HP D2D4009fc HP StoreOnce Backup System Concepts and Configuration Guidelines
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- HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 2
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 the separate document HP StoreOnce Backup system best practices for VTL, NAS, StoreOnce Catalyst and - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 4
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 support with backup applications 48 Designing for failover ...49 Key Failover FC zoning - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 5
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 configurations 102 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 7
decide which makes most efficient use of available bandwidth. 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 software version 3.x.x.) These products are also sometimes referred to - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 8
jobs between HP StoreOnce Backup systems. All configuration is carried out from the backup application, which makes this an attractive alternative to using the replication function on the HP StoreOnce Backup system. This function requires a backup application that supports HP StoreOnce Catalyst. For - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 9
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 purpose file storage. There - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 10
HP StoreOnce B6200 Backup system does not support iSCSI virtual libraries. • The HP StoreOnce 2700, 2620 and 4210 iSCSI Backup systems do not support FC virtual libraries. Table 5 Single node systems, ethernet and FC ports Product/Model Name StoreOnce 2700 StoreOnce 4500 StoreOnce 4700 StoreOnce - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 11
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 be applied from the StoreOnce CLI. See the HP StoreOnce CLI User Guide for more information. Licensing 11 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 12
. For more information on applying this type of license, see the HP StoreOnce backup system Installation and Configuration guide and the HP StoreOnce Backup system CLI Reference Guide. Security Features The HP StoreOnce backup system offers two security features that can be applied using a Security - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 13
HP service specialists arriving on site to install the product. • HP StoreOnce 2620, 4210/4220 and 4420/4430 Backup system Installation and Configuration Guide (PDF): This guide is the installation and configuration guide for the single-node HP StoreOnce Backup systems. • HP StoreOnce Backup system - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 14
works is necessary in order to 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 15
target VTL library will give a better deduplication ratio on the target StoreOnce Backup system. Consolidation of remote sites into a single device at the target is of concurrent replication jobs supported by source and target StoreOnce appliances can be varied in the StoreOnce Management GUI to also - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 16
stream. This must be disabled by reducing the "Concurrency" configuration value for the tape device from 4 to 1. Why multiplexing is a bad practice HP StoreOnce Backup systems rely on very similar repetitive data streams in order to de-duplicate data effectively. When multiplexing is deployed the - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 17
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 to separate devices. This will ensure better throughput - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 18
throughput in MB/sec that the StoreOnce device can process - this ultimately dictates the backup window. As a backup window begins, the number of calculated using "Infinite performance hosts" to characterize the HP StoreOnce ingest performance. As long as we can supply around 24 data streams - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 19
Sec we 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 the backup threads from sources to ensure that, while backups are running, sufficient source "data pump" is maintained to hold the StoreOnce - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 20
ingest of the StoreOnce appliance is 600MB/sec but we can only achieve 500 MB/sec because that is as fast we we can supply the data (because of stream limitations). If we could re-configure the backups to provide more we reach 48 streams or more. So, for 100 streams 20 HP StoreOnce technology - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 21
source data and will, therefore, not result in a high deduplication ratio for these data sources. Consequently, performance will also suffer. The StoreOnce Backup system will compress the data at the end of deduplication processing anyway, before finally writing the data to disk. For these reasons - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 24
consumes 100 TB and a service set on node 2 that consumes 28 TB of the available 128 TB. (However, this is not best practice and not recommended.) This architecture scales dramatically and the maximum configuration can be seen below. Figure 7 HP B6200 Backup system, maximum configuration Note that - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 25
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 network and - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 26
Figure 9 HP B6200 Backup system, customer connections 26 Concepts specific to StoreOnce B6200 Backup system - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 27
shares and also for replication data transfer and management access to the StoreOnce Web and CLI Management Interfaces. NOTE: The HP StoreOnce B6200 Backup system does not support iSCSI VTL devices. Configured backup devices and the management interfaces are all available on all network IP addresses - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 28
included in this 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 4420/4430 The - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 29
StoreOnce Backup 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 30
and restore are acceptable. A single 10GbE port could also be configured in this way (on 4420/4430 appliances), providing both a backup data interface and management interface. This could deliver good performance, however, bonded ports are recommended for resiliency and maximum performance. Figure - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 31
, dual port mode In the case of a separate network SAN being used, configuration of CIFS backup shares with Active Directory authentication requires careful consideration, see Network Configurations for CIFS AD for more information. Network configuration in single-node StoreOnce Backup systems 31 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 32
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 performance and also for resiliency of both data and management network connectivity. It should be noted that when using bonded ports the - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 33
the appliance CIFS server may be made a member of the AD Domain so that Active Directory users can be authenticated against CIFS shares on the StoreOnce Backup system. However, in order to make this possible the AD Domain controller must be accessible from the - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 34
authentication traffic. In this case optimal 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 38
to support Template 2 should use Template 5 instead. Figure 17 Template 2 cabling to customer's networks 1, 2, 3 and 4 blue cables bonded 1 GbE ports to customer's data and management network internal cabling, should not be removed 38 Network configuration in multi-node StoreOnce Backup systems - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 39
Template 3, uses 10GbE network only Template 3 supports users who have a 10GbE network only. The same network is used for data and management. The default bonding mode for this template is Mode 1, Active/Backup. The recommended IP address range is 17 in total: 1 for management and 16 contiguous for - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 40
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 -node StoreOnce Backup systems - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 41
6 Fibre Channel considerations The HP StoreOnce B6200 Backup system supports switched fabric using NPIV only. All other HP StoreOnce Backup systems support both switched fabric and direct attach (private loop) topologies. Switched fabric using NPIV (N Port ID Virtualisation) offers a number of - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 42
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 fabric topology - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 45
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 ports - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 46
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 from - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 47
to happen without manual intervention. • NAS target failover is via the Virtual IP system used in the HP B6200 Backup System - the service set simply presents the failed node Virtual IP address on the remaining node. • FC (VTL device) failover relies on the customer's fabric switches supporting NPIV - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 48
can happen. Failback can be implemented either from the CLI or the GUI interface. Restores are generally a manual process and restore jobs are typically not automatically retried because they are rarely scheduled. 48 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 49
service set and replication fails over as well as backup or GUI) is a manual process and should be HP B6200 Backup System and its autonomic failover ability. Conformance to the following rules will help to ensure successful failover • Fibre Channel switches used with HP StoreOnce must support - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 50
channel port presentations When you create a virtual tape library on a service set you specify whether the VTL should be presented to: • 255 WWNs per port, the HP B6200 Backup System applies a maximum of 120 guide. 50 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 51
Figure 25 VTL FC example port configurations Fibre channel port presentations 51 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 52
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 • Default , recommended configuration 52 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 53
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 on - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 to fabrics, recommended configuration 54 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 55
Complex configuration with ports of different VTLs being presented to different fabrics, Fabric 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, E and F also have access to Fabric 1, then all - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 56
• 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 to , switch or fabric 56 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 58
, 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 who have legacy requirements for VTL and NAS - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 59
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 a StoreOnce Catalyst store; it is a network based - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 60
the Catalyst Agents running on remote office media servers HP StoreOnce Catalyst technology has the ability to back up directly from remote sites to a central site, using what is known as low bandwidth backup - essentially this uses HP StoreOnce replication technology. 60 StoreOnce Catalyst stores - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 61
(called Catalyst Copy). 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 66
backups are to be offloaded to physical media elsewhere in the network, it is recommended that the cartridge sizing matches that of the physical media to be used. Number of libraries per appliance The StoreOnce appliance supports the backup application and operating system will support this. For HP - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 67
need to modify the following registry setting: nl nl HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\ nl {4D36E97B-E325-11CE-BFC1-08002BE10318}\0000 multiple appended backup sessions some of which are expired and other that are valid. Space will be used by the StoreOnce appliance to store - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 68
to run, the same is true for monthly and yearly backups. Total virtual tapes 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 69
StoreOnce appliances to achieve best aggregate performance • Configure dedicated Individual libraries for backing up larger servers. • Configure other libraries for consolidated backups ) • Use a block size of 256KB or greater. For HP Data Protector and EMC Networker software a block size of 512 KB - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 71
StoreOnce appliance is split between VTL, NAS and Catalyst devices..These devices may be all VTL, all NAS or any combination of NAS and VTL devices. The following table illustrates some possible configurations. Table 7 Maximum number of virtual devices per service HP StoreOnce Backup System imposes - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 72
option. Refer to the "HP StoreOnce Backup system user guide" for more information about configuring authentication. Backup application configuration The HP StoreOnce Backup system NAS functionality is designed to be used with backup applications that create large "backup files" containing all of - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 73
append to the end of an existing file rather than accessing 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 new item is then created so that when the file is read the new write - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 74
ensure that there is enough disk space available 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 allocated due to the deduplication system. It is advised that this setting is NOT used because it can - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 75
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 from the StoreOnce appliance and check against the original data. Due to - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 76
in order" - which enables the best deduplication ratio. The name of the mount option varies according to the operating system; some operating systems also require an update package to be installed to enable this. See the HP StoreOnce Linux and UNIX Configuration Guide for more details. 76 NAS shares - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 77
physical IP 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 be replicated. This means that each B6000 Backup System has at least two service sets that can be selected as appliances. All - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 78
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 already - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 79
Figure 40 Active to passive replication Figure 41 Active to active replication Replication usage models (VTL and NAS) 79 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 80
Figure 42 Many to Once replication 80 Replication - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 81
to only replicate those cartridges that are used for the full 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 82
not - so for example, you could configure only Full backups to be copied to Catalyst stores. Appliance library and share replication fan in/fan out Each StoreOnce model has a different level of support for the number of other StoreOnce appliances that can be involved in replication mappings with it - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 83
device can support for 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 systems - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 Active - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 87
Backup system 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 89
described in this chapter apply to all HP StoreOnce Backup systems, the diagrams in 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 92
co-location seeding from a remote 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 93
seeding in an Actve/Passive replication 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 94
the taken to the Data Center. It is a useful model for large-in fan scenarios. Figure 52 Seeding using floating StoreOnce Backup system 1. Initial backup at each remote site 2. Replication to floating StoreOnce Target appliance over GbE link at each remote site over LAN 3. Move floating Target - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 95
, TNASshare1. 2. At each remote site perform a full system backup to the source StoreOnce appliance and then configure a 1:1 mapping relationship with the floating StoreOnce appliance " e.g. SVTL1 on Remote Site A -> FTVTL1 on floating StoreOnce. FTVTL1 = floating target VTL1. 3. Seeding remote site - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 96
onto NAS share on the StoreOnce target). Proceed as follows 1. Perform full system backup to the StoreOnce Backup system at the remote site using tape, but of course multiple tapes are supported if a tape library is available. For USB disks, separate backup targets for disk devices would need to - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 97
NOT to be used for day to day use of StoreOnce 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 98
HP B6200 Backup system The main difference with the HP B6200 StoreOnce implementation is that replication is part of the service set. Each service completed. This means that replication continues without the need for manual intervention but performance may deteriorate. Possible ways to improve this - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 101
also means that wherever a node fails over we do not lose all our replication performance. In the failover scenario the remaining node can still handle backup in one time window and replication in another time window so the overall impact of a failed node is not that damaging. Figure 56 Using - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 102
a fan-in of up to 384 replication jobs to a maximum-configuration HP B6200 Backup System is possible (one stream 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 103
customers with 100+ locations, some being international locations. The floating StoreOnce and co-location will be difficult, so the only option is dedicated replication target devices. The current recommendation with the HP B6200 Backup System is to keep the same relationship between remote site - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 104
The specification for a B6200 service set is that it can accept 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 B6200 Backup system - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 105
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 VMWare backups which generally require a backup to NAS target. Again all NAS targets are balanced equally across nodes 5 and 6 and - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 106
worked examples for a fully worked example of configuring a complex StoreOnce environment including setting housekeeping windows. NOTE: With the HP B6200 Backup system, housekeeping blackout windows are configured per service set. Without a housekeeping blackout window set, the housekeeping can - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 108
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 is the devices. There is a worked example in HP StoreOnce Backup system Summary of Best Practices with Sizing Tool and - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 109
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 a StoreOnce Backup system to physical tape. The data - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 110
from StoreOnce Backup system versus Mirrored Backup from Data Source A summary of the supported methods is shown below. Table 9 Tape Offload/Copy For easiest integration nl Backup application copy to tape For optimum performance nl Separate physical tape mirrored backup The backup application - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 111
copy to tape 2. Low bandwidth Catalyst Copy VTL and NAS device types Figure 62 Backup application tape offload at StoreOnce 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 112
offload time. To achieve multiple data streams on a HP StoreOnce Backup System, create an offload job in the backup application, which reads from multiple objects stored on the HP StoreOnce Backup System simultaneously, then using the backup application's multiplexing option to write to a single - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 115
Key parameters StoreOnce B6200 Backup Table 10 Key parameters for HP StoreOnce B6200 Backup StoreOnce Backup products running 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 116
service set = 192 StoreOnce 2700, 4500 and 4700 Backup Table 11 Key parameters for HP StoreOnce 2700, 4500 and 4700 Backup StoreOnce Backup 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 117
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 full - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 120
Backup system Linux 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 - HP D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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 D2D4009fc | HP StoreOnce Backup System Concepts and Configuration Guidelines - 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