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HP StorageWorks P4000 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/manuals. Part Number: AX696-96032...
Monitoring details from the Remote Snapshots feature ............. 26 Viewing information in the Remote Snapshots tab ............. 26 Viewing the status in the Remote Snapshot Details window ..........26 Scheduling remote snapshots ..................... 29 Best practices for scheduling remote snapshots ................29 P4000 Remote Copy user guide...
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Creating the schedule ....................... 29 Creating the schedule for volume sets ................... 30 Timing for a scheduled remote snapshot ................31 What the system does ......................32 Pausing and resuming scheduled snapshots .................. 32 Pause a schedule ........................ 32 Resume a schedule ......................32 Editing the schedule to remote snapshot a volume .................
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New and changed information in this edition ................60 Related information ........................60 HP websites ........................60 Typographic conventions ......................60 Customer self repair ........................61 HP product documentation survey ....................62 Glossary .................... 63 Index ....................71 P4000 Remote Copy user guide...
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Figures Basic flow of Remote Copy ..................9 Icons depicting the primary snapshot copying to the remote snapshot ......10 Icons for Remote Copy in the Graphical Legend window ..........11 Remote copy in progress ..................19 Calculating a custom value for setting remote bandwidth ..........24 Viewing remote snapshot details ................
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Snapshot retention policy and maximum number of retained snapshots ......14 Scheduled Remote Copy planning checklist ..............15 Fields for Remote Snapshot Details window ..............27 Timeline of failover ....................36 Creating snapshots of data to synchronize ..............37 Document conventions ..................... 60 P4000 Remote Copy user guide...
Create a remote volume at the remote location, and then create a remote copy of the primary snapshot to the remote volume. The system copies data from the primary snapshot to the remote snapshot. Figure 1 Basic flow of Remote Copy P4000 Remote Copy user guide...
Remote Copy can be used on the same site, even in the same management group and cluster. Graphical representations of Remote Copy The HP StorageWorks P4000 Centralized Management Console displays special graphical representations of Remote Copy. Copying the primary snapshot to the remote snapshot When the primary snapshot is copying to the remote snapshot, the CMC depicts the process with a moving graphic of pages from the primary to the remote snapshot.
You can move the copy of distribution the volume to the location where it is needed. Remote Copy creates copies of the original volume for use by other Volume clone application servers. P4000 Remote Copy user guide...
Benefits of Remote Copy Remote Copy maintains the primary volume’s availability to application servers. Snapshots on the primary volume are taken instantaneously, and are then copied to remote snapshots in the off-site location. Remote Copy operates at the block level, moving large amounts of data much more quickly than file system copying.
To test the copy time: Create a remote snapshot of the primary volume. Wait for the copy to finish. Create another remote snapshot of the primary volume. P4000 Remote Copy user guide...
Track the time required to complete the second remote snapshot. NOTE: This is the minimum amount of time that you should allow between scheduled copies. Check the remote bandwidth setting for the other management group by using the Edit Management Group command. This setting affects the time required to copy a remote snapshot. Capacity Does the cluster that contains the remote volume have sufficient space to accommodate scheduled snapshots?
Maximum number of snapshots (#) Retention Set period of time (minutes, hours, days, or weeks) Remote setup Management group The management group that contains the remote snapshot Volume The remote volume for the remote snapshots P4000 Remote Copy user guide...
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Configuration category Characteristic 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. Retention Also, the system will not delete the last fully synchronized snapshot. For space calculations, figure n+2 where n=maximum number of snapshots.
Although the interface allows you to create volumes and snapshots as you go, that may be a distraction at the time a crucial snapshot is needed. Getting there This procedure takes you to the New Remote Snapshot window where remote copy procedures start. P4000 Remote Copy user guide...
This option requires the use of the VSS Provider. For more information, see the HP StorageWorks P4000 SAN Solution user guide or online help. If the VSS Provider is not installed, use SAN/iQ to create a point-in-time snapshot (not using VSS).
Details tab, and then look at the Snapshot Set field. For information about the requirements for application-managed snapshots, see the HP StorageWorks P4000 SAN Solution user guide or online help. P4000 Remote Copy user guide...
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Select the Application-Managed Snapshot check box. This option requires the use of the VSS Provider. For information about the requirements for application-managed snapshots, see the HP StorageWorks P4000 SAN Solution user guide or online help. This option quiesces VSS-aware applications on the server before SAN/iQ creates the snapshot.
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 StorageWorks P4000 SAN Solution user guide for details on working through the wizards.
Click New Remote Volume. The Management Groups, Clusters, and Volumes wizard opens. For specific help, see the “Getting Started” chapter in the HP StorageWorks P4000 SAN Solution user guide for details on working through the wizards. The wizard uses the information you entered to fill The New Remote Snapshot window when you exit the wizard.
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Remote Copy that goes from primary site A directly to remote site B which maintains that relationship going forward. For more information on PrimeSync, see the “Application Note: SAN/iQ Remote Copy PrimeSync — Creating Initial Copy” at http://www.hp.com/support/manuals. P4000 Remote Copy user guide...
Viewing a list of remote snapshots View a list of remote snapshots associated with management groups, clusters, volumes, or snapshots. In the navigation window, select a cluster to view its list of remote snapshots. Click the Remote Snapshot. The report in the Remote Snapshot tab lists management groups and all the snapshots. The other columns show status information about the remote snapshots.
Details tab, and then view the Snapshot Set field. For information about snapshot sets, see the HP StorageWorks P4000 SAN Solution user guide or online help. 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 roll back each volume in the volume set to its corresponding snapshot.
Alarms window and in the Events category for the management group. You can also receive event notification through email and SNMP traps. For information about configuring event notification, see the HP StorageWorks P4000 SAN Solution user guide. Monitoring details from the Remote Snapshots feature You can view information about each remote snapshot in both the Remote Snapshots tab and in the Remote Snapshot Details window.
Whether the snapshot was created manually or with a scheduled snapshot Snapshot Scanned (%) The percentage complete of the copy process. Values are 0 to 100%. The current state of the copy process. Valid values are Started, Copying, State Stalled, and Complete. Time P4000 Remote Copy user guide...
Statistic Fields Time Zone date and time copy started. The field format is MM/DD/YYYY Start Time HH:MM:SS [AM/PM] The number of days, hours, minutes, and seconds since the copy began Elapsed Time processing. The field format is Xd Xh Xm Xs X. N/A signifies completed copies or in-progress copies not yet calculated.
This option requires the use of the VSS Provider. For more information, see “Requirements for application-managed snapshots” in the HP StorageWorks P4000 SAN Solution user guide. If the VSS Provider is not installed, the SAN/iQ software allows the creation of a point-in-time snapshot.
Snapshot Set field. For information about the requirements for application-managed snapshots, see the HP StorageWorks P4000 SAN Solution user guide or online help. When you first create the schedule, the system stores information about the volume set as it exists at that time.
This option requires the use of the VSS Provider. For more information, see “Requirements for application-managed snapshots” in the HP StorageWorks P4000 SAN Solution user guide. If the VSS Provider is not installed, SAN/iQ allows creation of a point-in-time snapshot (not using VSS).
What the system does If you created a new volume for the remote volume, the system creates a new primary snapshot of the primary volume and a remote snapshot of the remote volume. See “Best practices for scheduling remote snapshots” on page 29. If you selected an existing volume to become the remote volume, the system alerts you that it will create a snapshot to save existing data on the volume.
Click Close to return to the Edit Schedule to a Snapshot Volume window. The updated list of volumes is populated in the Volume Set field. For more information, see “Understanding schedules to snapshot volume sets” in the HP StorageWorks P4000 SAN Solution user guide.
To see associated snapshots, select a snapshot, click the Details tab, and review the Snapshot Set field. For more information about volume sets and snapshot sets, see the HP StorageWorks P4000 SAN Solution user guide or online help. Using scripting for failover Application-based scripting provides the capability for creating, mounting, and deleting snapshots using scripts.
This acting primary volume connects to application servers in order to maintain business continuance or accomplish disaster recovery. Click Finish. The final window of the wizard displays a summary of the actions and a reminder to reconnect your iSCSI sessions. P4000 Remote Copy user guide...
If you promoted a remote application-managed snapshot, use diskpart.exe to change the resulting volume's attributes. For more information, see the HP StorageWorks P4000 SAN Solution 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 restored.
Convert the remote volume into a primary volume. Make the acting primary volume into the remote volume. This creates a snapshot of that volume. Configure a new timetable for the scheduled remote snapshots on the new primary volume. P4000 Remote Copy user guide...
The system allows you to automatically roll back all associated volumes. To see any associated snapshots, select a snapshot, click the Details tab, and then look at the Snapshot Set field. For more information about volume sets and snapshot sets, see the HP StorageWorks P4000 SAN Solution user guide or online help.
The system gives you the option to automatically roll back all associated volumes. To see any associated snapshots, select a snapshot, click the Details tab, and look at the Snapshot Set field. For more information about volume sets and snapshot sets, see the HP StorageWorks P4000 SAN Solution user guide or online help.
Using remote snapshots for data migration and data mining Use remote snapshots to create split mirrors for data mining and data migration. A split mirror is a one-time remote snapshot created from the volume containing the data you want to use or move. Split mirrors are usually created for one-time use and then discarded.
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Click OK. The Edit Management Group window is displayed on top again, and the remote management group you disassociated from is gone from the list. Click OK to return to the navigation window. P4000 Remote Copy user guide...
Set up a schedule for copying remote snapshots to the backup location. If your application server uses multiple volumes that must be in sync, use a script or VSS to quiesce the application before creating remote snapshots. P4000 Remote Copy user guide...
Figure 10 High availability example configuration How this configuration works for high availability If the production application server or volumes become unavailable, application processing fails over to the backup 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.
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For more information see “Synchronizing the data between the acting primary volume and the original primary volume” on page 37. P4000 Remote Copy user guide...
For more information about Network RAID and data protection levels, see the chapter “Provisioning Storage” in the HP StorageWorks P4000 SAN Solution user guide. Example configuration Figure 10 on page 44 uses three storage systems per cluster.
To configure affordable disaster recovery, create remote snapshots of your volumes in an off-site location. In addition, you can create tape backups from the remote snapshots in the off-site location: Designate one or more off-site locations to be the destination for remote snapshots. P4000 Remote Copy user guide...
Set up a schedule for creating remote snapshots in the designated off-site locations. If your applic- ation server uses multiple volumes that must be in sync, use a script to quiesce the application before creating remote snapshots. Create routine tape backups of the remote snapshots in the off-site locations. Figure 14 on page 48 shows an example configuration for disaster recovery.
49 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 16 Restoring from tape backup P4000 Remote Copy user guide...
Best practices Select an optimum recurrence schedule. Select a recurrence schedule for remote snapshots that minimizes the potential for data loss. Any data written to the primary volume since the most recent remote snapshot was created will be unavailable if the primary volume is unavailable. Consider how much data you are willing to lose in the event of an emergency and set the recurrence for creating remote snapshots accordingly.
Depending on how long you retain the copies of the remote snapshots, you can retrieve data directly from recent remote snapshots rather than using tape backups. Otherwise, retrieve data as you normally would from the tape backup. P4000 Remote Copy user guide...
Best practices Retain the most recent primary snapshots in the primary cluster By keeping snapshots on your primary volume, 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.
If the primary volume must be synchronized with other volumes accessed by the same application, consider rolling back the remote volume instead. Figure on page 54 shows rollback of the primary snapshot while leaving the remote snapshots intact. P4000 Remote Copy user guide...
Figure 19 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. Figure 20 on page 55 shows rollback of the remote snapshot.
Using Remote Copy for data migration or cloning Remote Copy allows migration of data from one application server to another without interrupting the production application server. This capability supports a number of uses such as data mining or content distribution. P4000 Remote Copy user guide...
Achieving data migration You can use Remote Copy to make a complete copy (clone) of one or more volumes without interrupting access to the original volumes. This type of data migration allows you to copy an entire data set for use by a new application or workgroup.
Configure the application server in the new location to access the new primary volume. Figure 22 on page 57 shows the migration of data after converting a remote volume into a primary volume. Figure 22 Configuration after data migration P4000 Remote Copy user guide...
HP. It is integrated with HP Systems Insight Manager. A dedicated server is recommended to host both HP Systems Insight Manager and HP Insight Remote Support Advanced. Details for both versions are available at: http://h18004.www1.hp.com/products/servers/ management/insight-remote-support/overview.html P4000 Remote Copy user guide...
You can find these documents from the Manuals page of the HP Business Support Center website: http://www.hp.com/support/manuals In the Storage section, click Disk Storage Systems and then select P4000 SAN Solutions. HP websites For additional information, see the following HP websites: http://www.hp.com...
Some parts do not qualify for CSR. Your HP-authorized service provider will determine whether a repair can be accomplished by CSR. For more information about CSR, contact your local service provider, or see the CSR website: http://www.hp.com/go/selfrepair This product has no customer replaceable components. P4000 Remote Copy user guide...
HP product documentation survey Are you the person who installs, maintains, or uses this HP storage product? If so, we would like to know more about your experience using the product documentation. If not, please pass this notice to the person who is responsible for these activities. Our goal is to provide you with documentation that makes our storage hardware and software products easy to install, operate, and maintain.
Command-line interface for the SAN/iQ software. cluster A cluster is a grouping of storage systems that create the storage pool from which you create volumes. Centralized Management Console. See HP StorageWorks P4000 Centralized Management Console. P4000 Remote Copy user guide...
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SNMP data. Configuration The Configuration Summary displays an overview of the volumes, snapshots, Summary storage systems, and iSCSI sessions in the HP StorageWorks P4000 SAN Solution. It provides an overview of the storage network broken out by management groups. data center Also known as a “Site.”...
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Contain storage systems that reside in two or more sites Contain storage systems that span subnets Contain multiple VIPs. The cluster can have a single site, and the multiple VIPs make it a multi-site cluster. P4000 Remote Copy user guide...
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Synchronous replication, mirroring or parity protection on a volume-by-volume basis. Protecting data for a volume across all storage systems in the cluster. Network RAID-10, 10+1 or 10+2 is required to protect data in an HP P4000 SAN solution. network window Graphically depicts the status of each storage system.
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The system can keep track of several configuration changes at once. This means you can change configurations, even while a volume is in the midst of a different reconfiguration. P4000 Remote Copy user guide...
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Use traps to have an SNMP tool send alerts when a monitoring threshold is reached. solution pack HP StorageWorks P4000 Windows Solution Pack split mirror A split mirror is a remote snapshot whose relationship to the primary volume has been severed. Split mirrors are usually created for one-time use and then discarded.
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Not used in release 8.0 and later. volume size The size of the virtual device communicated to the operating system and the applications. Volume Shadow Copy Service P4000 Remote Copy user guide...
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VSS Provider HP StorageWorks P4000 VSS Provider is the hardware provider that supports the Volume Shadow Copy Service on the HP P4000 SAN Solution. writable space temporary space Glossary...
Remote Copy, for affordable disaster recovery, document for data migration, conventions, for high availability, related information, for nondestructive rollback, documentation for off-site backup and recovery, HP website, providing feedback, P4000 Remote Copy user guide...
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Remote Copy, best practices, configuration diagram, configuration for, glossary using Remote Copy for, for SAN/iQ software and HP StorageWorks P4000 SAN, graphical representations of Remote Copy, pausing scheduled snapshots, planning failover, help remote copy schedules, obtaining,...
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Remote Copy and primary volumes, volume type Remote Copy and remote volumes, changing primary into remote, volumes cloning, cloning and data migration, scheduled snapshots, synchronizing data after failover, pausing or resuming, schedules, planning Remote Copy, P4000 Remote Copy user guide...
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websites customer self repair, HP Subscriber's Choice for Business, product manuals,...