By cooperation with the OPC (One Point Copy) function provided by ETERNUS Disk storage system, snapshots can be created instantly at any given moment.
Unlike snapshot by synchronization, instant snapshot by OPC does not require synchronization with volumes in advance, so scheduling is unnecessary. However, as copying process will take place within the disk array after the snapshot has been created, I/O performance of the disk will be affected until the copying is complete.
Note
Instant snapshot by OPC is only available with a disk array unit supporting the function.
Figure 1.39 Instant Snapshot by OPC
