Technical data

Preparing the Host System 3–11
scu
You can use the SCSI CAM Utility (scu) program to see which HSG80 units are available
to the Tru64 UNIX Operating System. It is located in the /sbin directory and documented
in the REF Pages.
The scu command, scan edt, polls all devices on the host-side SCSI buses. This allows you
to show what devices are available from all host-side SCSI buses. The device special files
do not have to exist for scu to see the devices. For example, scan SCSI bus 2, where your
Enterprise Storage RAID Array is connected:
For V4.0G and V5.1x
# /sbin/scu scan edt bus 2
# /sbin/scu show edt bus 2
V4.0G Output
CAM Equipment Device Table (EDT) Information:
Bus: 2, Target: 1, Lun: 0, Device Type: Direct Access
Bus: 2, Target: 1, Lun: 1, Device Type: Direct Access
Bus: 2, Target: 1, Lun: 2, Device Type: Direct Access
Bus: 2, Target: 1, Lun: 3, Device Type: Direct Access
V5.1x Output
CAM Equipment Device Table (EDT) Information:
Bus/Target/Lun Device Type ANSI Vendor ID Product ID Revision N/W
---------------- -------------- ---- ---------- ------------ -------- ----
2 1 0 Direct SCSI-2 DEC HSG80 V86L W
2 1 1 Direct SCSI-2 DEC HSG80 V86L W
2 1 2 Direct SCSI-2 DEC HSG80 V86L W
2 1 3 Direct SCSI-2 DEC HSG80 V86L W
For detailed information about one of the units, you may use:
# /sbin/scu show device bus 2 target 1 lun 0
The preceding command line gives you the SCSI inquiry of the selected device.