- Notes, cautions, and warnings
- Preface
- Introduction to TimeFinder SnapVX
- Performing TimeFinder SnapVX Operations
- Establish SnapVX snapshot
- Rename SnapVX snapshot
- Set SnapVX snapshot time to live (TTL)
- Set persistent SnapVX snapshot
- Convert SnapVX snapshot to secure snapshot
- Link a SnapVX snapshot
- Change SnapVX snapshot link mode
- Unlink SnapVX snapshot
- Relink SnapVX snapshot
- Restore SnapVX snapshot
- Terminate SnapVX snapshot
- TimeFinder SnapVX snapshot reporting
- TimeFinder SnapVX Configurations and Examples
- TimeFinder SnapVX State Reference Rules
- Determine SnapVX states/SRDF and ORS operations interaction
- State rules for TimeFinder SnapVX operations with SRDF pair states
- TimeFinder SnapVX operations with ORS pair states
- State rules for source control operations with SnapVX and Clone source states
- State rules for source control operations with SnapVX and Clone source states
Dell Solutions Enabler 10.0.0 TimeFinder SnapVX CLI User Guide
Refresh multiple test or development environments from a SnapVX linked target
SnapVX “links” enable access to point-in-time copies by linking snapshot data to a host mapped target device.
Use SnapVX to provision multiple test or development environments using linked snapshots. Each linked storage group can access the same snapshot or each can access a different snapshot version in either no copy or copy mode. Changes to the linked volumes do not affect the snapshot data. To roll back a test development environment to the original snapshot image, simply perform a relink operation.
NOTE:Target volumes must be unmounted before issuing the relink command to ensure that the host operating system is not caching any filesystem data. Once the relink is complete, volumes can be remounted. Snapshot data is unchanged by the linked targets, so it can also be used for restoring to production.
In the following figure, multiple servers/organizations link to snapshots for different uses. Each target is independent, and changes to one target does not affect the other targets.
Link snapshottargetless_snapshot to target devices shown in the above figure:
symsnapvx -sid 001 -sg StorageGroup1 -lnsg BACKUP_SG -snapshot_name targetless_snapshot link
symsnapvx -sid 001 -sg StorageGroup1 -lnsg TEST_SG -snapshot_name targetless_snapshot -gen 1 link
symsnapvx -sid 001 -sg StorageGroup1 -lnsg DEV_SG -snapshot_name targetless_snapshot -gen 2 link
symsnapvx -sid 001 -sg StorageGroup1 -lnsg QA_SG -snapshot_name targetless_snapshot -gen 3 link
Refresh (rollback) QA_SG target device to the original snapshot image:
symsnapvx -sid 001 -sg StorageGroup1 -lnsg QA_SG -snapshot_name targetless_snapshot -gen 3 relinkThis process can be repeated for any of the other test environments.
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