Understanding Disk Drive Leds - Intergraph StudioZ RenderRAX III System Setup

Understanding Disk Drive LEDs

Light-emitting diodes (LEDs) visible behind the disk drive bay door help you determine disk
drive activity and status at a glance. There are two LEDs for each disk drive, for a total of
eight disk drive LEDs. These LEDs indicate the activity and status of each disk drive installed
in the disk drive bay.
The right LED above each disk drive flashes to show disk activity.
On a system with RAID disk drives, an optional SCSI Activity Fault-Tolerant Enclosure
(SAF-TE) card monitors the status of RAID disk drives. The SAF-TE card causes the left
LED above each disk drive to indicate RAID disk drive status, as follows:
Left LED Activity
Off
Steady on
Steady blink (approx. 1 per second)
Fast steady blink (approx. 3 per second)
4 fast blinks, pause (repeats)
2 fast blinks, pause (repeats)
The left LED functions only when the SAF-TE card is installed, and the backplane is
connected to a SAF-TE compliant host bus adapter or RAID card.
To administer the RAID disk drives and the SAF-TE card, use the Mylex RAID configuration
utility as described in the Mylex RAID controller documentation delivered with the system.
Drive Status LEDs
Disk Drive Status
No error
Disk drive rebuild stopped or disk drive is faulty
Disk drive rebuild in progress
Disk drive identification in progress
Disk drive experienced a predicted fault
Disk drive is a hot spare
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