Splitting Thin Image pairs to store snapshot data

Thin Image User Guide
Version
9.8.6
Audience
anonymous
Part Number
MK-98RD9020-16

This topic explains how to split pairs. Splitting pairs stores snapshot data.

A maximum of 1,024 snapshots can be stored or pairs can be cloned from a P-VOL. If you reach the maximum, delete the unneeded or unused snapshots.

Note: If the amount of snapshot data in selected P-VOLs or the total number of pairs in selected snapshot groups exceeds 32,768, an error message appears when attempting to perform pair tasks.

If you use CCI commands, see Pair tasks using CCI or Device Manager - Storage Navigator.

  • You must have the Storage Administrator (Local Copy) role.
  • The Thin Image pair status must be "PAIR".
  1. In the Explorer pane, click Storage Systems, expand the storage system tree, expand Replication, and then click Local Replication.
  2. In the Local Replication window, select a P-VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups tab.
  3. Click Operate TI Pairs.
  4. In the TI Pairs window, specify the pair you want to split and then click Split Pairs.
    You can specify P-VOLs in Device Manager - Storage Navigator until the total number of snapshots or clones reaches 32,768. You can also specify snapshot groups until the total number of pairs reaches 32,768. For cascaded pairs with layers, start with pairs at the higher layers.
  5. Click Finish, and then confirm the settings.
  6. Accept the default task name or enter a unique name.
    You can enter up to 32 letters, numbers, and symbols, except the following:

    \ / : , ; * ? " < > |

  7. If you want to monitor the task after submitting it, select Go to tasks window for status.
  8. Click Apply to submit the task.
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