topic Re: RAID Questions in ProLiant Servers (ML,DL,SL)

RAID Questions

ops1453 — Fri, 11 May 2007 04:30:21 GMT

I have two questions regarding RAID arrays.

First, is it possible to swap arrays between servers? I have a DL380 G4 where the data array is RAID-5 using 4 36GB drives, and a DL380 G3 that has a data array in RAID-1 using 2 146GB drives. I would like to physically swap the arrays between the machines. (Both servers have an OS RAID-1 array.) Is this possible without major problems?

Second, is it possible to migrate a RAID-1 array to RAID-5 after adding a couple of drives? I have thought about adding two drives and taking one of the mirrored drives to create a RAID-5 array, then copy all the data to from the old (now unmirrored) drive to the new array and then turning the old drive into a spare for the new array. Is there a more direct (and possibly less risky) method?

Thanks!

Re: RAID Questions

Mauro Rusignuolo — Fri, 11 May 2007 06:33:32 GMT

Hi,

about the first question ... it's not so clear for me.

try to take a look at this link - page 25

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00440340/c00440340.pdf

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about the second question, on-line raid level migration it's possible.

take a look at this other link:

http://h18004.www1.hp.com/products/quickspecs/12247_div/12247_div.html

I'm supponing you are using a smartassray P600 ...

bye.

TJK.

Re: RAID Questions

ops1453 — Fri, 11 May 2007 11:39:52 GMT

Regarding the first question -- I want to physically move the drives from server to another and vice versa.

I'm just using the embedded RAID controllers, not the P600. For the G3 I think that's a 5i and for the G4 I think it's the 6i.

Thanks, though.

Re: RAID Questions

Mauro Rusignuolo — Fri, 11 May 2007 11:47:34 GMT

also, 6i support on-line raid level migration.

also (I'm quite sure), it's possible to move a complete array from one server to the other.

take a look at this link:

http://h18004.www1.hp.com/products/quickspecs/12030_div/12030_div.html

bye.

TJK.

Re: RAID Questions

Igor Karasik — Sat, 12 May 2007 04:57:53 GMT

Moving RAID with OS from G3 to G4 possible, but not trivial

Look this thread:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=947370