HP StoreOnce 4430 HP StoreOnce Backup System Concepts and Configuration Guidel
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- HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 1
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 http://www.hp.com/support/manuals for - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 2
document HP StoreOnce Backup system best practices for VTL, NAS, StoreOnce Catalyst and Replication implementations. Revision 4 October 2013 This is the fourth edition, issued with the 3.9.0 version of the HP StoreOnce software. It has been updated to include new models, HP StoreOnce 2700 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 4
support failover in a StoreOnce B6200 Backup system environment 47 Autonomic failover...47 What happens during autonomic failover 47 Failover support with backup 68 10 NAS shares 70 Operating system support...70 Backup application support...70 Shares and deduplication stores 70 Maximum - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 7
StoreOnce Backup system (high bandwidth), allowing the user to 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 8
hot spare disks 4 x 1GbE ports nl 4 x 10GbE ports nl 4 x FC ports Table 3 StoreOnce 2620. 4210, 4220, 4420 and 4430 models Product model Description Interfaces supported Ports HP StoreOnce 2620 A single server with iSCSI only Backup , BB852A four 1TB disks 2 x 1GbE ports HP StoreOnce 4210 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 9
2.0) is required on each backup application media server that will use the Catalyst functionality. This can be downloaded from the Software Storage section of your StoreOnce product's Download drivers and software page on http://www.hp.com/support/downloads. OST/Catalyst devices require a license - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 10
be lower cost for NAS shares as a backup target. Consider this device type for virtualized environments StoreOnce Catalyst (stores) Backup software has total control over the HP StoreOnce appliance, providing source-based deduplication, replication control, improved DR etc. Environments that - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 11
The HP StoreOnce Backup system has the following licensing requirements: • Each storage shelf arrives with a license that must be loaded, further capacity upgrades also arrive with a license included. • There is no licensing required for VTL or NAS emulations. • VTL and NAS replication requires - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 12
such as Replication Target, Catalyst, or the Security features of Data at Rest Encryption and Secure Erase. 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 13
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 Capacity Upgrade booklet (PDF): This guide describes how to install the capacity upgrade kits. • HP - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 14
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 incoming - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 15
remote office StoreOnce libraries, replicating these into a single target VTL library will give a better deduplication ratio on the target StoreOnce Backup system. Consolidation concurrent replication jobs supported by source and target StoreOnce appliances can be varied in the StoreOnce Management - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 16
servers in a single backup job, it will default to writing four concurrent multiplexed servers in a single 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 streams calculated using "Infinite performance hosts" to characterize the HP StoreOnce ingest performance. As long as we can supply around 24 data streams - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 streams we reach 48 streams or more. So, for 100 streams 20 HP StoreOnce technology - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 21
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; deduplication ratios are data type dependent - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 22
appliance is managed by a single graphical user interface (GUI) and also supports a command line interface (CLI). The HP B6200 Backup System is replication compatible with existing HP StoreOnce Backup Systems and can support a fan-in of up to 384 concurrent replication streams (up to 48 per node - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 25
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 network - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 26
Figure 9 HP B6200 Backup system, customer connections 26 Concepts specific to StoreOnce B6200 Backup system - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 27
appliance is connected to a DHCP-enabled 1GbE network switch, the HP StoreOnce Backup system will be immediately active on the network after installation. The user then has the option of continuing to use the default configuration file or creating and activating an additional configuration file that - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 28
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 multi - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 31
network ports. A maximum of 4 separate subnets can be configured on a StoreOnce 4420 or 4430 appliance (2 x 1GbE and 2 x 10GbE). Use this mode: • 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 33
good performance when using StoreOnce Catalyst low and high bandwidth backup as well as Catalyst copy or VTL/NAS replication between appliances. When using the AD Domain so that Active Directory users can be authenticated against CIFS shares on the StoreOnce Backup system. However, in order to make - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 36
used see the HP StoreOnce Backup system installation preparation and planning guide. What is currently supported • IPv4 is supported. • DNS is supported. • A maximum of two sub-nets is supported, which can be used as follows: one sub-net for data (NAS shares, Catalyst stores and replication) and one - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 37
StoreOnce 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 default' gateway. NOTE: In this context, 'default' is purely a mechanism to allow the user - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 39
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 used for remote/external site replication traffic. The default bonding mode for this template is Mode 1, Active/Backup, on both sub-nets. - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 40
for customers who only use VTL as their backup targets and do not use StoreOnce Catalyst stores or NAS CIFS/NFS shares. VTL replication jobs will still run over the Ethernet connections. The default bonding mode for this template is Mode 1, Active/Backup, on both sub-nets. The recommended IP address - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 41
StoreOnce 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 (medium changer) part of the VTL been cabled correctly when - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 42
, and 4420 and 4430). 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 43
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% to each port (2 each in this case). This mode is useful in high availability SANs General Fibre Channel configuration guidelines 43 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 44
: The HP StoreOnce B6200 Backup system is not supported in direct StoreOnce Backup system may be connected to a FC private loop, direct attach topology. The FC port configuration of the StoreOnce appliance should be changed from the default N_Port topology setting to Loop. This topology only supports - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 45
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 or more)-use host - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 46
port. This means there are two per HP StoreOnce Backup system or node that has two Fibre HP D2D S/N-CZJ1440JBS HP D2DBS Diagnostic Fibre Channel S/N-MY5040204H Port-1" "HP D2D S/N-CZJ1440JBS HP /node. At this time these devices are part of the StoreOnce VTL implementation and are not an error or - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 47
the Fibre Channel ports are the key technology enablers that allow this 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 48
it is available. • HP Data Protector 6.21: job retries are currently supported by using a post-exec script. Download from B6200 support documentation. • Symantec NetBackup 7.x: job retries are automatic, but after a period without a response from the backup device the software marks the devices as - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 49
who are more price-conscious and where failover replicated data). • Failback (via CLI or GUI) is a manual 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 50
the D2D diagnostic device create a virtual tape library on a service set you specify whether the VTL should Only the robotics (medium changer) part of the VTL is presented to the HP B6200 Backup System guide. 50 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 51
Figure 25 VTL FC example port configurations Fibre channel port presentations 51 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 52
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 library configuration is 50% drives presented to configuration 52 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 54
targets on the HP B6200 Backup system • Equivalent ports from each node can see the same fabric, but are directed to different switches B6200 VTL configuration • Default library configuration is 50 configuration 54 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 port, switch or fabric 56 Configuring FC to support failover in a StoreOnce B6200 Backup system environment - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 58
StoreOnce Catalyst systems without rehydration. This means that the user benefits from: • Simplified management of data movement from the backup application: tighter integration with the backup software to manage file replication or replication. All HP StoreOnce Backup systems can support Catalyst - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 59
feature both on the StoreOnce 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 60
to limit the amount of WAN link consumed by StoreOnce Catalyst copy; in this respect it is similar to NAS and VTL replication. Catalyst Copy has the following features: • The Copy job is configurable from within the backup application software. • Several source Catalyst stores can be copied into - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 61
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. Generic - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 64
virtual tape or NAS. It provides the backup application with full control of backup and replication (called 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 66
. The recommended minimum is 256 KB block size, and up to 1 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 KB has been found to provide the best deduplication ratio and performance balance - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 67
implementation, by default, does not allow block sizes that are greater than 256 KB. The diagram 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 69
StoreOnce appliances to achieve best aggregate performance • Configure dedicated Individual libraries for backing up larger servers. • Configure other libraries for consolidated backups For HP Data Protector and EMC Networker software backup, this improves replication performance and capacity utilization. Summary - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 70
are using the 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 71
the StoreOnce Event Log so the user knows this has happened. Corrective action for this situation is to reduce the overall concurrent backups that . This non-deduplicated region is called the deduplication threshold. The HP StoreOnce Backup System imposes a limit on the number of files that can be - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 72
application media server is a member of an AD domain. It is the preferred 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 73
When using a backup application with StoreOnce NAS shares the user will need to configure a new type of device in their backup application. Each application 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 Disk - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 74
application inadvertently causing the StoreOnce appliance to have more concurrently open files than the specified limits (because files may not have had time to close before a new open request is sent). If backup failures occur, disabling buffered writes and reads may fix the problem, in which case - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 75
data backed up will look different in every backup 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 76
backup across multiple shares. • Disable software compression, deduplication and synthetic full backups. • Do not pre-allocate disk space for backup files within the backup package to be installed to enable this. See the HP StoreOnce Linux and UNIX Configuration Guide for more details. 76 NAS shares - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 78
be sharing the same WAN link. VTL and NAS replication is configured between devices using "Mappings" and is not known to the backup software but is controlled entirely by the StoreOnce appliance. Catalyst Copy is controlled entirely by the backup software and has no Mappings within the device to - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 79
Figure 40 Active to passive replication Figure 41 Active to active replication Replication usage models (VTL and NAS) 79 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 80
Figure 42 Many to Once replication 80 Replication - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 81
entirety). What to replicate StoreOnce VTL replication allows for a subset of the cartridges within a library to be mapped for replication rather than the entire library (NAS replication does not allow this). Some retention policies may not require that all backups are replicated, for example daily - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 82
time. As soon as one item has finished replicating another will start. For example, an 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 systems. But the target concurrency for a 4430 is 96 so the target is not the - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 83
.www3.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 replicating • Number - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 84
alleviate this problem. • Using co-location where two devices are physically in the same location and can use a GbE replication link for replication. It is good practice to plan for seeding time in your StoreOnce Backup system deployment plan as it can sometimes be very time consuming or manually - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 85
to the performance of the original backup. 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 86
sites that plan to 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 87
set is the maximum bandwidth that the StoreOnce 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 88
HP StoreOnce Backup system user guide for information on how to configure Source Appliance Permissions. Note the following changes to replication will not be able to create new libraries and shares as part of the replication wizard process, instead these shares and libraries must be created ahead - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 89
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. In the active-passive - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 95
we set up replication the StoreOnce 4220 at the target site presents a list of possible target replication devices available 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 96
backup application 1. Initial backup to StoreOnce appliance 3. Ship tapes/disks to Data Center site. 5. Establish replication. 2. Copy to tape(s) or a disk using backup application software multiple tapes are supported if a tape library is available. For USB disks, separate backup targets for disk - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 97
replication the StoreOnce 4220 at the target site presents a list of possible target replication 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 98
13 Implementing replication with the HP B6200 Backup 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, Node 2, et cetera) can handle a maximum of 48 incoming concurrent replication jobs per - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 101
couplets are balanced 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 102
office deployments where 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 103
, some being international locations. The floating StoreOnce and co-location will be difficult, so replicating into multiple dedicated replication target devices. The current recommendation with the HP B6200 Backup System is to keep the same relationship between remote site VTLs and replication - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 104
overview of what is required. Note that: • 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 105
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 least loaded hosts, so this couplet is the obvious candidate for use as the replication target. • Keep it simple and easy to understand - that's the key - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 106
to ensure that other activities such as backup and replication can run uninterrupted and therefore give more predictable performance. Blackout windows must be set on BOTH the source StoreOnce appliance and Target StoreOnce appliance. See HP StoreOnce Backup system Best Practices with Sizing Tool and - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 107
HP B6200 Backup system, housekeeping statistics are per service set. Figure 59 Housekeeping jobs received versus housekeeping jobs processed The Housekeeping load on the target replication graph): will display what levels of load the StoreOnce appliance is under when housekeeping is being processed. - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 108
(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 target devices. There is a worked example in HP StoreOnce Backup system Summary of Best Practices with Sizing Tool and - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 109
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 transfer is managed entirely by the backup software, multiple streams can - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 110
. 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 known to the - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 to - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 112
is on each replicated virtual tape or StoreOnce NAS share. Copy 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 113
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 3 StoreOnce 4048 4500, 4220 & 1 Shelf HP MSL 4 StoreOnce 4048 4420 HP MSL 4 StoreOnce 4048 4420 & 1 Shelf HP MSL 4 StoreOnce 4048 4420 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 114
G3 6 11 StoreOnce 4048 4420 & 3 Shelves HP ESL G3 6 12 ESL G3 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 - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 115
HP StoreOnce B6200 Backup StoreOnce Backup products running software 3.0.0 and later One couplet Devices Max Addressable Disk Capacity (TB) - assuming Up to 128 2TB drives Max Number Devices (VTL + NAS shares ) 96 Total maximum concurrent streams ( 384 backup/restores/inbound replication - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 116
inbound data and copy 384 768 1152 1536 jobs per service set = 192 StoreOnce 2700, 4500 and 4700 Backup Table 11 Key parameters for HP StoreOnce 2700, 4500 and 4700 Backup StoreOnce Backup products running software 3.8.0 and later Devices Usable Disk Capacity (TB) (With full expansion - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 117
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 expansion - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 Tape Copy Support Supports direct attach - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 120
B6200 Backup system • HP StoreOnce 2700 Backup system • HP StoreOnce 4500 Backup system • HP StoreOnce 4700 Backup system • HP StoreOnce 2620 Backup system • HP StoreOnce 4210/4220 Backup system • HP StoreOnce 4420/4430 Backup system Intended audience This guide is intended for users who install - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - Page 121
, see the following HP websites: • http://www.hp.com • http://www.hp.com/go/ebs • http://www.hp.com/go/connect • http://www.hp.com/go/storage • http://www.hp.com/service_locator • http://www.hp.com/support/manuals • http://www.hp.com/support/downloads Documentation feedback HP welcomes your feedback - HP StoreOnce 4430 | HP StoreOnce Backup System Concepts and Configuration Guidel - 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
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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