SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

SCSI I/O Process Information:
Device Type.......... 8 Device Subtype........ 0
Physical Record Size. 4096 Priority.............. 220
Library File.........
Program File......... $SYSTEM.SYS01.TDSCSI
Explanation of Fields
SCSI Path Information:
The logical device number for the device. This number is arbitrarily assigned to a device
when you configure the device and every time the system is loaded.
LDev
The Open SCSI device path assignment.Path
Shows whether the device path is the current path (ACTIVE) or not (INACTIVE).Status
The current state of the device path.State
The processor number and PIN of the current primary and backup IOP.Primary PID Backup PID
SCSI-Specific Information:
The current number of pending I/O requests against the device.Pending I/Os
The highest number of pending I/O requests that have been outstanding against the device
since the IOP was started.
High Pending I/Os
The current number of requesters that have the IOP open.Opens
The maximum number of open requests allowed by the IOP.Max Opens
The number of paths currently opened by the IOP.Open Paths
The maximum number of I/O requests allowed by the IOP.Max I/O Requests
SCSI I/O Process Information:
8, the Open SCSI device type.Device Type
0, the Open SCSI device subtype.Device Subtype
The size of the physical records (in bytes) on the device (retrieved from the SCSI IOP).Physical Record Size
The current execution priority of the IOP.Priority
Always blank.Library File
The program file name of the IOP.Program File
Configuring an Open SCSI Device
Adding an Open SCSI Device
The “ADD SCSI Command” (page 222) adds an Open SCSI device to the system configuration
database:
1. Physically install the device.
2. Based on the manufacturer documentation, verify the SCSI ID of the device is the same as the
configured SCSIID value.
3. Add the device to the system, specifying its group, module, and slot:
-> ADD SCSI $S11500, SENDTO STORAGE, &
-> PRIMARYLOCATION (11,1,50)
For Open SCSI devices, the name convention is $Sggssi, where gg is the group number,
ss is the slot number, and i is the SCSI ID.
4. Verify the configuration:
174 Configuring and Managing Open SCSI Devices