topic Re: Array 6402 in Disk Enclosures

Array 6402

Colin Avery_1 — Wed, 19 Sep 2007 07:34:03 GMT

I have a HP Proliant ML350 G3 with the above raid card. The server currently has 6 x 72 hot swappable drives (maximum for this server). I need to upgrade the disks to 146 Gig drives.
The question is this. My boss has asked wether we really need to swap all of the 6 drives for new ones. Would we get away with only swapping 5 of the drives and leaving one slot empty.
I am really not sure how this would work.

Re: Array 6402

Rob Leadbeater — Wed, 19 Sep 2007 07:58:41 GMT

Hi Colin,

The probably depends on how the drives are configured at the moment.

If for example the 6 drives are configured as 3 RAID-1 mirrors, then it would probably be difficult...

Hope this helps,

Regards,

Rob

Re: Array 6402

Colin Avery_1 — Wed, 19 Sep 2007 08:02:17 GMT

Hi Rob

the 6 drives are configured as raid 5 ADG.

Regards

Colin

Re: Array 6402

KarloChacon — Wed, 19 Sep 2007 22:18:00 GMT

hi Collin

I don't think that is possible why?

right now the parity and data for the RAID 5 is spread along 6 HDDs so using 5 HDDs you are going to lost 1 HDD for data and parity so there is not way to pull that data and parity to less HDD on the other hand if they were 7 HDDs yes you can

regards

Re: Array 6402

KarloChacon — Wed, 19 Sep 2007 22:19:45 GMT

also check this

http://urlao.com/RAID5

regards

Re: Array 6402

Prashant (I am Back) — Fri, 21 Sep 2007 07:06:58 GMT

Hi,

But if all disk are not of 146GB then they will work on 72GB.

Process for moving from lower -> higher capacity disk.

Note: take backup then do it. This link is for Netserver. But WORK'S GR8 FOR PROLIANT ALSO. I have checked it by myself
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=lpn14582&locale=en_US

Prashant S.