storagepool f=d EMC NetWorker This services to back up and recover data for the NetWorker client computers in a datazone. • NetWorker storage node: a NetWorker storage storage nodes are also NetWorker clients. 148 VLS Configuration and Backup Application - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 149
supported, HP does not recommend it for virtual libraries because the performance impact on restores and deduplication. Because you can create additional drives easily in the virtual library and allocate them to Storage Test Unit Ready (TUR) for any tape drivers in use. A SCSI TUR command may rewind - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 150
library SCSI commands via activation of a Common Device Interface (CDI) with the HPUX 11.31. Operating CDI is activated by default in EMC NetWorker. When CDI is activated, HPUX estape driver has a problem virtual cartridges are used, so in this case HP recommends either removing unneeded virtual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 151
where the RMAN script provides specific information concerning the files comprising 8. The net result of this setting will determine how many data files are simultaneously multiplexed by Oracle into each backup set backup set. To avoid problems finding matching backups, the number of channels should not - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 152
Oracle deduplication you can customize your RMAN scripts to add the additional FORMAT information with specific syntax. You must also configure the RMAN script to back up one file per backup the RMAN script to back up one file per backup set. 152 VLS Configuration and Backup Application Guidelines - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 153
The deduplication-optimized RMAN settings: FORMAT 'df.%d.%f.' for each data file FILESPERSET 1 MAXOPENFILES default Number of channels does not impact deduplication performance, but does impact backup performance so consider increasing the number of channels while maintaining - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 154
10 Support and Other Resources Related Information Documents • HP 9000-series Virtual Library System User Guide • HP 9200 Virtual Library System User Guide • HP 12000 Gateway Virtual Library System User Guide • HP 12200 Gateway Virtual Library System User Guide • HP StorageWorks 6000-series Virtual - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 155
to this service provides you with e-mail updates on the latest product enhancements, newest driver versions, and firmware documentation updates as well as instant access to numerous other product resources. After subscribing, locate your products by selecting Business support and then Storage under - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 156
symbols may be found on hardware to which this guide pertains. They have the following meanings: WARNING! These electrical shock hazards. The enclosed area contains no operator serviceable parts. WARNING: To reduce the risk of injury manually handling material. 156 Support and Other Resources - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 157
storage used by a given data block. Network attached storage. Automigration between two VLS devices via LAN/WAN. See also automigration. Storage area network. The HP Virtual Library System product line. Virtual tape library. Wide area network. Write once, read many. A characteristic of data storage - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 158
retention planning, 30 single library see single library backup single vs. multiple library, 26 speed considerations, 26 transfer size, 30 backup technologies, 10 backup-level differencing, 90 business copy alternative to virtual tape, 13 C capacity see storage capacity conventions text symbols, 156 - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 159
TSM with HP Accelerated deduplication, 141 with HP virtual libraries, 141 integrity check, 91 L LAN-free backups, 30 Library and Tape Tools see HP Library and Tape Tools licensing Accelerated deduplication, 92 capacity on the VLS, 55 VLS replication, 100 LUN mapping, 40 LUN masking, 40 M many-to-one - HP 12000 | HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 160
deduplication, 139 with HP virtual libraries, 139 symbols in text, 156 symbols on equipment, 156 T tape see physical tape tape oversubscription, 16 technical specifications VLS12000, 50, 51, 52 VLS12200, 49 VLS6000-series, 48 VLS9000-series, 46, 47 VLS9200, 45, 46 technical support, 155 text symbols
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HP VLS Solutions Guide
Design Guidelines for Virtual Library Systems with
Deduplication and Replication
Abstract
This document describes the HP Virtual Library System and its concepts including automigration, deduplication, and replication,
to help you define and implement your virtual tape library system. It includes best practices for working with specific backup
applications. This document is intended for use by system administrators who are experienced with setting up and managing
system backups over a SAN.
**AG306-96032**
HP Part Number: AG306-96032
Published: June 2011
Edition: Ninth