Technical data

3–12 HSG80 ACS Solution Software Version 8.6 for Compaq Tru64 UNIX Installation and Configuration Guide

HSG80 units appear like any other SCSI device. All four entries for Bus 2, Target 1 in the

example display are HSG80 units. The last entry would be for unit D103 on host SCSI bus

hwmgr

Hwmgr is available on Tru64 UNIX V5.1x systems. hwmgr is a very powerful utility for

managing system hardware. For example you can use this command to view devices:

# hwmgr -view devices

and to get attributes:

# hwmgr -get attribute.

See the UNIX online help for more information.

iostat

You can use the iostat utility to view performance statistics on Enterprise Storage RAID

Array storage units. (Set your terminal screen to 132 columns before running iostat.)

The output from iostat shows the number of devices (LUNs) that have been defined in the

configuration file. It is much easier to interpret the output if the configuration file contains

entries for all eight devices. If the configuration file does not contain entries for all

devices, the iostat output has fewer columns and it is difficult to correlate each column

with a specific device.

For V4.0G

# iostat rznn s t

The output from iostat shows all devices that have device name rznn. The information for

LUN 0 is in the first column, the information for LUN 1 is in the second column, and so

forth.

# iostat rz16 5 4

rza16 rzb16 rzc16 rzd16 rze16 rzf16 rzg16 rzh16

bps tps bps tps bps tps bps tps bps tps bps tps bps tps bps tps

0 0 0 0 0 0 0 0 0 0 0 0 0 0 126 3

0 0 0 0 0 0 0 0 0 0 0 0 0 0 1618 34

0 0 0 0 0 0 0 0 0 0 0 0 0 0 1639 34

0 0 0 0 0 0 0 0 0 0 0 0 0 0 1610 34