Workflow for storing Thin Image snapshot data

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. The pair is in "PAIR" status.

  1. The host updates the primary volume.

  1. Split the Thin Image pair. The snapshot data of the primary volume is stored (Snapshot data A in the figure below).

  1. The host updates the primary volume again.

  1. Split the Thin Image pair. 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.

olh-note.gif The host references the P-VOL, which includes Snapshot data A and Snapshot data B. These snapshots are handled as Thin Image S-VOL pairs with the snapshot attribute.