SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)

Storage Subsystem Commands
SCF Reference Manual for the Storage Subsystem—529937-008
14-61
ALTER SCSI Command
HIGHPIN { ON | OFF }
specifies whether the IOP can run at a high PIN (ON, the default) or only at a low
PIN (OFF).
LUN number
is the logical unit number (LUN) of a device connected to the Open SCSI device.
For devices connected to a SCSI controller number is in the range 0 through 7.
For Fibre Channel devices number is in the range 0 through 32767.
MAXOPENS number
is the maximum concurrent opens allowed for the device. number is in the range
1 through 64. The default is 4.
NUMIO number
is the number of concurrent I/O operations that the Open SCSI IOP can have
outstanding. This value determines the size of the allocated data-buffer area.
number is in the range 1 through 15. The default is 8.
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.
PRIMARYLOCATION ( group,module,slot )
is the location of the adapter that controls the primary path to the Open SCSI
device.
PRIMARYPORTNAME number
is the Fibre Channel port name used by the primary path to the Open SCSI device.
The number should be entered as a 16-character hexadecimal number, without a
leading %H.
PRIMARYSAC { number | name }
is the SAC that controls the primary path to the device.
number is the SAC subdevice number on the adapter. If you specify
PRIMARYSAC in number format, you must also specify
PRIMARYLOCATION.
name is full name of the adapter location including the SAC number.
For example:
SNDA.SAC-1.GRP-1.MOD-1.SLOT-53