SCF Reference Manual for the Storage Subsystem (G06.24+, H06.03+)

Storage Subsystem Commands
SCF Reference Manual for the Storage Subsystem—529937-007
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ALTER DISK Command
The processor in which the primary IO process runs and the processor in which the
backup process runs need not be located in the same topology branch.
BACKUPDEVICEID { number | ( shelf, bay ) }
(45xx and M8xxx Fibre Channel disks only) is the device ID of the disk accessed
on the backup path to the disk. This attribute is optional. If specified, it must be the
same device ID as that specified for PRIMARYDEVICEID (page 14-19).
For 45xx disks:
For M8xxx Fibre Channel disks:
If you configure a disk volume for use with an FCSA connected to an ESS, you
cannot specify BACKUPDEVICEID.
BACKUPLOCATION ( group, module, slot )
(45xx and M8xxx disks only) is the location of the adapter that controls the backup
path to the device. This attribute is optional if BACKUPSAC is given in name format
but required if BACKUPSAC is given in number format.
BACKUPPORTNAME number
specifies the Fibre Channel port name (WWN) used by the backup path to a disk
volume on the Enterprise Storage System (ESS).
The ESS administrator must give you the WWN so that you can specify it in this
attribute.
Enter number as a 16 character hexadecimal number, without a leading %H.
number is the unit number of the disk. number is in the range 1
through 7.
shelf is the disk-drive enclosure’s shelf number. shelf is in the
range 1 through 4.
bay is the number of the disk. bay is in the range 1 through 14.