The /STOP-SNAP-SESSION command (see "STOP-SNAP-SESSION Cancels a snap pair") terminates snap sessions. The snap pairs are canceled and the snap unit is discarded. The data of the snap units can then no longer be accessed. On command execution, the snap unit assumes the UNUSED status (not for VMAX3).
Snap units can also be selected directly via their mnemonic device names or via the pubset ID of the split pubset.
ETERNUS DX/AF
Only for ETERNUS DX S3/DX S4/AF S2: If more than one snap session (snap unit) exists for an original unit, by default SnapOPC+ only enables the "oldest" snap session to be terminated, see "SnapOPC+ (ETERNUS DX/AF)".
"Younger" snap sessions can be terinated using the FORCE=*YES operand. In this case all other "older" snap sessions are also terminated implicitly.
The /STOP-SNAP-SESSION command is rejected with return code NDE1820 while reconstruction is being performed. It can only be executed successfully after reconstruction has been completed.
Symmetrix/VMAX3
Random (the first possible, a particular preceding, the oldest) or all snap sessions for an original/unit can be canceled.