battery reconditioning

2009-09-28 Thread Stefan Miklosovic
hi list,

form time to time, there appears some error / warning
messages in console, which say this:

Sep 27 23:54:40 dell kernel: aac0: **Monitor** ID(0:02:0); Error Event
[command:0x28]
Sep 27 23:54:40 dell kernel: aac0: **Monitor** ID(0:02:0); Medium Error
[k:0x3,c:0x3,q:0x0]
Sep 27 23:54:40 dell kernel: aac0: **Monitor** ID(0:02:0); Peripheral Device
Write Fault
Sep 28 00:13:40 dell kernel: aac0: **Monitor** Battery needs reconditioning.
Sep 28 00:19:07 dell kernel: aac0: **Monitor** ID(0:02:0); Error Event
[command:0x28]
Sep 28 00:19:07 dell kernel: aac0: **Monitor** ID(0:02:0); Medium Error
[k:0x3,c:0x3,q:0x0]
Sep 28 00:19:07 dell kernel: aac0: **Monitor** ID(0:02:0); Peripheral Device
Write Fault
Sep 28 00:23:09 dell kernel: aac0: **Monitor** ID(0:02:0); Error Event
[command:0x28]
Sep 28 00:23:09 dell kernel: aac0: **Monitor** ID(0:02:0); Medium Error
[k:0x3,c:0x3,q:0x0]
Sep 28 00:23:09 dell kernel: aac0: **Monitor** ID(0:02:0); Peripheral Device
Write Fault
Sep 28 00:23:52 dell kernel: aac0: **Monitor** Container 0 completed SCRUB
task:

aac0 is raid device

target machine:
FreeBSD dell.tlis.sk 8.0-RC1 FreeBSD 8.0-RC1 #0: Thu Sep 17 20:45:19 UTC
2009 r...@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

it is dell poweredge 6450, 4x xeon 700MHz, 4G ram, 4X72G disk in raid5

thank you
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Re: battery reconditioning

2009-09-28 Thread Olivier Nicole
Hi,

 form time to time, there appears some error / warning
 messages in console, which say this:
 Sep 28 00:13:40 dell kernel: aac0: **Monitor** Battery needs reconditioning.

What is your question?

It informs you you should change the battery used on the RAID
hardware, so change the battery :)

Hardware RAID has a system to delay the write when the disk is
idled. The sectors to be written are kept in a temporary RAM and this
RAM is powered by batteries. When there is a power failure, the
battery should provide electricity to the hard disk, just long enough
to write back the sectors that have been delayed. If the battery
fails, these sectors will never be written.

So if the battery is bad, replace the battery.

Best 

Olivier
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Re: battery reconditioning

2009-09-28 Thread RW
On Mon, 28 Sep 2009 14:49:47 +0700 (ICT)
Olivier Nicole olivier.nic...@cs.ait.ac.th wrote:

 Hi,
 
  form time to time, there appears some error / warning
  messages in console, which say this:
  Sep 28 00:13:40 dell kernel: aac0: **Monitor** Battery needs
  reconditioning.
 
 What is your question?
 
 It informs you you should change the battery used on the RAID
 hardware, so change the battery :)

It says reconditioning rather replacing. Some battery types benefit
from an occasional deep discharge.

http://support.dell.com/support/edocs/software/svradmin/1.9/en/stormgmt/battery.html
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