Hewlett Packard Enterprise HPE XP7, Руководство пользователя, Страница: 14 / 311

For more information about defining Cnt Ac-J pairs in consistency groups, see the HPE XP7 Continuous
Access Journal User Guide .
For more information about defining BC pairs in consistency groups, see the HPE XP7 Business Copy
User Guide .
More information
Workflow for creating groups and storing snapshot data using RAID Manager on page 26
Adding Fast Snap pairs to snapshot or consistency groups using RAID Manager on page 119
Removing Fast Snap snapshot groups on page 130
Pair tasks using RAID Manager or Remote Web Console on page 194
Snapshot Clones
When distributing data in a storage system, you can use clones to improve efficiency.
The following figure illustrates cloning.
When cloning pairs, use a logical volume as the P-VOL and a THP V-VOL as the S-VOL.
If you split pairs that have the clone attribute, the data of the entire P-VOL is copied to the S-VOL
asynchronously to create a clone of the primary volume. When the copy completes, pairs are deleted and
the S-VOL is unpaired (becomes a THP V-VOL). This volume can be used as a volume in the same
status as the P-VOL. This operation is referred to as cloning pairs.
A maximum of 1,024 clones (including the number of snapshots if you store them) can be created by
using Fast Snap.
Cloning pairs includes operations after the P-VOL is copied to the S-VOL, until volumes are unpaired.
Volumes created by cloning are not included.
Snapshot trees and cascaded pairs
The volume in the top layer of the snapshot tree is the root volume. Volumes in the bottom layer are leaf
volumes.
14 Snapshot Clones