HP NetRAID-4M Controller - Manual (Page 69)

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Working with Disks
Blinking a Disk Light
The disk blink command causes a disk drive’s activity light to
flash or stop flashing. This feature allows you to identify the
physical drive that corresponds to a disk displayed by the
disk
list command. Before executing the disk blink command, use
the disk list command to display the SCSI device ID of the disk
to be blinked.
To blink a disk drive’s activity light, use the disk blink
command, as in the following example. In the following example,
the disk drive light on device (2,2,0) will blink for five (5) seconds.
HPN0> disk blink (2,2,0) 5
Executing: disk blink (CHANNEL=2,ID=2,LUN=0) 5
To stop a disk from blinking, use the disk blink command, as in
the following example. In the example, the disk drive light on device
(2,2,0) is set to blink for 0 (zero) seconds, which stops the blinking of
the disk drive light.
HPN0> disk blink (2,2,0) 0
Executing: disk blink (CHANNEL=2,ID=2,LUN=0) 5
Working with S.M.A.R.T. Disks
The acronym S.M.A.R.T. stands for Self-Monitoring, Analysis, and
Reporting Technology. This technology is an industry standard for
hard drives that monitors a variety of disk parameters, such as the
rate of read-write errors. In addition, S.M.A.R.T. can send an alert to
system administrators about potential problems caused by disk
errors.
The CLI supports disks that incorporate S.M.A.R.T. technology. The
CLI allows you to do the following:
■ Display the S.M.A.R.T. attributes
■ Set the S.M.A.R.T. attributes
The following sections list and describe the S.M.A.R.T. attributes.