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

Storage Subsystem Commands
SCF Reference Manual for the Storage Subsystem—529937-007
14-91
ALTER TAPE Command
This setting can be overridden by the MEDIACOM ALTER TAPEDRIVE
MEDIADEFS command. See the discussion on date compression in the
DSM/Tape Catalog User’s Guide.
DENSITY { 1600 | 6250 }
(5170 tape drives only) is the tape density in bpi. (Other tape drives use a
standard density which is displayed by the INFO TAPE command.) The default
is 6250.
DEVICEID number
is the device ID of the tape drive.
This value must match either the SCSI ID of the tape drive (if SCSI-connected) or
the device ID of the tape (if Fibre Channel connected).
If the tape drive is connected to a PMF CRU, an IOMF CRU, or an SNDA, number
is in the range 0 through 5. The default is 5.
If the tape drive is connected to an F-SAC of an SNDA, number is 4 or 5.
HIGHPIN { ON | OFF }
specifies whether the IOP can run at a high PIN (ON, the default) or only at a low
PIN (OFF).
LOCATION ( group, module, slot )
is the location of the adapter where the tape drive is connected.
LUN number
is the logical unit number (LUN) used by the path of the tape volume in the range 0
through 31.
MAXOPENS number
is the maximum number of concurrent opens allowed for the device. number is in
the range 1 through 64. The default is 4.
PORTNAME number
is the Fibre Channel port name used by the path to a tape volume. The number
should be entered as a 16-character hexadecimal number, without a leading %H.
PRIMARYCPU number
is the processor in which the primary IOP starts. The process must be in the
STOPPED state or not running for you to alter this attribute.