Help rebuilding RAID1 disk array

Master Skooter

Master Skooter

Master Skooter

Soldato
Joined
19 Oct 2002
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Somerset
Hiya

at work we have an ASUS server running Windows 2003 Server, it must be at least five years old therefore out of support.It has two drives configured as a RAID1 array, one of the drives recently failed. I purchased a replacement which I've installed.

The problem I have is I'm not able to rebuild the array. The new drive is listed alongside the array but within the array itself it's showing the old drive as 'Missing'. I've no experience with RAID arrays at all and wondered if anyone may be able to help me rebuild the array. I've taken a few pics which will hopefully make my ramblings a little clearer:






Many thanks in advance
Scott
 
Hmm odd - so you've replaced the disk and its still showing as missing? From what i can see on the last image, once it detects the disk you should be able to simply click "(R)ebuild" and it should copy across to your new disk as part of the volume recreation.

Worst case scenario as its only a 74GB volume is dd the image off, flatten the array, re-create and dd it back.
 
Hi, thanks for looking.

If you look at the third screen shot down, the replacement Seagate drive is listed below the array as 'Free'. But it's greyed out so can't do anything with it. The only options I have are shown in the array settings (screen shot 4), these are 'Delete' or 'Bootable'.

The machine does have 4 drive bays, I'll try the original drive/replacement in one/both of the others.

SMN, what do you mean by 'dd'?

Cheers
Scott
 
My 2p

The old drive totals up as 74GB - the new HD you've put in totals up to 73GB (picture 3) so the RAID controller won't rebuild as the new drive is too small.

I've seen it before from trying to replaced a failed Maxtor Atlas 10k III (70148MB) with a Seagate Cheetah (70007MB).
 
That is a very good point, dives need to be same size or larger. The drive was recomended by Insight as a replacement for the obsolete Maxtor.

I'll ring Insight, thanks.
 
Insight will take this drive back and we're going to try a 147Gb drive, which is the next one up storage wise. Would the drive need to be formatted to a smaller size?
 
buy a £30 copy of acronis, image the server

remove the working drive

install two new drives @ ~£60 - £100 each

configure the raid, make the mirror 10% smaller than the largest possible size

blow the acronis image back,

job done

if another drive fails any drive of the right size should do as the 10% reduced size give you a margin for difference in size
 
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