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Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

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DmB.UK
Occasional Visitor

Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

Hello,

I've got 370G2 with broken RAID1 (one drive is faulty). I have to migrate that array to new bigger one. My plan is following:

1. Install Acronis True Image on current OS (W2000)
2. Install 2 additional drivers, create second array (RAID1)
3. Boot OS and perform cloning from old array (drive) to new one
4. Boot from new array (is it possible to choose array (logical drive) to boot from?)
5. Remove old array


Could you tell will it work? Can I roll back system after I pull out old drivers and pull them in again?

Thank you very much in advance
Dmitry.
5 REPLIES
Brian_Murdoch
Honored Contributor
Solution

Re: Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

Hi Dmitry,

0 - Fix the bad disk first in case you lose everything. Insert a replacement at SCSI ID 0 and it will rebuild automatically.

Then......

1,2 and 3 OK.

Swap 4 and 5. Physically remove the old drives, move the new ones into SCSI ID 0 and 1 and reboot. The Smart Array controller will recognise the changes and prompt you to accept them.

Acronis image copy from mirror to mirror should be OK. I had a problem doing mirror to raid 5.

It should then boot OK.

The old drives can be re-installed and work OK if anything goes wrong. Don't use ACU or ORCA (BIOS) to delete anything.

Regards,

Brian
Pieter 't Hart
Honored Contributor

Re: Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

simpler without any aditional software:
1)replace the defective drive with a bigger one
2) wait for rebuild of the raidset to complete
3) replace the good drive with the bigger one
4) again wait for rebuild to complete

you now have a raidset with bigger disks. Only the extra size is not utilized.
You could be sattified with this situation, the raidset is operational again.

to utilize the extra space:
5) go into ACU and extend the size of the raid array

Windows should see the extra space on the disk. W2k3 can see this auomatically w2k maybe needs a reboot.
6a) you create a second partition to use the space as drive D:.
6b)you use diskpart from the w2000 resourcekit http://download.microsoft.com/download/win2000platform/DiskPart/1.00.0.1/nt5/en-us/DiskPart_setup.exe to extend the partition.
But this is not supported by microsoft. sea this forum on "expand disk"

http://www.google.nl/search?hl=nl&q=Can+I+expand+a+drive+in+Windows2000+Advanced+server+site%3Ahp.com&meta=
DmB.UK
Occasional Visitor

Re: Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

Hi Brian and Pieter,

Thank you for your advices. You made me feel more confidence.

I think I'll try cloning first, if I get no success I will follow Pieter's option.

Regards,
Dmitry
RaMpaNTe
Trusted Contributor

Re: Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

Hi DmB.UK
Peter's option is safe and reliable, if you want to save time you may go ahead and try that one.
You heve a question... I have an aswer!!!
DmB.UK
Occasional Visitor

Re: Broken RAID 1 on ML 370G2 -> new logical drive (RAID 1)

Thank you all for help.

Actually I did it at weekend by following way:

1. Installed Acronis True Image on current OS (W2000)
2. Installed 2 additional drivers, create second array (RAID1) - SCSI ID 2,3
3. Booted OS and performed cloning from old array (drive) to new one
4. Physically removed old drivers (SCSI 0,1). System didn't boot from new array. I suppose, controller stores SCSI configuration itself and always trying to boot from first logical drive.
5. Moved new array to SCSI 0,1. Smart array said that "0 logical drives are present, drivers are misplaced. Move to original position".
6. Eventually, when second drive from original broken RAID has gone too, I was forced to delete first array and logical drive :-)
7. Booted from new array (at SCSI 2,3) and ... lucky I was, system loaded!

So, it's possible to clone RAID1 -> RAID1 even source array has faulty drive.


Dmitry.