Optional parameters

OPENDVCS

Specifies whether Open System (fixed block) devices or CKD devices are addressed in the required parameters of this command. The values are:

NO: The required parameters address CKD devices. The default is NO.
YES: Specifies that the required parameters in this command target fixed block devices using a CKD access device.

ID

Specifies that volume serial verification is performed when you use this parameter. You can specify a 1–6 character volume serial number for this parameter. If you specify the ID parameter, the old volser is required and the new volser is optional. If you do not specify the ID parameter, volume serial verification is not performed.

ID is not valid when OPENDVCS(YES) is specified.

Note: The secondary volume is reset to SIMPLEX state regardless of the following conditions:

The ID parameter is not specified
The volume serial numbers specified do not match
A new volser is specified but the volume relabeling operation fails

The values are:

old volser: Specifies the 1–6 character volume serial number that will be compared to the PPRC secondary volume serial number. If the old volser does not match the secondary volume serial number, an error message is issued.
new volser: Specifies the 1–6 character volume serial number that will replace the PPRC secondary volume serial number if the old volser matches the secondary volume serial. If the old volser does not match the secondary volume serial number, this parameter is ignored.

SUBCHSET

Specifies the subchannel set in which the command is to be issued. The subchannel set where the I/O will be issued is the subchannel set as defined in the Hardware Configuration Dialog (HCD). The valid values are determined by what is supported by the host system's processor and configured for the device.

If you omit the parameter, the command is issued to the device that is logically in subchannel set 0. If a swap has occurred, this could be the device that was defined in an alternate subchannel set in the I/O configuration (IODF), with HCD.