Required parameters

DEVN

Specifies the device number of any disk volume that is attached to the primary site storage control without directing any operation to the volume. The device number is the 4-digit hexadecimal address of any disk volume behind the primary site storage control.

When a path between open device LSSs is being removed, DEVN identifies a System z® device to act as a CKD access volume. This device must be located in the same subsystem cluster as the primary device.

PRIM

For ESCON® paths this parameter specifies the primary site storage subsystem ID (SSID), serial number (serialno), and logical subsystem (LSS).

Note: If the link addresses between subsystems use fibre channel port (FCP) numbers, WWNN is specified instead of storage control serial number.

Where:

ssid: Specifies a 4-character hexadecimal subsystem identifier (SSID). ssid must be specified in X'' notation.
serialno: Specifies the storage control serial number, which can include up to 12 digits, depending on the type of storage control.
Note: If the link addresses between subsystems use fibre channel port (FCP) numbers, specify wwnn instead of serialno.
wwnn: Specifies the World Wide Node Name in exactly 16-hexadecimal digits. The World Wide Node Name is used to access the primary storage control referenced by the ssid using FCP. When the wwnn is specified, it also indicates that the LINK addresses contain Fibre Channel adapter numbers. If you specify the wwnn for the primary logical subsystem, you must also specify the wwnn for the secondary logical subsystem.
NOTE: wwnn cannot be used with serialno.
lss: Specifies a 2-digit hexadecimal value for the logical subsystem of the device (ESS only).

Note: 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.

SEC

Specifies the recovery site storage subsystem ID and serial number. The descriptions for the values are the same as for the PRIM parameter. NOTE: The PRIM and SEC parameters must both specify either a serialno or a wwnn.