Required parameters

SDEVN

Specifies the hexadecimal device number of a local CKD device that will be used as the FlashCopy® source. SDEVN is not supported when OPENDVCS(YES) or REMOTE(YES) is specified.

TDEVN

Specifies the hexadecimal device number of a local CKD device that will be used as the FlashCopy target. This number can be entered without the 'X' designation. The target device can be online or offline. If the target device is online, the completion of the FCESTABL command depends on the setting of the ONLINTGT parameter.

Note:

Online means not only online to the host from which you are operating, but potentially online to any other host attached to the ESS. If the device is in a path group to another host, it is considered online.
TDEVN is not supported when OPENDVCS(YES) or REMOTE(YES) is specified.

DEVN

When OPENDVCS(YES) is specified for a local FlashCopy relationship (REMOTE(NO) is specified or allowed to default), DEVN must specify a CKD access volume located in the same subsystem cluster as the fixed block device identified by SOURCE in this command.

When OPENDVCS(YES) is specified with (REMOTE(YES), DEVN must specify a CKD access volume located in the same subsystem cluster as the PPRC primary device that is paired with the PPRC secondary specified as the FlashCopy source.

When REMOTE(YES) is specified for CKD volumes (OPENDVCS(NO) is specified or allowed to default), DEVN must specify the PPRC primary device that is paired with the PPRC secondary specified as the 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, SOURCE specifies the source volume’s storage control serial number (serialno), logical storage subsystem (lss), and channel connection address (cca) or logical unit number (lun).

Where:

serialno: Specifies the storage control serial number that can include up to 10 digits, depending on the type of storage control.
lss: Specifies the two-digit hexadecimal value for 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.
lun or cca: lun specifies the two-digit hexadecimal value for the logical unit number of the open device. cca specifies the two-digit hexadecimal channel connection address

TARGET

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