Veritas NetBackup™ Snapshot Client Administrator's Guide
- Introduction
- Snapshot Client features at a glance
- Snapshot Client features
- About snapshot basics
- Benefits of copy-on-write versus mirror
- About local backup of a snapshot
- Off-host backup overview
- Off-host backup methods
- Snapshot Client requirements
- Snapshot Client terminology
- Snapshot Client assistance
- About open file backups for Windows
- Installation
- Policy configuration
- Notes on Snapshot Client policies
- Configuring a Snapshot Client policy
- Backup Selections tab options when configuring a policy
- Off-host backup configuration options
- Automatic snapshot selection
- Selecting the snapshot method
- Snapshot methods
- Configuration parameters for Snapshot Client
- Cache device path parameter
- Delay in seconds between disk group split retries parameter
- IBC receive timeout parameter (seconds)
- IBC send timeout parameter (seconds)
- Keep snapshot after backup parameter
- Maximum number of volumes to resynchronize concurrently parameter
- Maximum Snapshots parameter (Instant Recovery only)
- Number of times to retry disk group split parameter
- Provider Type parameter
- Resynchronize mirror in background parameter
- Snapshot Attribute parameter
- Sync I/O delay in milliseconds parameter (UNIX only)
- Sync region size in MB parameter (UNIX only)
- Wait for mirror sync completion parameter
- Important note on VSS and disk arrays
- Synchronize mirror before the backup parameter
- Snapshot Resources
- Configuring backup scripts
- About using alternate client backup
- Configuring alternate client backup
- Policy configuration tips
- About disabling snapshots
- FlashBackup configuration
- Instant Recovery configuration
- About Instant Recovery capabilities
- Instant Recovery requirements
- Instant Recovery restrictions
- Giving full server privileges to the media server
- About Instant Recovery
- Configuring a policy for Instant Recovery
- About sizing the cache for Instant Recovery copy-on-write snapshots
- About configuring VxVM
- Modifying the VxVM or FlashSnap resync options for point in time rollback
- Instant Recovery for databases
- About storage lifecycle policies for snapshots
- Network Attached Storage (NAS) snapshot configuration
- Configuration of 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
- EMC CLARiiON software requirements for UNIX
- Veritas support for VSS Snapshot and EMC CLARiiON
- Diagram of installed software for EMC CLARiiON
- Verifying connectivity from client to array
- About resolving host names on the network
- Configuring NetBackup to access the CLARiiON array
- Adding clients to a CLARiiON storage group
- Configuring for EMC_CLARiiON_SnapView_Clone
- Creating a clone private LUN with the EMC Navisphere Web interface
- Creating a clone group and select a LUN as source
- Adding clone LUNs to the clone group
- Obtaining the device identifier for each source and clone LUN
- About configuration for EMC_CLARiiON_SnapView_Snapshot
- Configuring a reserved LUN pool for the storage processors
- Configuring a NetBackup policy for a CLARiiON array method
- Common CLARiiON array configuration problems
- About EMC Symmetrix arrays
- EMC Symmetrix DMX software requirements
- Clone emulation flag can cause snapshots to fail
- EMC snapshot operation fails
- Support for EMC Symmetrix with Volume Shadow Copy Service
- Prerequisites for using EMC Symmetrix disk arrays
- Configuring NetBackup clients to use EMC Symmetrix
- About configuring NetBackup to access the Symmetrix array
- About configuration for EMC_TimeFinder_Mirror
- About configuration for EMC_TimeFinder_Clone
- About configuration for EMC_TimeFinder_Snap
- Configuring a policy for EMC_TimeFinder methods
- About HP EVA arrays
- Prerequisites for working with HP EVA arrays
- HP EVA software requirements for UNIX
- Diagram of installed software for HP EVA
- Veritas support for VSS Snapshot and HP EVA
- Verifying connectivity from clients to array using SSSU 5.0
- Configuring NetBackup to access the EVA array
- Configuring a NetBackup policy for an HP EVA array method
- HP EVA restrictions
- About IBM DS6000 and DS8000 arrays
- IBM DS6000 and DS8000 software requirements
- Preconfiguration for IBM arrays
- Configuring NetBackup to access the IBM DS6000 or DS8000 array
- Configuring the IBM array for NetBackup
- Using DSCLI commands to obtain unique IBM identifiers
- Configuring a NetBackup policy for IBM_DiskStorage_FlashCopy
- For further reference on IBM arrays
- About IBM DS4000 array
- About Hitachi SMS/WMS/AMS, USP/NSC, USP-V/VM
- Hitachi array software requirements
- Preconfiguration for Hitachi
- About communication between NetBackup and the Hitachi array
- Determining if the Hitachi command devices are visible
- About configuring the Hitachi array for NetBackup
- Obtaining the Hitachi array serial number and the unique device identifiers
- Configuring a NetBackup policy for Hitachi_ShadowImage or Hitachi_CopyOnWrite
- About HP-XP arrays
- HP-XP array software requirements
- Preconfiguration for HP-XP
- About communication between NetBackup and the HP-XP array
- Determining if the HP-XP command devices are visible
- About configuring the HP-XP array for NetBackup
- Obtaining the array serial number and unique HP-XP identifiers
- Configuring a NetBackup policy for HP_XP_BusinessCopy and HP_XP_Snapshot
- About array troubleshooting
- Notes on Media Server and Third-Party Copy methods
- Disk requirements for Media Server and Third-Party Copy methods
- Directives for Media Server and Third-Party Copy methods
- Storage units for Media Server and Third-Party Copy methods
- Preventing multiplexing on a third-party copy backup
- Raw partition backups
- Increasing the client read timeout for all clients
- Further information on off-host data mover backups
- Backup and restore procedures
- About performing a backup
- About performing a restore
- About restores from a FlashBackup backup
- Restoring a large number of files in a clustered file system (VxFS on UNIX Only)
- Instant Recovery restore features
- Notes for restoring individual files from an Instant Recovery snapshot
- About configurations for restore
- About restoring from a disk snapshot
- Troubleshooting
- About gathering information and checking logs
- Logging directories for UNIX platforms
- Logging folders for Windows platforms
- Customer support contact information
- Latest patches and updates
- Snapshot provider information
- Important notes on Snapshot Client
- Snapshot Client installation problems
- FlashBackup and status code 13
- Single file restore from a FlashBackup Instant Recovery snapshot of a file protected by Windows VSS writer fails
- Identifying and removing a left-over snapshot
- Removing a VxVM volume clone
- Alternate client restore and backup from a snapshot fails
- Restore from a snapshot fails with status 2800
- Raw Partition restore fails with the message 'FlashBackup-Windows policy restore error'
- Snapshot creation fails with error 156
- Snapshot fails with error 20
- Snapshot job fails and the snapshot command does not recognize the volume name
- Snapshot creation fails with error 4220
- Snapshot creation fails when the same volume is mounted on multiple mount points of the same host
- Snapshot-based backup and restore failure
- Multiple snapshot jobs fail with code 156 or 1541.
- FlashBackup policy fails, with multiple backup selections [Cache =]
- Partial backup failure with 'Snapshot encountered error 156'
- Backup of file system validation fails with error 223
- Policy validation fails if the specified CIFS share path contains a forward slash
- An NDMP snapshot policy for wildcard backup fails with error 4201
- Troubleshooting with bpfis log
- Limitations of using HP-UX 11.31
- Appendix A. Managing nbu_snap (Solaris)
- Appendix B. Overview of snapshot operations
- Appendix C. NetBackup integration with CloudPoint for snapshot managment
Snapshot errors with IBM DS6000 and DS8000 arrays (NetBackup status code 156)
Note these possible explanations:
Table: Issues encountered with Snapshot (NetBackup status code 156)
Issue | Explanation/Recommended Action |
|---|---|
The snapshot device (clone) is not visible (unmasked) to the NetBackup client or alternate client. | Make the clone device visible to the NetBackup client or alternate client before you retry the backup. Contact IBM technical support or refer to your IBM array documentation. |
The snapshot device (clone) is also a source device in another device pair. The following message may appear in the CMUN03041E mkflash: Copy Services operation failure: already a FlashCopy source | Reconfigure source and clone devices so that the clone required for this backup is not a source device for another clone. Contact IBM technical support or refer to your IBM array documentation. |
The snapshot device (clone) and source device are not of equal size. The following message may appear in the CMUN03049E mkflash: Copy Services operation failure: incompatible volumes | Reconfigure source and clone devices to be identical in size. Contact IBM technical support or refer to your IBM array documentation. |
The source device is already recording enabled for FlashCopy. The following message may appear in the CMUN03027E mkflash: FlashCopy operation failure: action prohibited by current FlashCopy state. Contact IBM technical support for assistance. | Verify whether the source device has a FlashCopy relationship with some device other than the snapshot device (clone) specified in the policy. If a FlashCopy relationship exists with some other device, delete the relationship and start the backup again. |
The IBM FlashCopy license is not installed. The following message may appear in the CMUN03035E mkflash: Copy Services operation failure: feature not installed. | Install the FlashCopy license on the storage subsystem. Contact IBM technical support or refer to your IBM array documentation. |
The FlashCopy relationship is not recording enabled. The following message may appear in the CMUN03027E resyncflash: FlashCopy operation failure: action prohibited by current FlashCopy state. Contact IBM technical support for assistance |
|
A FlashCopy relationship does not exist. The following message may appear in the CMUN03027E resyncflash: FlashCopy operation failure: action prohibited by current FlashCopy state. Contact IBM technical support for assistance. A resynchronize operation was attempted on a FlashCopy pair that does not exist. | Verify that a FlashCopy pair does not exist, and then re-execute the backup. |
Incremental Copy is in progress. The following message may appear in the CMUN02498E resyncflash: The storage unit is busy. This message can appear for the following reasons:
| Allow the background copy or maintenance activity to complete. Then re-run the backup. |
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