Workflow for storing Thin Image snapshot data

Thin Image User Guide

Version
9.8.6
Audience
anonymous
Part Number
MK-98RD9020-16

Snapshot data is data in the pool, which is replaced data. Use this workflow to store snapshot data in the pool.

  1. Create a Thin Image pair. You can create a pair with the snapshot attribute (snapshot pairs). The pair is in "PAIR" status.
  2. The host updates the primary volume.
  3. Split the snapshot pairs. The snapshot data of the primary volume is stored (Snapshot data A in the figure below).
  4. The host updates the primary volume again.
  5. Split the snapshot pairs. The updated data in the primary volume is stored as snapshot data (Snapshot data B in the following figure). In the event of data corruption, you can recover using this snapshot data.

The following figure illustrates how data in the pool is replaced.



Note: Because Snapshot data A and Snapshot data B are handled as a Thin Image S-VOL of a snapshot pair, the host can reference the P-VOL, Snapshot data A, and Snapshot data B.