Configuring a policy for EMC_TimeFinder methods
Use the following instructions for the EMC TimeFinder array methods (EMC_TimeFinder_Snap, EMC_TimeFinder_Clone, EMC_TimeFinder_Mirror).
Help for setting up a NetBackup policy is available.
To configure a policy for EMC_TimeFinder methods
- In the NetBackup Administration Console, click the Perform snapshot backups box on the policy Attributes tab.
- Click the Options option to display the Snapshot Options dialog box.
- In the Snapshot method pull-down list, select a TimeFinder method.
Enter a value in the Value field for the SAVE Device Pool. You can also use the default pool.
When you use the default pool for all operations, the device space is quickly consumed and backups can fail. But when you use a separate pool to configure the policy, there is less chance of backup failure.
- NetBackup uses this information to correctly rotate through the snapshot, clone, or mirrors when performing a backup. After all the snapshots, clones, or mirrors have been used in a backup, NetBackup automatically determines which is the oldest. NetBackup expires the oldest snapshot, clone, or mirror so that it can be reused for the current backup.
In the Snapshot Options dialog box of the policy, you must specify the following information:
Symmetrix ID.
Unique ID for the snapshot resource from which the TimeFinder_Mirror, Clone, or Snapshot is created.
Unique ID for the target device(s) where the mirror, clone, or snapshot is created.
- See your array administrator for these values.
- Copy and paste (or type) these values into the appropriate field of the NetBackup policy's Add Snapshot Resource dialog box. The procedure is as follows.
- After selecting an EMC_TimeFinder method on the Snapshot Options dialog box, click Add.
- In the Add Snapshot Resource dialog box, enter the Symmetrix ID in the Array Serial # field.
- Enter the unique ID for the source device in the Source Device field.
- Enter the unique IDs for the target devices in the Snapshot Device(s) field.
To enter multiple IDs, place a semicolon between them. The ID should be a four-digit value.
For EMC_TimeFinder_Mirror, the target devices are BCV devices.
For EMC_TimeFinder_Snap, the target devices are VDEV devices.
For EMC_TimeFinder_Clone, the target devices are the STD devices that were allocated to be used as clones.
- Enter source and target device IDs exactly as they appear on the Symmetrix.
For example, if device 4c appears as 004C, then enter it as 004C (case does not matter). The symdev show command can be used to determine how a device ID appears on Symmetrix. Refer to your SymCLI documentation for more information on this command.
For Instant Recovery backups, the Snapshot Device(s) entries determine where and in what order the snapshots are retained.