HP StoreVirtual 4000 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96
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- HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 1
HP LeftHand 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/LeftHandManuals. - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 2
for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 4
works for high availability 34 Best practices...36 Remote snapshots with volume replication 36 Example configuration 36 How it works...36 Achieving affordable disaster recovery 37 Configuration for affordable disaster recovery 37 How this works for affordable disaster recovery 38 Best - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 6
corporate headquarters in Chicago runs the corporate accounting application and stores the resulting data. The designated backup site is in Detroit and cluster. Graphical representations of Remote Copy The HP LeftHand Centralized Management Console displays special graphical representations of Remote - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 7
Copy icons The Graphical Legend window available from the HP LeftHand Storage Online Help menu depicts the icons associated with storage systems within a cluster in combination with asynchronous Remote Copy on a different cluster of storage systems creates a robust, high-availability configuration - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 8
distribution Volume clone How it works Remote Copy stores remote snapshots on a machine in a geographically that is, snapshots save only those changes in the volume since the last snapshot was created. Review Table 2 (page 9) for common configurations at these levels. 8 Understanding - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 9
Remote Copy, SAN/iQ, and storage systems Storage system level Management groups Remote Copy configuration • Create remote snapshots in the of the connection between management groups containing primary and remote volumes changes. Clusters • Create remote snapshots in the same cluster or in - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 10
schedule Planning is critical. The following issues impact the amount of storage available in the system: • Recurrence • Capacity • Retention Recurrence volume, it takes longer to copy. The second remote snapshot copies only changes made to the volume since the first remote snapshot was taken. You - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 11
the remote snapshot schedule. Best practices • Retain at least two primary snapshots to ensure that only incremental copying is required for remote snapshots. • Review your remote copy schedule to ensure that the frequency of the remote copies correlates to the amount of time required to complete - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 12
Table 4 Scheduled Remote Copy planning checklist Configuration category Scheduled snapshot Start time Characteristic • Start date (mm/dd/yyyy) for the schedule to begin • Start time (mm:hh:ss) for the schedule to - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 13
the requirements for application-managed snapshots, see the HP LeftHand 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 14
to return to the New Remote Snapshot window. The information for the primary snapshot is pre-filled. For example, the text for Snapshot Name changed from "Create Primary Snapshot" to "HdqtrsLogs_SS_1". 6. In the Remote Snapshot Setup box, select the remote management group and volume. If you need to - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 15
For information about the requirements for application-managed snapshots, see the HP LeftHand Storage User Guide. NOTE: After you create snapshots for a volume set, the snapshots. If you deselect the option, the system creates a point-in-time snapshot of each volume listed. 9. (Optional) Edit the - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 16
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 LeftHand Storage User Guide for details on working through the wizards - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 17
from the primary volume to the remote volume are incremental. Use the PrimeSync method of Remote Copy to configure a temporary management group, create the first copy locally, ship the temporary storage system, and then copy locally to the remote target. Use this method if you have the primary (Site - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 18
. 8. Set up the desired Remote Copy relationship, such as configuring a schedule to create remote snapshots of the volume from the primary 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 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 19
Table 5 Guide to remote bandwidth priority settings (continued) Network type OC-12 Gigabit- Tasks, and then select Cancel Remote Snapshot. 5. Click OK. Editing a remote snapshot To change the description and change the server assignment of a remote snapshot: 1. Log in to the management group that - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 20
the management group. You can also receive event notification through email and SNMP traps. For information about configuring event notification, see the HP LeftHand Storage User Guide. Monitoring details from the Remote Snapshots feature You can view information about each remote snapshot in both - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 22
Table 6 Fields for Remote Snapshot Details window (continued) Statistic Fields State The current state of the copy process. Valid values are Started, Copying, Stalled, and Complete. Time Start Time Time Zone date and time copy started. The field format is MM/DD/YYYY HH:MM:SS [AM/PM] Elapsed - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 23
remote snapshots In addition to taking remote snapshots of a volume manually, you can set up a schedule to take snapshots and " in the HP LeftHand Storage User Guide. If the Application Aware Snapshot Manager is not installed, the SAN/iQ software allows the creation of a point-in-time snapshot - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 24
associated volume. For information about volume sets, see the HP LeftHand Storage User Guide. The volume that you select when you create the Found window opens with a list of all volumes in the volume set. 13. Review the information about the volume set and the remote copies the schedule will create. - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 26
to remote snapshot a volume, you can change the following items: • Schedule-Description, start schedules to snapshot volume sets" in the HP LeftHand Storage User Guide. To edit the remote snapshot schedule: points: • The location and structure of management groups and clusters • Configuration - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 27
and review the Snapshot Set field. For more information about volume sets and snapshot sets, see the HP LeftHand Storage User Guide. Using , resynchronize data between the acting primary and the recovered, or newly configured, production site primary volume. NOTE: When failing over a primary volume - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 28
use diskpart.exe to change the resulting volume's attributes. For more information, see the HP LeftHand Storage User Guide or online help. flow for restoring or recovering data and resuming the original Remote Copy configuration is different for each scenario. Use these procedures when you are - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 29
into the remote volume. This automatically creates a snapshot of the acting 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 30
Turn the backup site into the new production site and designate a different backup site. The steps are similar to those for initially configuring Remote Copy. 1. Create a remote snapshot or a timetable for a scheduled remote snapshot on the acting primary volume. 2. Make a new remote volume on the - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 31
information about volume sets and snapshot sets, see the HP LeftHand Storage User Guide or online help. Using remote snapshots for data migration a remote snapshot. • Create a server for client access. • Configure clients to access the remote snapshot. TIP: Consider using the SmartClone feature - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 33
data. If using Remote Copy for business continuance, data is stored off-site and is readily available in the event of a site . Figure 8 (page 34) illustrates this simple high availability configuration. • Configure primary and backup application servers. During normal operation, the production - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 34
, 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 primary volume or production application server fails If either the primary volume or - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 35
application server. For information about scripting, see the HP LeftHand Storage Command Line Interface User Guide and the sample scripts available at http://www.hp.com/go/P4000downloads. 3. Because the backup application server was configured to access the remote (now primary) volume, operation - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 36
will still be available. For more information about Network RAID and data protection levels, see the chapter "Provisioning Storage" in the HP LeftHand Storage User Guide. Example configuration Figure 8 (page 34) uses three storage systems per cluster. However, this scenario can use any number of - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 37
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 an off-site location. In addition, you - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 39
2. Configure application servers to access the primary volume, or if network connections are not fast enough to facilitate reading and writing to the off-site location, - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 40
volume replication To prevent data loss, reinforce Remote Copy with Network RAID within the cluster of storage systems at the primary geographic site. With Network RAID configured, a single storage system can be offline, and your primary volume remains intact. At the backup location, you can - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 41
the application before creating remote snapshots. • [Optional] Create routine tape backups of the remote snapshots. Configuration diagram Figure 15 Off-site backup and recovery example configuration How this configuration works for off-site backup Depending on how long you retain the copies of the - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 42
amount of space that is used in the cluster of storage systems. Balance the number of snapshots to retain with the backup is created, you can access the data without going to the backup tape. Example configuration • Retain three primary snapshots. This enables you to roll the primary volume back, yet - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 44
may jeopardize your high availability, disaster recovery, or routine backup strategies. Figure 18 (page 45) shows rollback of the remote snapshot. 44 Sample Remote Copy configurations - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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, scheduled to another without interrupting the production application server. This capability supports a number of uses such as data mining or content - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 46
works 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 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 47
Figure 20 Configuration after data migration Using Remote Copy for data migration or cloning 47 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 48
the installation or upgrade of your product and to enable enhanced delivery of your HP Warranty, HP Care Pack Service or HP contractual support agreement. HP Insight Remote Support supplements your monitoring, 24x7 to ensure maximum system availability by providing intelligent event diagnosis - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 49
in this guide from the Manuals page: http://www.hp.com/support/LeftHandManuals 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - 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 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 51
NIC in the bond until the preferred NIC resumes operation. At that point, data transfer resumes on the preferred NIC. Adaptive Load Balancing A type Configuration Summary The Configuration Summary displays an overview of the volumes, snapshots, storage systems, and iSCSI sessions in the HP - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 52
virtual items displayed in the CMC • Hardware tab - displays the icons that represent the physical storage units. Hardware reports display point-in-time statistics about the performance and health of the storage system, its drives, and configuration. The hostname on a storage system is the user - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 53
stored as parity distributed across the disks. Parity allows the storage system to use more disk capacity for data storage designation assigned by the administrator in the HP P4000 Centralized Management Console. /all of the application servers. In configurations that do not designate a primary site - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 54
the Cliq 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 system. Because of your change, the pages in the volume must be reorganized - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 55
pack split mirror standard cluster storage server stripe synchronize target secret temporary space thin provisioning trap Trap Community String unicast VIP virtual IP address virtual machine virtual manager volume volume lists Shared snapshots occur when a clone point is created from a newer - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 56
volumes make a volume set. The size of the virtual device communicated to the operating system and the applications. HP P4000 VSS Provider is the hardware provider that supports the Volume Shadow Copy Service on the HP P4000 SAN Solution. Volume Shadow Copy Service See temporary space . 56 Glossary - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 57
, 19 changing backup site into new production site, 30 primary volume into remote volume, 27 clone of volume, 8 configuration for affordable rollback, 42 for off-site backup and recovery, 41 configuring failover, 26 Remote Copy, 8 contacting HP, 48 copying using Remote Copy, 13 creating first remote - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 58
and failover, 36 and Remote Copy, 36 best practices, 36 configuration diagram, 33 configuration for, 33 configuration of Remote Copy, 36 HP technical support, 48 I icons for Remote Copy, 6 Insight Remote Support software, 48 M management groups disassociating, 32 disassociating PrimeSync, 17 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Remote Copy User Guide (AX696-96 - Page 59
mirrors, creating, 31 Subscriber's Choice, HP, 48 support software, remote, 48 synchronizing data after original primary volumes, 29 T technical support HP, 48 service locator website, 49 timeline of failover, , 24 failing over from, 27 volume type changing primary into remote, 27 volumes cloning, 8
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HP LeftHand 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: AX696-96197
Published: November 2012
Edition: 6