Veritas NetBackup™ Snapshot Client Administrator's Guide
- Snapshot Client features
- About snapshot basics
- Off-host backup overview
- Off-host backup methods
- About alternate client backup
- Snapshot Client requirements
- Policy configuration
- Selecting the snapshot method
- Configuration parameters for Snapshot Client
- About using alternate client backup
- Configuring alternate client backup
- Policy configuration tips
- About disabling snapshots
- FlashBackup configuration
- Instant Recovery configuration
- About Instant Recovery
- About sizing the cache for Instant Recovery copy-on-write snapshots
- About configuring VxVM
- About storage lifecycle policies for snapshots
- Network Attached Storage (NAS) snapshot configuration
- Configuration of software-based snapshot methods
- Software-based snapshot methods
- Cache device requirements
- About VxFS_Checkpoint
- About VxVM
- About FlashSnap
- About VVR
- About VSS
- Software-based snapshot methods
- Support for Cluster Volume Manager Environments (CVM)
- Configuration of snapshot methods for disk arrays
- About the new disk array snapshot methods
- Disk array configuration tasks
- OS-specific configuration tasks
- About VSS configuration (Windows)
- About EMC CLARiiON arrays
- Configuring NetBackup to access the CLARiiON array
- Configuring a NetBackup policy for a CLARiiON array method
- About EMC Symmetrix arrays
- About configuration for EMC_TimeFinder_Mirror
- About configuration for EMC_TimeFinder_Clone
- About HP EVA arrays
- Verifying connectivity from clients to array using SSSU 5.0
- About IBM DS6000 and DS8000 arrays
- Configuring NetBackup to access the IBM DS6000 or DS8000 array
- About IBM DS4000 array
- About Hitachi SMS/WMS/AMS, USP/NSC, USP-V/VM
- Hitachi array software requirements
- About HP-XP arrays
- About array troubleshooting
- Troubleshooting issues pertaining to all arrays
- Troubleshooting IBM DS6000 and DS8000 arrays
- Troubleshooting IBM4000 arrays
- Troubleshooting Hitachi arrays
- Notes on Media Server and Third-Party Copy methods
- Backup and restore procedures
- About restores from a FlashBackup backup
- Instant Recovery restore features
- About Instant Recovery: block-level restore
- About Instant Recovery: file promotion
- About Instant Recovery: Fast File Resync (Windows clients only)
- About Instant Recovery: point in time rollback
- About configurations for restore
- About restoring from a disk snapshot
- Logging directories for UNIX platforms
- Logging folders for Windows platforms
- FlashBackup and status code 13
- Appendix A. Managing nbu_snap (Solaris)
- Appendix B. Overview of snapshot operations
- Appendix C. NetBackup integration with CloudPoint for snapshot managment
Instant Recovery restrictions
Note the following restrictions:
For snapshots using Storage Checkpoints, Instant Recovery supports file systems with the Version 4 disk layout or later. Older disk layouts must be upgraded to Version 4 or later.
No-data Storage Checkpoints (those containing file system metadata only) are not supported.
Instant Recovery snapshots must not be manually removed or renamed, otherwise the data cannot be restored.
Instant Recovery does not support the VxVM, FlashSnap, and VVR snapshot methods when used with VxVM volume sets.
On Linux, Instant Recovery is not supported by disk-array based snapshot methods.
For Instant Recovery backups of data that is configured on VxVM volumes on Windows, the VxVM volume names must be 12 characters or fewer. Otherwise, the backup fails.
Any media server that is used in an Instant Recovery backup must have full server privileges.
Instant Recovery restores can fail from a backup that a FlashSnap off-host backup policy made.
From a policy that was configured with themethod and with enabled, the backups that were made at different times may create snapshot disk groups with the same name. As a result, only one snapshot can be retained at a time. In addition, NetBackup may not be able to remove the catalog images for the snapshots that have expired and been deleted. It appears that you can browse the expired snapshots and restore files from them. But the snapshots no longer exist, and the restore fails with status 5.
For Instant Recovery, Veritas recommends that a primary volume be backed up by a single Instant Recovery policy. If the same volume is backed up by two or more Instant Recovery policies, conflicts between the policies may occur during snapshot rotation. Data loss could result if the policies are configured for snapshots only (if the policies do not back up the snapshots to separate storage devices).
Consider the following example: Two policies use the same snapshot device (or VxFS storage checkpoint) to keep Instant Recovery snapshots of volume_1.
Instant Recovery policy_A creates a snapshot of volume_1 on the designated snapshot device or storage checkpoint.
When Instant Recovery policy_B runs, it removes the snapshot made by policy_A from the snapshot device or storage checkpoint. It then creates its own snapshot of volume_1 on the snapshot device or storage checkpoint. The snapshot created by policy_A is gone.
Even if each policy has its own separate snapshot devices, conflicts can occur when you browse for restore. Among the available snapshots, it may be difficult to identify the correct snapshot to be restored. It is therefore best to configure only one policy to protect a given volume when you use the Instant Recovery feature of NetBackup.
Giving full server privileges to the media server
Configuring a policy for Instant Recovery
About sizing the cache for Instant Recovery copy-on-write snapshots
Modifying the VxVM or FlashSnap resync options for point in time rollback
Instant Recovery for databases
About storage lifecycle policies for snapshots