HP StorageWorks 1500 Modular Smart Array maintenance and service guide (356606-002, October 2006)

Controller LEDs
During normal r
untime, the array controller has 18 LEDs that indicate controller activity or malfunction.
12 11 10131415161718
7 8 9654321
15588
Item Name
Condition
Meaning
1
Drive failure
On
Aconfiguredharddrivehasfailed.
On
Cache active.
Off
No cache activity.
2
Cache activity
Blinking
Cache transfer pending.
3
SCSI bus 1 activity
On
Activity on the bus.
4
SCSI bus 0 ac
tivity
On
Activity on
the bus.
5
Logical I/O activity
On
Currently processing logical requests from
the host adapter.
6
Direct Memory Access
(DMA) activity
On
DMA transfers are active.
On
This controller is active.
7
Active/St
andby
Off
This controller is standby.
8
Heartbeat Blinking
The controller is functioning properly.
9
Fault On (amber
)
An error m
essage has been sent to the
controll
er LCD display panel.
10
Redundancy active
On (green)
The two controllers and the two Fibre
Channel I/O modules are in a redundant
mode of operation.
On
The controller is idle.
11–13
Busy status — These
three LEDs are used to
progressively represent the
processing load on the
controller.
Off The cont
roller is operating at full capacity.
14–18
Fibre Channel ID
—
Indicates the 5–bit Arbitrated Loop Physical
Address (ALPA) assigned to this array
contr
oller (not applicable in fabric mode).
maintenance and service guide
23