Workflow for storing snapshot data
Snapshot data is data in the pool, which is replaced data.
Use the following workflow to replace data in the pool:
You create an HTI pair. The pair is in “PAIR” status.
The host updates the primary volume.
You split the HTI pair. The snapshot data of the primary volume is stored (Snapshot data A in the figure below).
The host updates the primary volume again.
You split the HTI pair. The updated data in the primary volume is stored as snapshot data (Snapshot data B in the figure below). In the event of data corruption, you can recover using this snapshot data.
The host references the P-VOL, which includes Snapshot data A and Snapshot data B. These snapshots are handled as HTI S-VOLs.