Required parameters

SDEVN or TDEVN

Specifies the type of device to withdraw from a FlashCopy® relationship. You must specify at least one of the parameters when withdrawing a local CKD from a FlashCopy relationship. The following values are associated with these required parameters:

SDEVN

Specifies a four-digit hexadecimal device number of a local CKD device used as the FlashCopy source.

Note:

If you specify the SDEVN parameter, you must also specify the TDEVN parameter, unless you also specify DDSW(YES). However, you can specify the TDEVN alone.
If you specify DDSW(YES), you must specify the SDEVN parameter, in which case the TDEVN parameter is ignored.

TDEVN

Specifies a four-digit hexadecimal device number of a local CKD device used as the FlashCopy target.

DEVN

When OPENDVCS(YES) is specified, DEVN identifies a CKD access volume located in the same subsystem cluster as the open volume specified as SOURCE in this command.

When OPENDVCS(YES) and REMOTE(YES) are both specified, DEVN identifies a CKD access volume located in the same subsystem cluster as the PPRC primary paired with the PPRC secondary acting as the FlashCopy source.

When REMOTE(YES) is specified for CKD volumes ((OPENDVCS(NO) is specified or allowed to default), DEVN identifies the PPRC primary device paired with the PPRC secondary acting as FlashCopy source.

DEVN must be a 4-digit hexadecimal address of a configured device with a UCB on the System z® system issuing the command.

SOURCE

When OPENDVCS(YES) or REMOTE(YES) is specified, this identifies the source volume to be withdrawn from a FlashCopy relationship, by storage control serial number (serialno), primary volume channel connection address (CCA), and logical storage subsystem (lss).

Where:

serialno: Specifies the storage control serial number that can include up to 10 digits, depending on the type of storage control.
lss: Specifies a 2-digit hexadecimal value that specifies the logical subsystem (LSS) for the device (ESS only).
Note: The LSS number is required if the storage control supports logical subsystems (like the ESS) and not allowed if the storage control does not support logical subsystems.
cca: Specifies the 2-digit channel connection address
lun: Specifies the 2-digit hexadecimal LUN address

TARGET

When OPENDVCS(YES) or REMOTE(YES) is specified, this identifies a target volume to withdraw from a FlashCopy relationship. The descriptions for these values are the same as those shown for the SOURCE parameter.