PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.2 (Linux)

1.5.3 Instant Snapshot by OPC

By cooperation with the OPC (One Point Copy) function provided by Fujitsu Storage Systems ETERNUS, 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.

Instant Snapshot by OPC
Instant snapshot by OPC is only available with the following storage systems supporting the function:
ETERNUS8000 series, ETERNUS6000 series,
ETERNUS4000 series, ETERNUS3000 series,
GR720, GR730, GR740

[Figure: Instant Snapshot by OPC]