topic Battery problem in Disk Enclosures

Battery problem

julio quadros — Fri, 22 Feb 2002 12:06:48 GMT

I have a cluster of two 9000-1000A machines with service guard installed. I?ve been getting the following error :
>------------ Event Monitoring Service Event Notification ------------<

Notification Time: Wed Feb 20 09:36:29 2002

mcbepms2 sent Event Monitor notification information:

/storage/events/disk_arrays/FC60/000A00A0B8061A3E
is >= 1.
Its current value is SERIOUS(4).

Event data from monitor:

Event Time: Wed Feb 20 09:36:29 2002
Event #: 22 Event Id: 0
Event Class: I/O Severity: SERIOUS
Monitor: FC60_monitor Monitor Version: A.01.04
Hostname: mcbepms2 Client IP Address: 192.168.210.52
Client Model Number: xxxxxx Client Serial Number: xxxxxx
OS Version: B.11.00 System Software ID: xxxxxx
Client FW Version: xxxxxx
Array S/N: 000A00A0B8061A3E, Path: /dev/rdsk/c4t0d0, Path: /dev/rdsk/c6t0d0

Array at hardware path 0/4/0/0.8.0.5.0.0.0, path 0/4/0/0.8.0.4.0.0.0: The prim.
Associated OS error log entry id(s):
0000000000000000000

Latest information on this event:
http://docs.hp.com/hpux/content/hardware/ems/fc60mon.htm#22

Description of Error:
This event message is displayed when the primary battery fails
or at boot up, because the battery may be charging.

Probable Cause / Recommended Action:
Replace the battery from the main enclosure.

>---------- End Event Monitoring Service Event Notification ----------<

I?ve checked and the problem is not related to boot up because the machine was up and running when the error occured.

What is this battery and what could be the problem ?

Any help will be much appreciated
Thanks

JQ

Re: Battery problem

Bill McNAMARA_1 — Fri, 22 Feb 2002 12:17:00 GMT

What is this battery and what could be the problem ?

The battery saves the write cach when a system goes down.
(power loss)

They are in the controllers.

You should change them, and if you already have, reset the timer.

Call HP to get new batteries or on power fail you will loose active write cache and end up with corrupted filesystems.. or perhaps perf will just go way down because the array won't let you cache any more........

Later,
Bill

Re: Battery problem

Bill McNAMARA_1 — Fri, 22 Feb 2002 12:21:24 GMT

as noted by the link..
It can happen on power up too.

If the array was switched off for a long time (the weekend) it may have been using battery power to protect SIMM content.

Thus, on power up needed to be recharged.

Issue an

amdsp -i

get the serial no

amdsp -a serno

will report the battery status.

Later,
Bill