Technical data

Preparing the Host System 3–13
The above display shows activity on all 8 LUNs attached to one SCSI-bus (2), one Target
0. The above list represents information on rza16, rzb16... rzh16. The device with activity
is device rzh16.
The iostat utility only recognizes device names in the format rznn where nn is calculated
as:
(8 * Host SCSI Bus #) + (HSG Target ID)
(This is the same formula and format that is used for the configuration file.)
Invoke the iostat utility using the following format:
For V5.1x
# iostat dsk3 s t
Where:
■ rznn or dsk3 is the device name
■ The s is optional and denotes the amount of time, in seconds, between screen updates
■ The t is optional and denotes the total number of screen updates
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 dsk3 1 5
tty floppy0 dsk3 cpu
tin tout bps tps bps tps us ni sy id
0 5 0 0 10 2 0 0 1 99
0 52 0 0 16 2 0 0 0 100
0 52 0 0 16 2 0 0 0 100
0 52 0 0 16 2 0 0 0 100
0 52 0 0 8 1 0 0 1 99