Local replication with snapshots

The following functions are available for local replication with snapshots:

• SnapOPC+ function with freely selectable snap units

• SnapOPC+ function with snap data volumes as snap units

The functions are consequently presented in parallel in this chapter:

Section                                            

SnapOPC+

Snap-Units

Status of the snap session and of the units

Working with snap units

SnapOPC+ and REC

Commands for SnapOPC+

Command	Function
RESTORE-FROM-SNAP	Reconstructs an original unit from a snap unit
SHOW-SNAP-SESSION-STATUS	Displays the status of snap pairs
SHOW-STORAGE-CONFIGURATION	Displays the configuration
SHOW-STORAGE-DEVICE-CONFIG	Displays device configuration
START-SNAP-SESSION	Creates and activates a snap pair
STOP-SNAP-SESSION	Cancels a snap pair

The commands for these functions control replication functions which assign one or more snap units to an original unit and manage the snap pairs (snap sessions) created. The SHOW commands display the current processing status, the status of the snap sessions and the configuration.