HP StoreOnce D2D2504i HP StoreOnce Backup System Concepts and Configuration Gu
HP StoreOnce D2D2504i Manual
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- HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 1
housekeeping operations competing for resources. The information in this guide is valid for both single-node and multi-node G3 StoreOnce Backup systems, running software version 3.6.0 and later. IMPORTANT: Always check http://www.hp.com/support/manuals for the most up-to-date documentation for your - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 2
system. Revision 2 May 2012 This is the second edition, issued with the 3.3.x version of HP StoreOnce software. Revision 3 May 2013 This is the third edition, issued with the 3.6.0 version of HP StoreOnce software. It has been expanded to include information about new models and also now - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 3
configuration for CIFS AD 33 Option 1: HP StoreOnce Backup system on Corporate SAN and Network SAN 34 Option 2: HP StoreOnce Backup system on Network SAN only with Gateway 35 5 Network configuration in multi-node StoreOnce Backup systems 36 What is currently supported...36 What is not currently - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 4
fabric...42 Direct Attach (private loop 44 Zoning...44 Use soft zoning for high availability 45 Diagnostic Fibre Channel devices 46 7 Configuring FC to support failover in a StoreOnce B6200 Backup system environment 47 Autonomic failover...47 What happens during autonomic failover 47 Failover - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 5
in more detail 89 Seeding over a WAN link...89 Co-location (seed over LAN)...92 Floating StoreOnce seeding...94 Seeding using physical tape or portable disk drive 95 13 Implementing replication with the HP B6200 Backup system 98 Active/Passive and Active/Active configurations 98 Many to One - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 6
parameters 115 StoreOnce B6200 Backup...115 StoreOnce 2700, 4500 and 4700 Backup 116 StoreOnce 2610/2620, 4210/4220 and 4420/4430 Backup 117 About this guide 120 Intended audience...120 Related documentation...120 Document conventions and symbols 120 HP technical support...121 HP websites...121 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 7
HP StoreOnce Backup system models The information in this guide relates to all G3 HP StoreOnce Backup system models. (G3 means that the systems are running StoreOnce per node) Table 2 StoreOnce 2700/ 4500, 4700 Product model Description Interfaces supported HP StoreOnce 2700 A single server with - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 8
, BB904A Storage expansion Not supported One 12-disk expansion shelf One 12-disk expansion shelf One 12-disk expansion shelf Up to three 12-disk expansion shelves NOTE: There are other legacy HP StoreOnce products, running StoreOnce software 2.x.x and 1.x.x. This guide should not be used with - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 9
may be created as backup targets for both Windows and UNIX/Linux hosts, and may be used with most backup applications that support backup to disk. NAS targets on an HP StoreOnce Backup System provide network file share access that is optimized for backup to disk. They should not be used for general - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 10
) Uses virtual tape drives and virtual slots to emulate physical tape libraries Enterprise FC SAN environment (some models do not support FC). HP StoreOnce also supports iSCSI VTL (not B6200) Tried and tested, well understood with traditional backup applications Uses Robot and Drives device type - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 11
FC 2 x 8GB FC 2 x 8GB FC 2 x 8GB FC Licensing Licensing requirements The HP StoreOnce Backup system has the following licensing requirements: • Each storage shelf arrives with a license that must applied from the StoreOnce CLI. See the HP StoreOnce CLI User Guide for more information. Licensing 11 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 12
HP StoreOnce backup system Installation and Configuration guide and the HP StoreOnce Backup system CLI Reference Guide. Security Features The HP StoreOnce to restore your keystore. Installing the additional couplet is an HP Support task, but you are responsible for ensuring that a Security license - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 13
guide, but it also contains a worked examples for sizing a VTL, NAS and StoreOnce Catalyst solution and implementing StoreOnce Catalyst with supported backup applications. You can find these documents from the Manuals page of the HP Business Support Center website: http://www.hp.com/support/manuals - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 14
understand factors that may impact performance of the overall system and to ensure optimal performance of your backup solution. Data deduplication HP StoreOnce Technology is an "inline" data deduplication process. It uses hash-based chunking technology, which analyzes incoming backup data in "chunks - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 15
replication blackout windows to prevent bandwidth hogging. The maximum number of concurrent replication jobs supported by source and target StoreOnce appliances can be varied in the StoreOnce Management GUI to also manage throughput and bandwidth utilization. Catalyst Copy and deduplication Catalyst - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 16
the individual hosts could not supply data fast enough. But multiplexing is not required and is in fact a BAD practice if used with HP StoreOnce StoreOnce deduplication devices. Multi-stream or multiplex, what do they mean? Multi-streaming is often confused with Multiplexing; these are however two - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 17
ratios. Figure 1 Multiplexing produces slow performance and poor dedupe ratios Instead of multiplexing data into a single stream and sending it to the HP StoreOnce Backup system, you should re-specify the multiplexed backup job to be either a single backup job using multiple devices or multiple jobs - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 18
. Along the Y axis is the overall throughput in MB/sec that the StoreOnce device can process - this ultimately dictates the backup window. As a backup calculated using "Infinite performance hosts" to characterize the HP StoreOnce ingest performance. As long as we can supply around 24 data streams - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 19
do not reach the maximum throughput of the node (server), which can support 600MB/sec in this example. This is the maximum possible ingest rate of some high performance hosts that can supply data at a rate higher than the StoreOnce maximum ingest rate; and so the performance is capped at 1000 MB/sec - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 20
close to the maximum ingest rate. The maximum ingest rates vary according to each StoreOnce model. Typically, on the larger StoreOnce units about 48 streams spread across the configured devices give the best throughput; more we reach 48 streams or more. So, for 100 streams 20 HP StoreOnce technology - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 21
, if efficient deduplication and optimum performance are required: • Ensure that there is no encryption of data before it is sent to the StoreOnce appliance. • Ensure that software compression is turned off within the backup application. Not all data sources will result in high deduplication ratios - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 22
described in more detail in the relevant chapters of this guide. This chapter describes basic concepts only. The HP StoreOnce B6200 Backup system The Enterprise StoreOnce B6200 Backup System is a deduplication backup appliance supporting Catalyst, VTL and NAS target devices, which provides scale-up - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 23
the HP StoreOnce B6200 Backup System n=4. This means that a 4-couplet, 8-node configuration is the largest permitted configuration. • Failover: This occurs within a couplet. Service sets for VTL/NAS/Replication will run on the remaining node in the couplet. • Failback: This is a manual process to - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 24
service sets are running on Node1, but backup and replication performance will be reduced. The Management Console that was active on Node 2 has moved to Node 3, Couplet 2. This is not significant; the Management Console becomes active on the first node to respond. 24 Concepts specific to StoreOnce - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 25
and MUST be connected to a Fibre Channel switch; direct FC Connect is not supported. The switch MUST support NPIV for the FC failover process to work. See Configuring FC to support failover with the HP StoreOnce B6200 Backup system (page 47) for more details. The following diagram illustrates - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 26
Figure 9 HP B6200 Backup system, customer connections 26 Concepts specific to StoreOnce B6200 Backup system - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 27
ports, and also backup servers and network infrastructure to maximize available bandwidth to the StoreOnce device. Supported Ethernet configurations The HP StoreOnce Backup system supports a wide range of network configurations. The following list summarizes configuration details. • An Ethernet - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 28
modes are supported: • Mode guide. This section explains network configurations for the following single-node Backup systems, which are installed and configured by the customer: • HP StoreOnce 2700 • HP StoreOnce 4500 • HP StoreOnce 4700 • HP StoreOnce 2620 • HP StoreOnce 4210/4220 • HP StoreOnce - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 29
systems is performed via the CLI Management interface. For detailed information about configuring network bonding modes, please refer to the HP StoreOnce 2620, 4210/4220 and 4420/4430 Backup system Installation and Configuration guide. Network configuration in single-node StoreOnce Backup systems 29 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 30
Single port configurations The example shows the simplest configuration of a single subnet containing just one 1GbE network port, generally this configuration is likely to be used: • Only if the network interface is required only for management of the appliance or • Only if low performance and - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 31
for business network traffic and another for data backup. In this case, one port on the appliance can be used solely for access to the StoreOnce Management Interface with the other used for data transfer. Figure 11 Network configuration, dual port mode In the case of a separate network SAN being - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 32
Bonded port configurations (recommended) If two network ports are configured within the same subnet they will be presented on a single IP address and will be bonded using one of the bonding modes as described in Network bonding modes. This configuration is generally recommended for backup data - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 33
requires careful consideration, see the next section for more information. Network configuration for CIFS AD When using CIFS shares for backup on a StoreOnce device in a Microsoft Active Directory environment the appliance CIFS server may be made a member of the AD Domain so that Active Directory - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 34
performance can be maintained - see below. The backup application media server also needs network connections into both the Corporate LAN and Network SAN. Figure 14 HP StoreOnce Backup system on Corporate SAN and Network SAN 34 Networking considerations - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 35
data transfer but also allows authentication with the Active Directory Domain controller. The illustration shows a simple Class C network for a medium-sized LAN configuration. Figure 15 HP StoreOnce Backup system on Network SAN only with Gateway Network configuration in single-node - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 36
to ensure support for autonomic failover. Installation and configuration of these systems is normally carried out by HP service specialists. Before installation the customer is asked to read the HP StoreOnce B6000 Series Backup system Installation Planning and Preparation Guide and complete - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 37
CLI): • No external gateways: If the customer wants to use the HP StoreOnce B6200 Backup System in a totally isolated network environment, they should not configure an external gateway (the HP support engineer will simply skip this step during configuration) • One external gateway: This is the - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 38
, should not be removed Template 2, uses 1GbE network only Template 2 supports users who have a 1GbE network only. The same network is used customers who do not have a sufficient number of physical Ethernet ports to support Template 2 should use Template 5 instead. Figure 17 Template 2 cabling to - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 39
2 blue cables bonded 10 GbE ports to customer's data and management network internal cabling, should not be removed Template 4, uses two 1GbE networks Template 4 supports users who have two 1GbE networks. One 1 GbE network is used for data; the other is used for management. The gateway must be in - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 40
: Template 5 supports users who want to have only two 1GbE network connections from each node in a couplet to their Ethernet switches. The same network is used for data and management. It is primarily for customers who only use VTL as their backup targets and do not use StoreOnce Catalyst stores or - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 41
B6200 Backup system has specific FC considerations to ensure support for autonomic failover. This chapter contains generic information about FC support. See also Configuring FC to support failover with the HP StoreOnce B6200 Backup system (page 47). • Virtual library devices are assigned to - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 42
). Additional configuration requirements apply with the HP StoreOnce B6200 Backup system to support autonomic failover. For examples that illustrate multi node products (HP StoreOnce B6200) see Configuring FC to support failover with the HP StoreOnce B6200 Backup system. Switched fabric A switched - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 43
The illustration above shows the flexibility of the configuration • VTL1 is connected to FC Port 1 exclusively • VTL3 is connected to FC Port 2 exclusively • VTL2 is spread across FC Port 1 and FC Port 2. The medium changer is connected to both ports whereas the drives by default are connected 50% - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 44
directly to a Host Bus Adapter (HBA). In this configuration the Fibre Channel private loop protocol must be used. NOTE: The HP StoreOnce B6200 Backup system is not supported in direct attach configurations. Figure 22 Fibre Channel, direct attach (private loop) topology Either of the FC ports on - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 45
the device discovery process. • Disk and tape on the same pair of HBAs is supported along with the coexistence of array multipath software (no multipath to tape or library devices on the HP StoreOnce Backup system, but coexistence of the multipath software and tape devices). • Large fabric (128 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 46
is a Diagnostic Fibre Channel Device presented to the Fabric. There will be one per active FC physical port. This means there are two per HP StoreOnce Backup system or node that has two Fibre Channel ports. The Diagnostic Fibre Channel Device can be identified by the following example text (taken - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 47
support failover in a StoreOnce B6200 Backup system environment Autonomic failover Autonomic failover is a unique enterprise class feature of the HP B6200 StoreOnce without manual intervention. • NAS target failover is via the Virtual IP system used in the HP B6200 Backup System - the service set - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 48
failover occurs, the virtual tape libraries and the NAS shares on the HP B6200 Backup System go offline and after a period of time they come manual process and restore jobs are typically not automatically retried because they are rarely scheduled. 48 Configuring FC to support failover in a StoreOnce - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 49
also considered as a virtual device within a service set and replication fails over as well as backup • Failback (via CLI or GUI) is a manual process and should be scheduled to occur during a period switches used with HP StoreOnce must support NPIV. For a full list see: nl http://www.hp.com/go/ebs. - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 50
a maximum of 255 WWNs per port, the HP B6200 Backup System applies a maximum of 120 WWNs any of the selected configurations, the WWNs associated with its service set will not exceed 120 and can be failed over guide. 50 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 51
Figure 25 VTL FC example port configurations Fibre channel port presentations 51 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 52
• Zoning by WWPN • Each zone to include a host and the required targets on the HP B6200 Backup System • Equivalent ports from each node can see the same switch B6200 VTL configuration , recommended configuration 52 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 53
• All hosts can see the robots over two separate switches • Zoning by WWPN • Each zone to include a host and the required targets on the HP B6200 Backup system • Equivalent ports on each node see different switches B6200 VTL configuration • B6200 failover nodes will not failover if we lose a FC port - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 54
• Zoning by WWPN • Each zone to include a host and the required targets on the HP B6200 Backup system • Equivalent ports from each node can see the same fabric, but are directed fabrics, recommended configuration 54 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 55
1 fails in the previous configuration, all VTL libraries and nodes on the HP B6200 Backup System still have access to Fabric 2. As long as Hosts 1 fails Similarly, if Fabric 2 failed, all VTL libraries and nodes on the HP B6200 Backup System would still have access to Fabric 1. As long as Hosts D, - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 56
fabric • Zoning by WWPN • Each zone to include a host and the required targets on the HP B6200 Backup system • Equivalent ports from each node are connected to the same fabric, but are directed port, switch or fabric 56 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 57
Figure 31 Complex configuration with ports of different VTLs being presented to different fabrics, not advised Scenario 4, dual fabric with dual switches, not advised 57 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 58
, compression levels, number of data streams, number of devices and number of concurrent tasks, such as housekeeping or replication. All HP StoreOnce Backup systems can support Catalyst stores, Virtual Tape libraries and NAS (CIFS/NFS) shares on the same system, which makes them ideal for customers - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 59
appliance and within the backup software because of the advanced functionality it delivers. • HP StoreOnce is only supported on HP Data Protector 7.01, Symantec NetBackup 7.x and Symantec Backup Exec 2012. StoreOnce interfaces with StoreOnce Catalyst The following diagram shows the basic concept of - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 60
the data held in Catalyst stores, solves many of the problems involved in Disaster Recovery scenarios involving replicated copies. No import . • With the Catalyst Agents running on remote office media servers HP StoreOnce Catalyst technology has the ability to back up directly from remote sites - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 61
For this reason, best practices are dependent upon the backup application. See the separate document, HP StoreOnce Backup system Best Practices for VTL, NAS, StoreOnce Catalyst and Replication Implementations with sizing and application configuration examples for more details. Generic best practices - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 62
GUI Refer to the HP StoreOnce Backup system user guide or online help for detailed information about using the Catalyst functions on the StoreOnce GUI. Maximum concurrent jobs and blackout windows As with VTL and NAS replication, each StoreOnce appliance supports a maximum number of concurrent - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 63
have a process that allows client access to the Catalyst stores to be controlled. First overall client access permission checking is enabled from the StoreOnce Catalyst - Settings tab. Figure 37 Enabling client access permission checking Then each Catalyst store has a list of clients defined who are - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 64
Catalyst Copy). For this reason, best practices and configuration are dependent upon the backup application. See the separate document, HP StoreOnce Backup systems Best practices for VTL, NAS, StoreOnce Catalyst and Replication implementations with sizing and application configuration examples. 64 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 65
for tape rotation strategies. (It may be necessary to upgrade your backup application to support libraries.) Tape Library Emulation Emulation types HP StoreOnce Backup systems can emulate several types of physical HP Tape Library device; the maximum number of drives and cartridge slots is defined by - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 66
to be used. Number of libraries per appliance The StoreOnce appliance supports the creation of multiple virtual library devices. If large amounts MB is suggested if the backup application and operating system will support this. For HP Data Protector and EMC Networker Software a block size of 512 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 67
below shows cartridge containing multiple appended backup sessions some of which are expired and other that are valid. Space will be used by the StoreOnce appliance to store the expired sessions as well as the valid sessions. Moving to an overwrite strategy will avoid this. With virtual tape a large - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 68
required in above rotation = 25 Each backup job effectively has its own virtual tape. Summary of VTL best practices NOTE: The HP StoreOnce B6200 Backup system supports only FC VTLs. • Make use of multiple network or Fibre Channel ports throughout your storage network to eliminate bottlenecks. • For - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 69
best throughput. • Create multiple libraries on the larger StoreOnce appliances to achieve best aggregate performance • Configure dedicated (whichever is the smaller) • Use a block size of 256KB or greater. For HP Data Protector and EMC Networker software a block size of 512 KB has been found to - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 70
NAS share to seed an appliance for replication. Operating system support Two interfaces are supported: • a CIFS interface for Windows networks • a NFS interface for Linux and UNIX networks See the HP StoreOnce Backup System user guide for more information about using the Web Management Interface to - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 71
some possible configurations. Table 7 Maximum number of virtual devices per service set VTL NAS Catalyst Total number of devices 48 0 0 48 . This non-deduplicated region is called the deduplication threshold. The HP StoreOnce Backup System imposes a limit on the number of files that can - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 72
the backup application services. Individual users can then be assigned access to individual shares on the StoreOnce appliance. This to the "HP StoreOnce Backup system user guide" for more information about configuring authentication. Backup application configuration The HP StoreOnce Backup system - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 73
varies as to what it calls a backup device that is located on a StoreOnce device, for example it may be called a File Library, Backup to a file in the middle. If a write-in-place operation does occur, the StoreOnce appliance will create a new backup item that is not deduplicated, a pointer to this - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 74
to write the entire backup file. This setting has no value for StoreOnce devices because it will not result in any physical disk space actually being backup failures occur, disabling buffered writes and reads may fix the problem, in which case, reducing the number of concurrent backup streams then - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 75
preventing the ability to match similar data blocks. The best practice is to disable software encryption and compression for all backups to the HP StoreOnce Backup system. Verify By default most backup applications will perform a verify pass on each back job, in which they read the backup data - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 76
ensure the correct mount options are used to ensure in-order delivery and provide better deduplication ratios. See the HP StoreOnce Linux and UNIX Configuration Guide for specific details. • Configure bonded network ports for best performance. • Monitor the number of files created in the share - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 77
addresses of the target and source StoreOnce Backup Systems. • In a multi-node StoreOnce Backup System, the appliance is the service set that contains the data to Wizard is provided to take you through HP StoreOnce Replication configuration steps. StoreOnce replication is a concept that is used - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 78
soon as it is closed (or the VTL cartridge returned to its slot). Replication works in a "round robin" process through the libraries and shares on a StoreOnce Backup system; when it gets to an item that is ready for replication it will start a replication job for that item assuming there is not - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 79
Figure 40 Active to passive replication Figure 41 Active to active replication Replication usage models (VTL and NAS) 79 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 80
Figure 42 Many to Once replication 80 Replication - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 81
backups. Reducing the number of cartridges that make up the replication mapping may also be useful when replicating several source libraries from different StoreOnce devices into a single target library at a data center, for example. Limited slots in the target library can be better utilized to take - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 82
the backup application then manually assigning source library Each StoreOnce model has a different level of support for the number of other StoreOnce appliances that HP 2620 may be replicating up to 4 jobs to a StoreOnce 4430, which may also be accepting another 44 source items from other StoreOnce - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 83
is too low to support the number of hp.com/SWDSizerWeb/ default.htm) is used to identify the product and WAN link requirements because the required bandwidth is complex and depends on the following: • Amount of data in each backup • Data change per backup (deduplication ratio) • Number of StoreOnce - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 84
capable of accepting 8 concurrent replication jobs (HP 4220) and there are enough concurrently running provision by your telco can often alleviate this problem. • Using co-location where two devices are StoreOnce Backup system deployment plan as it can sometimes be very time consuming or manually - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 85
. Replication models and seeding The diagrams in Replication usage models (VTL and NAS) (page 78) indicate the different replication models supported by HP StoreOnce Backup systems; the complexity of the replication models has a direct influence on which seeding process is best. For example an - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 86
have a physical Tape archive as part of the final solution. nl Best suited for StoreOnce VTL deployments. nl Unlikely to be used when seeding HP StoreOnce B6200 Backup systems. Relies on the backup application supporting the copy process, e.g. Media copy or "object" copy" or "duplicate" or "cloning - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 87
can use for replication across all replication jobs. The replication bandwidth limiting settings can be found on the StoreOnce Management Interface on the HP StoreOnce - Replication - Local Settings - Bandwidth Limiting page. There are two ways in which replication bandwidth limits can be applied - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 88
tab to prevent malicious or accidental configuration of replication mappings from unknown or unauthorized source appliances. See the HP StoreOnce Backup system user guide for information on how to configure Source Appliance Permissions. Note the following changes to replication functionality when - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 89
this chapter illustrate single node systems only. There is a separate chapter that illustrates how to implement replication and seeding with the HP StoreOnce B6200 Backup system. Seeding over a WAN link With this seeding method the final replication set-up (mappings) can be established immediately - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 90
In the active-active replication model, WAN seeding after the first backup at each location is, in fact, the first wholesale replication in each direction. Figure 48 Seeding over a WAN link, active-active replication model 90 Seeding methods in more detail - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 91
In the Many-to-One model, WAN seeding over the first backup is, in fact, the first wholesale replication from the many remote sites to the Target site. Care must be taken not to run too many replications simultaneously or the Target site may become overloaded. Stagger the seeding process from each - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 92
site to Data Center, in an active/passive replication model. The initial backup and replication takes place at the remote site over the LAN. The StoreOnce appliance holding the replicated data is then transported to the Data Center. Figure 50 Co-location seeding in an Actve/Passive replication model - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 93
model 1. Initial backup at each remote site 2. Replication to Target StoreOnce appliance over GbE link at each remote site over LAN 3. Move Target StoreOnce appliance between remote sites 4. Finally take Target StoreOnce appliance to Data Center and repeat replication. site. 5. Re-establish - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 94
is more complex because for large fan-in (many source sites replicating into single target site) the initial replication set up on the floating StoreOnce appliance changes as it is then transported to the data center, where the final replication mappings are configured. The sequence of events is as - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 95
onto the removable media. * Different backup software describes "disk targets for backup" in different ways e.g. HP Data Protector calls StoreOnce NAS shares " DP File Libraries", Commvault Simpana calls StoreOnce NAS shares "Disk libraries." Seeding using physical tape or portable disk drive 95 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 96
software to perform a full media copy of the contents of the StoreOnce Backup system to a physical tape or removable disk target for backup also limited to about 3 TB per tape, but of course multiple tapes are supported if a tape library is available. For USB disks, separate backup targets for - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 97
NAS devices for backup; but for seeding large volumes of sequential data this usage model is acceptable. Only HP Data Protector, Symantec NetBackup and Symantec Backup Exec support HP StoreOnce Catalyst - but Catalyst stores can be "copied" to Tape or USB Disk using object copy (DP), duplicate - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 98
system The main difference with the HP B6200 StoreOnce implementation is that replication is part of the service set. Each service set (associated to Node 1, . This means that replication continues without the need for manual intervention but performance may deteriorate. Possible ways to improve - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 99
Figure 54 Using dedicated nodes for replication targets at the target site (Active/Passive replication) Active/Passive and Active/Active configurations 99 - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 100
Figure 55 Using dedicated nodes for replication targets at the target site for Active Passive, along with backup sources at Site B 100 Implementing replication with the HP B6200 Backup system - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 101
In Figure 56 we deliberately provide one node on each couplet that is dedicated to replication. This simplifies the management, and the loading and performance is easier to predict. The way the couplets are balanced also means that wherever a node fails over we do not lose all our replication - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 102
per device). The sources (remote offices) are more likely to be single-node HP StoreOnce StoreOnce Backup systems. For a large number of remote sites co-location is impractical, instead the Floating StoreOnce option is recommended. Physical tape and seeding over a WAN link both have difficulties - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 103
with 100+ locations, some being international locations. The floating StoreOnce and co-location will be difficult, so the only option is into multiple dedicated replication target devices. The current recommendation with the HP B6200 Backup System is to keep the same relationship between remote - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 104
Each service set on each node is relatively at the same load (load balancing is a manual process) • Each node has a single function, VTL backup targets node, NAS backup targets node, Replication target. This makes management and load assessment easier 104 Implementing replication with the HP - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 105
• FC SAN 1 with its larger number of hosts and capacities is spread over four nodes all with maximum storage capacity. There are at least eight streams per node to provide good throughput performance • All the NAS target backups have been grouped together on node 5 and 6 on 10GbE - these could be - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 106
large housekeeping loads are created if large numbers of cartridges are manually erased or re-formatted. In general all media overwrites should StoreOnce environment including setting housekeeping windows. NOTE: With the HP B6200 Backup system, housekeeping blackout windows are configured per service - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 107
type basis. NOTE: With the HP B6200 Backup system, housekeeping statistics are per service set. Figure 59 Housekeeping jobs days. • Load graph (top graph): will display what levels of load the StoreOnce appliance is under when housekeeping is being processed. However this graph is intended for use - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 108
too short (housekeeping blackout window too large), or we may be overloading the StoreOnce appliance with backup and replication jobs and the unit may be undersized. Another indicator devices. There is a worked example in HP StoreOnce Backup system Summary of Best Practices with Sizing Tool and - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 109
This is when a physical tape library device is connected directly to the rear of the StoreOnce Backup system. This offload feature is not currently supported on HP StoreOnce Backup system. Backup application Tape Offload/Copy from StoreOnce Backup system This is the preferred way of moving data from - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 110
backup job specification. The following examples relate to StoreOnce Replication. Catalyst device types The visibility, flexibility and integration of Catalyst stores into the backup software is one of the key advantages of HP StoreOnce Catalyst - especially because the replicated copies are already - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 111
target site for VTL and NAS device types 1. Backup data written to StoreOnce Source 2. StoreOnce low bandwidth replication 3. All data stored safely at DR site. Data at StoreOnce target (written by StoreOnce source via replication) must be imported to Backup Server B before it can be copied - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 112
to physical tape can then take place. These limitations do not exist if HP StoreOnce Catalyst device types are used. HP StoreOnce Optimum Configuration for Tape Offload Optimizing tape offload from HP StoreOnce Backup System is achieved by reading multiple data streams simultaneously into a backup - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 113
from an HP StoreOnce Backup System. HP LTO 6 HP Recommended Physical StoreOnce Physical Drives Library HP MSL 2 StoreOnce 2024 2700 and 2620i SCSI HP MSL 3 StoreOnce 4048 4210i SCSI & FC HP MSL 3 StoreOnce 4048 4210 & 1 Shelf HP MSL 3 StoreOnce 4048 4500, 4220 HP MSL - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 114
7 14 ESL G3 8 15 StoreOnce 4700 and 4430 HP ESL G3 6 12 ESL G3 7 14 ESL G3 8 15 StoreOnce 4700 and 4430 & 1 Shelf HP ESL G3 6 12 ESL G3 7 14 ESL G3 8 8 StoreOnce 4700 and 4430 & 2 Shelves HP ESL G3 6 12 ESL G3 7 14 ESL G3 8 8 StoreOnce 4700 and 4430 & 3 Shelves - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 115
Backup Table 10 Key parameters for HP StoreOnce B6200 Backup StoreOnce Backup products running software 3.0.0 and 96 192 288 384 32 64 96 128 96 192 288 384 Physical Tape Copy Support Supports direct attach of physical tape device Max Concurrent Tape Attach Jobs Appliance No N/A No - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 116
service set = 192 StoreOnce 2700, 4500 and 4700 Backup Table 11 Key parameters for HP StoreOnce 2700, 4500 and 4700 Backup StoreOnce 8 8 24 50 12 24 48 24 48 96 Physical Tape Copy Support Supports direct attach of physical tape device Max Concurrent Tape Attach Jobs Appliance No - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 117
data and copy jobs per 48 appliance 32 64 24 48 96 192 StoreOnce 2610/2620, 4210/4220 and 4420/4430 Backup Table 12 Key parameters for HP StoreOnce 2610/2620, 4210/4220 and 4420/4430 Backup StoreOnce Backup products running software 3.4.0 and later Devices Usable Disk Capacity (TB) (With - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 118
HP StoreOnce 2610/2620, 4210/4220 and 4420/4430 Backup (continued) StoreOnce Backup products running software 3.4.0 and later StoreOnce 2610 nl iSCSI StoreOnce 2620 nl iSCSI StoreOnce 4210 nl iSCSI/FC StoreOnce 4220 StoreOnce 4420 StoreOnce Physical Tape Copy Support Supports direct attach of - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 119
parameters for HP StoreOnce 2610/2620, 4210/4220 and 4420/4430 Backup (continued) StoreOnce Backup products running software 3.4.0 and later StoreOnce 2610 nl iSCSI StoreOnce 2620 nl iSCSI StoreOnce 4210 nl iSCSI/FC StoreOnce 4220 StoreOnce 4420 StoreOnce 4430 StoreOnce Catalyst Catalyst - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 120
and UNIX Reference Guide • HP StoreOnce Backup system User Guide • HP StoreOnce Backup system Maintenance and Service Guide You can find these documents from the HP Support Center website: http://www.hp.com/support/ Query on your product name and then select the Product Manuals link. Document - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 121
IMPORTANT: Provides clarifying information or specific instructions. NOTE: Provides additional information. HP technical support For worldwide technical support information, see the HP support website: http://www.hp.com/support Before contacting HP, collect the following information: • Product model - HP StoreOnce D2D2504i | HP StoreOnce Backup System Concepts and Configuration Gu - Page 122
To make comments and suggestions about product documentation, please send a message to [email protected]. All submissions become the property of HP. 122
HP StoreOnce
Backup systems Concepts and Configuration
Guidelines
Abstract
If you are new to the HP StoreOnce Backup System, read this guide before you configure your system. It provides network and
Fibre Channel configuration guidelines, describes the StoreOnce VTL, NAS, StoreOnce Catalyst and Replication technology
and advises how to plan the workload being placed on the HP StoreOnce Backup System in order to optimize performance
and minimize the impact of backup, deduplication, replication and housekeeping operations competing for resources. The
information in this guide is valid for both single-node and multi-node G3 StoreOnce Backup systems, running software version
3.6.0 and later.
IMPORTANT:
Always check
h
t
tp://w
w
w
.hp
.co
m/su
ppo
r
t/man
uals
for the most up-to-date documentation for your product.
HP Part Number: BB877-90913
Published: November 2013
Edition: 4