Hot-Plug Hard Drive Leds - HP ProLiant ML150 Generation 2 Maintenance And Service Manual

Hot-Plug Hard Drive LEDs

The SCSI and SATA hot-plug hard drive LEDs, located on each physical drive, are visible on
the front of the server.
•
Status LED
This LED indicates the drive operating condition: normal, warning, or failure.
•
Activity LED
This LED indicates the disk drive access activity. This LED is controlled by the disk
drive directly. When a drive is accessed, the LED shows a green light.
SCSI LED Status
Table 4-5 and Table 4-6 describe the LED signals used to indicate the operating status of a
SCSI disk drive.
Table 4-5: SCSI Hot-Plug Hard Drive Operation Status Conditions
Condition
Drive access
Drive fault
Drive predictive fault
Missing management
PCA or jumper cable
Drive/slot normal
(drive present)
Drive/slot normal
(drive not present)
*During disk drive spin-up or a hung-up situation, the activity LED may stay solid green for a long
period.
Table 4-6: SCSI Hot-Plug Hard Drive LEDs
Status LED
•
Off: Normal or unit not powered
•
Green (solid):
- Normal and under power
- I/O activity
•
Amber (flashing): predictive failure
•
Amber (solid): hard drive failure
HP ProLiant ML150 Generation 2 Server Maintenance and Service Guide
HP CONFIDENTIAL Codename: Stone Soup 2 Part Number: 368148-003 Last Saved On: 4/19/05 5:18 PM
LED Signaling
Activity Green (flashing)
Status Amber (solid)
Status Amber (flashing)
Status Amber (solid)
Status Green
Status Off
Connectors, Jumpers, and LEDs
Note
Under HDD control*
Pass through mode
Pass through mode
Activity LED
•
Off: Normal
•
Green (flashing): I/O activity
•
Green (solid for more than one minute):
Disk spinning up or "hung"
4-9