Controls and Indicators
Hot Swap Hard Drive Indicators
Each of the hot swap hard drives has two LED indicators:
•
•
Status Indicator
This LED indicates the drive operating condition: normal, warning, or failure.
Activity Indicator
This LED indicates the disk drive access activity. This LED indicator is controlled by the
disk drive directly. When a drive is accessed, the LED indicator shows a green light.
Table 1-2 and Table 1-3 describe the LED signals used to indicate the operation status of a
disk drive.
Table 1-2: Hot Swap Hard Drive Operation Status Conditions
Condition LED
Signaling
Note
Drive access
Activity
Green (flashing)
Under HDD control*
Drive fault
Status
Amber (solid)
Drive predictive fault
Status
Amber (flashing)
Missing management PCA or
jumper cable
Status
Amber (solid)
For all HDD on SCSI bus A
and/or B
Drive/slot normal (drive present)
Status
Green
Pass through mode
Drive/slot normal (drive not
present)
Status
OFF
Pass through mode
*
During disk drive spin-up or a hung-up situation, the activity LED may stay solid green for a
long period.
Table 1-3: Hot Swap Hard Drive LED Indicator
Status LED
Activity Status LED
•
Off
: Normal or unit not powered
•
Off
: Normal
•
Green
(
solid)
:
- Normal and under power
- I/O activity
•
Green (flashing)
: I/O activity
•
Green
(
solid
for more than one minute):
Disk spinning up or “hung”
•
Amber (flashing)
: predictive failure
•
Amber (solid)
: hard drive failure
1-2
HP ProLiant ML150 Server Operations and Maintenance Guide
HP CONFIDENTIAL
Codename: Stone Soup Part Number: 343329-001 Last Saved On: 8/14/03 10:01 AM
