Hewlett Packard Enterprise HPE XP7, User Manual, Page: 89 / 311

1. Create the Fast Snap data pools (see Creating Fast Snap data pools on page 89).
2. Create and register the V-VOLs for the pair (see Workflow for registering virtual volumes on page
95).
3. Create and manage the Fast Snap pairs (see Workflow for creating and managing Fast Snap pairs
on page 89).
Workflow for creating and managing Fast Snap pairs
1. Create the Fast Snap pairs (see Workflow for creating and managing Fast Snap pairs on page
113).
2. Split the Fast Snap pair to store the snapshot data using one of the available methods (see Storing
snapshot data or cloning pairs on page 119).
3. If a failure occurs and the pair is suspended ("PSUE" status), complete the following:
a. Recover the data by recovering the Fast Snap pair (see Restoring suspended Fast Snap pairs
on page 126).
b. Restore the pair, which writes snapshot data over the P-VOL (see Restoring Fast Snap pairs on
page 124).
4. Maintain the Fast Snap pair status (see How Fast Snap pair status changes on page 29).
5. Delete the Fast Snap pairs (see Deleting Fast Snap pairs on page 129).
For pairs with the snapshot attribute, create a Fast Snap pair to store snapshot data. Note, however, that
you can create up to 1,024 pairs for a P-VOL. Therefore, you must delete snapshot data or Fast Snap
pairs that are no longer necessary. When you delete a Fast Snap pair, snapshot data stored by the pair is
also deleted from the pool.
When a failure occurs, if you perform restoration, snapshot data can be overwritten in the P-VOL. If a
Fast Snap pair is already being restored, another Fast Snap pair might not be restored.
For details about operations and statuses for Fast Snap pairs, see How Fast Snap pair status changes
on page 29. For details about how to create THP pools, see the HPE XP7 Provisioning for Open Systems
User Guide .
Creating Fast Snap data pools
You can create Fast Snap data pools using RWC. For information about the creation of THP pools, see
the
HPE XP7 Provisioning for Open Systems User Guide .
According to the capacity of the pool to create, you must add shared memory. For details about the
relation between shared memory to add and the pool capacity, see
Fast Snap shared memory
requirements on page 56.
NOTE: You can only register volumes that you have not already registered as a pool-VOL.
For more information about data pool requirements, including the maximum number of pool-VOLs, see
Fast Snap data pool requirements on page 60.
You can add external and internal volumes to data pools.
Workflow for creating and managing Fast Snap pairs 89