HP StoreVirtual 4335 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69
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- HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 1
HP StoreVirtual Storage Remote Copy User Guide Abstract This guide provides information about configuring and using asynchronous replication of storage volumes and snapshots across geographic distances. For the latest version of this guide, see the HP website http://www.hp.com/support/ - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 2
L.P. Confidential computer software. Valid license from HP required for possession, use or copying. 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 - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 3
primary snapshots for volume sets 15 Creating a remote volume 16 Designating an existing volume as a remote volume 16 Creating a new remote volume manually 16 Creating a remote volume while creating a remote snapshot 16 What the system does...17 Creating the first copy 17 Viewing a list of - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 4
the Volume Failover/Failback Wizard 27 Converting a primary volume to a remote volume 27 Using failover to a remote volume 28 Resuming production after failover 28 Synchronizing data after failover 28 Example scenario...29 Returning operations to original primary site 29 Synchronizing the data - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 5
4 Support and other resources 48 Contacting HP...48 Subscription service...48 Rack stability...48 Customer self repair...48 HP Insight Remote Support Software 48 Related information...49 HP websites...49 5 Documentation feedback 50 Glossary...51 Index...57 Contents 5 - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 6
Reproducing data using Remote Copy follows a three-step process: 1. At the production location, create a snapshot of the primary volume. This is called the cluster. Graphical representations of Remote Copy The HP StoreVirtual Centralized Management Console displays special graphical representations - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 7
the primary snapshot copying to the remote snapshot Graphical legend for Remote Copy icons The Graphical Legend window available from the HP StoreVirtual Storage Online Help menu depicts the icons associated with Remote Copy. Figure 3 Icons for Remote Copy in the Graphical Legend window Remote - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 8
where it left off when the link is restored. Planning for Remote Copy Remote Copy works at the management group, cluster, volume, and snapshot levels. Review Table 2 (page 9) for common configurations at these levels. 8 Understanding and planning Remote Copy - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 9
Table 2 Remote Copy, LeftHand OS, and storage systems Storage system level Management groups Remote Copy configuration • Create remote snapshots in the same management group or in a different management group than the primary volume. • If - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 10
Remote Copy schedule Planning is critical. The following issues impact the amount of storage available in the system: • Recurrence • Capacity • Retention Recurrence How often do snapshots and five remote snapshots. The number of snapshots retained refers to 10 Understanding and planning Remote Copy - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 11
remote snapshots n of weeks for primary snapshots x of weeks for remote snapshots Maximum number of snapshots retained n + 2 of primary snapshots x + 2 of remote that only incremental copying is required for remote snapshots. • Review your remote copy schedule to ensure that the frequency of - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 12
group that contains the remote snapshot The remote volume for the remote snapshots Select one of the following options: • Maximum number of snapshots. This number equals completed snapshots only. In-progress snapshots take additional space on the cluster while copying. Also, the system will not - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 13
"Prerequisites for application-managed snapshots" in the HP StoreVirtual Storage User Guide or online help. Creating a remote snapshot You the remote management group. 3. Create a primary snapshot of the primary volume manually to create a single remote copy snapshot. When setting up a schedule to - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 14
Creating the primary snapshot 1. In the Primary Snapshot Setup box, click New Snapshot. If you selected a snapshot to start the process, you do not need to create a new snapshot. 2. (Optional) If you are using the Application Aware Snapshot Manager and want to quiesce the application before creating - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 15
the Details tab, and look at the Snapshot Set field. For information about the requirements for application-managed snapshots, see the HP StoreVirtual Storage User Guide. NOTE: After you create snapshots for a volume set, typically you do not want to delete individual snapshots from the snapshot set - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 16
as a remote volume. • Create a new remote volume manually. • Create a new remote volume during creation of a remote snapshot. • Use the Management Groups, Clusters, and Volumes wizard in the "Getting Started" launch pad. See the HP StoreVirtual Storage User Guide for details on working through the - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 17
site. 1. Configure both the primary and remote management groups. 2. Create the first copy of the data locally over the gigabit Ethernet. 3. Ship the storage systems for the remote site and install the remote management group just as you configured it in the primary site. 4. Allow adequate time - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 18
remote bandwidth, selecting Defaults allows you to choose from a list of common network types, listed in Table 5 (page 18). Table 5 Guide to remote bandwidth priority settings Network type Fractional T1 (1/6) Fractional T1 (1/2) T1 Bonded T1 (2) Bonded T1 (4) Ethernet T3 Fast-Ethernet, 100BaseT - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 19
• Custom setting- The custom setting for remote bandwidth defaults to 32,768 KB, or about 4 MB. Use the calculation tool to identify a desired bandwidth setting. For example, if you have a T1 line, and you want to set the remote bandwidth to 12% of that capacity, you can use the calculation tool to - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 20
snapshots, select a snapshot, click the Details tab, and then view the Snapshot Set field. For information about snapshot sets, see the HP StoreVirtual Storage User Guide. HP recommends that you keep or delete all snapshots for a volume set. If you need to roll back to a snapshot, you want to - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 21
Statistic Source Info section Primary Mgmt Group Primary Snapshot Remote Mgmt Group Remote Snapshot Original Mgmt Group Original Snapshot Status Manual | Scheduled Snapshot Scanned (%) Fields The management group containing the primary volume and snapshot The primary snapshot The management group - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 22
format is MM/DD/YYYY HH:MM:SS [AM/PM] Elapsed Time The number of days, hours, minutes, and seconds since the copy began processing. The completed copies or in-progress copies not yet calculated. Est. Time Remaining The number of days, hours, minutes, and seconds estimated to remain in the copy - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 23
of a volume manually, you can remote snapshots. • If you are performing daily remote copies, schedule the remote retention interval for the primary snapshot, either number of days or number of snapshots. You can retain up to snapshots" in the HP StoreVirtual Storage User Guide. If the Application - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 24
volume sets, see the HP StoreVirtual Storage User Guide. The volume that you retention interval for the primary snapshot, either number of days or number of snapshots. You can retain up to list of all volumes in the volume set. 13. Review the information about the volume set and the remote copies - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 25
16. Click Update Pending Table Below to add this remote volume setup to the list at the bottom of the window. The system selects the next volume in the Primary Volume list at the top of the window. 17. Select the remote Volume Name for the selected volume. 18. Click Update Pending Table Below to add - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 26
in the schedule are the current volumes in the volume set. For more information, see "Scheduling snapshots for volume sets" in the HP StoreVirtual Storage User Guide. To edit the remote snapshot schedule: 1. In the navigation window, select the primary volume that has the schedule you want to edit - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 27
review the Snapshot Set field. For more information about volume sets and snapshot sets, see the HP StoreVirtual Storage User Guide recovered, or newly configured, production site primary volume. NOTE: move the primary volume and click Next. 6. Perform one of the following actions, depending upon the - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 28
.exe to change the resulting volume's attributes. For more information, see the HP StoreVirtual Storage User Guide or online help. Resuming production after failover After failover occurs, three scenarios exist for resuming production: • Failback returns operations to the original primary site it is - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 29
primary volume. Remotevol_1ActPrimarySS_1 Returns the remote management group to its original configuration. In addition, you capture the 1:33 to 2:00 p.m. data. Synchronize the data Resuming production after failover 29 - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 30
, to synchronize the snapshots, remote copy the remote snapshot back to the original primary volume. Creating a new primary volume at the original production site If the original primary volume is not available, designate a new primary volume, synchronize the data from the acting primary volume, and - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 31
rolled back until you convert the remote volume into a primary volume and then perform the steps in "Rolling back a primary volume" (page 30). If a information about volume sets and snapshot sets, see the HP StoreVirtual Storage User Guide or online help. Using remote snapshots for data migration - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 32
shared knowledge between those groups. Best practice for disassociating management groups NOTE: Do this only if a group no longer exists, or if instructed by HP Support. 1. Log in to both management groups that you want to disassociate. 2. In the navigation window, select the remote management group - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 33
. Figure 8 (page 34) illustrates this simple high availability configuration. • Configure primary and backup application servers. During normal operation, the production application server reads and writes to the primary volume. • Set up a schedule for copying remote snapshots to the backup location - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 34
application server. The remote volume and remote snapshots become acting primary, and the backup application server becomes the acting production application server, accessing data from the acting primary volume. Figure 9 High availability configuration during failover Data availability if the - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 35
following process occurs: 1. A script or other application monitoring the production application server discovers that the primary volume is not available. A see the HP StoreVirtual LeftHand OS Command Line Interface User Guide and the sample scripts available at http://www.hp.com/go/ - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 36
the HP StoreVirtual Storage User Guide. Example configuration Figure 8 (page 34) uses three storage systems per cluster. However, this scenario can use any number of storage systems. For information about creating clusters and volumes, see the HP StoreVirtual Storage User Guide. • In the production - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 37
. This eliminates the backup window on your primary volumes, and ensures that you have copies of your data in the remote site on storage systems as well as on tape. Configuration for affordable disaster recovery To configure affordable disaster recovery, create remote snapshots of your volumes in - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 38
Figure 12 Affordable disaster recovery example configuration How this works for affordable disaster recovery If the storage systems in your primary location fail or volumes become unavailable, the off-site location contains the most recent remote snapshots. • Use the remote snapshots to - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 39
can access it more efficiently. Figure 13 Restoring from a remote volume In Figure 13 (page 39) note the volume labeled Primary Snapshot in the Production Site. It originated as a read only backup, but is brought into use as an acting primary. Figure 14 Restoring from tape backup Using Remote - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 40
creating remote snapshots accordingly. If you do not want a large number of remote snapshots to accumulate on your remote volume, you can use your remote volume against storage system failure. Example configuration • In the production location, create a cluster of three storage systems, all with - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 41
, you can quickly roll back a volume to a previous snapshot without accessing off-site backups. • When you create a schedule for Remote Copy, specify the number of primary and remote snapshots that you want to retain. You can retain primary snapshots to facilitate easy rollback of the primary volume - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 42
of space that is used in the cluster of storage systems. Balance the number of snapshots to retain with the amount of space primary and remote snapshots. This ensures that you have copies of the same number of snapshots in your primary and remote locations. Any snapshots destroyed during rollback - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 43
Figure 16 nondestructive rollback example How this configuration works for nondestructive rollback You can choose to roll back either the primary snapshot or the remote snapshot. Rolling back one of the snapshots requires that you delete more recent snapshots of that volume. The other volume retains - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 44
Figure 17 Nondestructive rollback from the primary snapshot • To roll back the remote snapshot, you must first make the remote volume into a primary volume. This stops scheduled creation of remote snapshots, which may jeopardize your high availability, disaster recovery, or routine backup strategies - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 45
the primary volume that you want to roll back by creating a one-time (manual) remote snapshot of it. 2. Roll back the volume. Before roll back, application server to another without interrupting the production application server. This capability supports a number of uses such as data mining - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 46
for data migration Suppose you want to create a complete copy of a volume for an application to use in a different location. 1. Configure a cluster of storage systems in the new location to contain the copied volume. 2. Create a one-time remote snapshot of the volume onto the cluster in the new - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 47
Figure 20 Configuration after data migration Using Remote Copy for data migration or cloning 47 - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 48
://www.hp.com/support Before contacting HP, collect the following information: • Product model names and numbers • Technical support registration number (if applicable) • Product serial numbers • Error messages • Operating system type and revision level • Detailed questions Subscription service HP - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 49
guide from the Manuals page: http://www.hp.com/support/StoreVirtualManuals HP websites For additional information, see the following HP websites: • http://www.hp.com • http://www.hp.com/go/storage • http://www.hp.com/service_locator • http://www.hp.com/support/manuals • http://www.hp.com/support - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 50
documentation that meets your needs. To help us improve the documentation, send any errors, suggestions, or comments to Documentation Feedback ([email protected]). Include the document title and part number, version number, or the URL when submitting your feedback. 50 Documentation feedback - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 51
A type of network bonding in which the logical interface performs load balancing of data transmission. application-managed snapshot Snapshot of volumes, snapshots, storage systems, and iSCSI sessions in the HP StoreVirtual Storage. It provides an overview of the storage network broken out - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 52
full provisioning ghost storage system Graphical Legend hardware reports hostname HP StoreVirtual Centralized Management Console performance and health of the storage system, its drives, and configuration. The hostname on a storage system is the user-definable name that displays below the storage - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 53
to protect data in HP StoreVirtual Storage. Graphically depicts the status of each storage system. Storage systems on the network are either available or part of a management group. Network Time Protocol The primary volume that fails and then is returned to service. An overprovisioned cluster occurs - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 54
HP StoreVirtual LeftHand OS Command Line Interface. Striped data is stored across all disks in the cluster. You might change the configuration of a volume, for example, change data protection level, add a storage system, or remove a storage site fails, customers can manually recover quorum in the - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 55
user-designated location in which storage systems are installed. Multi-Site SAN configurations have multiple sites with storage threshold is reached. HP StoreVirtual Application Integration Solution Also, you can manually synchronize if necessary to support a StorageGroup: one for mailbox data and one for - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 56
writable space The size of the virtual device communicated to the operating system and the applications. HP StoreVirtual VSS Provider is the hardware provider that supports the Volume Shadow Copy Service on the HP StoreVirtual Storage. Volume Shadow Copy Service See temporary space. 56 Glossary - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 57
during, 34 planning, 26 resuming production after, 28 scripting for, 27 setting up new site, 30 synchronizing data after, 28 timeline for, 29 to backup application server, 35 with Remote Copy, 36 G glossary for LeftHand OS software and HP StoreVirtual Storage, 51 graphical representations of Remote - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 58
36 HP technical support, 48 I icons for Remote Copy, 6 Insight Remote Support software 17 using for first copy, 17 58 Index production resuming after failover, 28 R rack stability retention policy, 11 remote support software, 48 remote volumes adding, 16 creating manually, 16 creating on the fly - HP StoreVirtual 4335 | 10.5 HP StoreVirtual Storage Remote Copy User Guide (AX69 - Page 59
failover, between acting primary volumes and original primary volumes, 29 T technical support HP, 48 service locator website, 49 timeline of failover, 29 U uses for Remote Copy rack stability, 48 websites customer self repair, 48 HP, 49 HP Subscriber's Choice for Business, 48 product manuals, 49 59
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HP StoreVirtual Storage Remote Copy User
Guide
Abstract
This guide provides information about configuring and using asynchronous replication of storage volumes and snapshots across
geographic distances.
For the latest version of this guide, see the HP website
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HP Part Number: AX696-96247
Published: March 2013
Edition: 7