RE: [cobalt-users] Re: RAID failure

["Tunc Eresen \(¯`·.¸¸.-> " <tunc@xxxxxxxxxx>]

Hello, 



Subject: [cobalt-users] Re: RAID failure


Hi Tunc,

Regarding your question on the RAID... did you receive an Active Monitor e-mail
alert that indicated which drive had failed? Our alert e-mail said "drive 1" had
failed --- which was the primary. (the 550's w/ RAID have a primary drive which
mirrors to the secondary drive and I believe it is marked on the chassis as "1"
and "2")

We just had a drive fail on a fairly new Raq550 that we purchased and had to
replace it this week. It was under warranty, so we called Sun and they
overnighted us a replacement drive.

One thing to be careful of is this, per our conversation with Sun. They said to
first power down, remove the bad drive. If the primary drive failed, they said
to move the mirrored secondary drive -into- the primary drive position and
restart again with just that drive in the system so that it "recognizes" the
drive properly.

Then... power down, put in the fresh replacement drive into the
-secondary- drive position
and then restart once more and it should mirror properly. Ideally, they said
that this process should not be necessary and that it will auto-detect
everything correctly but ... honestly, I will happily err on the side of caution
and do it the "ultra safe" way since it only takes a few extra minutes.

The big thing that you want to avoid doing is accidentally mirroring over the
new (empty) drive over top of the drive with data on it. I would really suggest
just calling them and reviewing these steps with them directly to make sure
since I don't know which of your drives (pri or sec) failed... and you'll
probably need to call them anyways to get them to send out the replacement.

Thanks,
- Chris



Hi 
When I rebooted the server, Server Started and finished rebuild its raid, It was
second drive - What a luck!!!
Now it is working for 20 hours without a error.
Thanks for the help
Tunc