HP Surestore Disk Array 12h - And FC60 Service Manual page 241

Table 31 Controller Enclosure Troubleshooting Flowchart (Sheet 1 of 5)
Power is being
applied to the Array
Enclosure.
Fast Write
Cache LED on or
flashing?
Yes
Experiencing Intermittent
or interface
problems?
Yes
Look at the
Array Controller's
Yes
Power LED on?
FRONT PANEL
Array Enclosure Power Problem
Check for:
1. Power Cords
No
2. Power Switch
3. PDU
4. A/C Breaker
5. Controller Fan module is unplugged
6. BOTH Power Supplies are bad
7. BOTH Power Supplies overheated
(Thermal Shutdown)
8. Midplane is bad
9. Wiring harness is bad
No Data in Write Cache.
Indicates one of the
No
following conditions:
1. No I/O
2. Cache disabled
Data is in
Write Cache
Normal Array
Enclosure LED No
Status
End
No
Check the Host for errors using STM, AM60 and
syslog.log. Intermittnet problems can be caused
by the following:
1. Missing patches
Install latest driver patches
2. Firmware level
Install latest Firmware levels
3. Unsupported configurations.
4. Host adapter
5. FC Cables
6. Controller Module
Start
LEDs
BBU may be faulted or
charging, proceed to E.
Go to
E
Any Other
FRONT PANEL LEDs
on besides Power or
Cache?
Yes
Fault
Condition
Go to
B
Controller Enclosure Troubleshooting
A
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