Compaq StorageWorks HSG60 ACS Solution Software V8.6 for Compaq Tru64 UNIX Installation and Configuration Guide

Preparing the Host System 3–7
If an error occurs regarding the disk label, there is good probability that the device can be
accessed. This error can usually be fixed by creating the disk label with the Tru64 UNIX
disklabel utility.
NOTE: For major and minor number calculations see “man SCSI” in the UNIX online help.
Reading from the device, dd
Check the created device using dd on the ‘raw’ device to see if there is a full
communication path between devices and Tru64 UNIX. For example:
For V4.0G
# dd if=/dev/rrzb17a of=/dev/null
For V5.1x
# dd if=/dev/rdisk/dsk7a of=/dev/null
This command will read the full disk-device until you press CTRL + C or the device has
been read. If the test is successful, the device activity LED (green) on the device lights. If
the device consists of multiple disks, all these will be lit.
scu
You can use the SCSI CAM Utility (scu) program to see which HSG60 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
MA6000 is connected:
For V4.0G and V5.1x
# /sbin/scu scan edt bus 2
# /sbin/scu show edt bus 2