HP LeftHand P4000 SAN Solutions - Manual (Page 190)

In Figure 88 (page 189) , the original volume is C#. Three snapshots were created from C#:
•
C#_snap1
•
C#_snap2
•
C#_SCsnap
Then a SmartClone volume was created from the latest snapshot, C#_SCsnap. That volume has a
base name of C#_class. The older two snapshots, C#_snap1 and C#_snap2, become shared
snapshots, because the SmartClone volume depends on the shared data in both those snapshots.
Table 63 How it works—shared snapshots
C# First, a volume
C#_snap1C#_snap2C#_SCsnap Next, 3 snapshots
C#class_x Finally, SmartClone volumes from the latest snapshot
Latest snapshot becomes clone point
Older two snapshots become shared between clone point
and SmartClone volume.
The shared snapshots also appear under all the volumes which share them. In Figure 88 (page 189) ,
they are displayed under the original volume from which they were created, and under the single
SmartClone volume that shares them. The selected shared snapshot is highlighted in the navigation
window, under both the volumes with which it is shared. Shared snapshots can be deleted.
Creating SmartClone volumes
You create SmartClone volumes from existing volumes or snapshots. When you create a SmartClone
volume from another volume, you first take a snapshot of the original volume. When you create a
SmartClone volume from a snapshot, you do not take another snapshot.
To create a SmartClone volume
When you create SmartClone volumes, you either set the characteristics for the entire group or set
them individually.
190 SmartClone volumes