RAID 5 - Logical device failed

Hi,

Adaptec 2420SA controller, Windows storage server 2003, HP Proliant DL100G2.

We have 4 disks, 3 logical devices using RAID 5. One disk failed, therefore we replaced with a new disk.

Problem, once replaced the disk the logical device 3 failed and logical device 2 and 1 are now degraded. Looking via Storage Manager the new drive is only part of logical device 1 and 2 and not 3 as it should be. All disks status are optimal. We can boot the system up for the OS is on logical device 1 however all data is on logical device 3

I know you can use RAID Reconstructor but I cannot see the disks under windows disk management so the RAID reconstructor will not work.
Is there a way to rebuild the logical devices without Data loss ? Can I take the disks out and plug into another RAID controller ?
LVL 1
ranskiAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

xutiCommented:
Hello,

Have you tried to see the current configuration of the controller before starting windows? Try to access into the controller menu and check how many logical devices are there.

You can plug the disks into another raid controller but you must ensure that the other raid controller is the same manufacturer and model as the old one.
0
gikkelCommented:
Even if you cannot see the hard drives under windows disk management raid reconstructor should still be able to the drives.  Since the drives are SATA drives, you can easily put them on a different controller to be recognized.  Do NOT attempt to recreate the RAID array.  Either boot from a different hdd or use a boot cd to access the drives with raid reconstructor.  If you still cannot access your data, try using the old failed hdd to attempt to recreate the array.  You'll need another drive to store the copied data.  

Did you enter the controller bios to determine whether the drives are correctly rebuilding?  Some controllers do not automatically initialize new drives and need to be set manually.  Are your hard drives different sizes?  If logical device 1 and 2 are accessible, it may be possible device 3 was not in the raid array and therefore only on one hard drive.  Do you know how they were setup?
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
ranskiAuthor Commented:
sorry
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Storage

From novice to tech pro — start learning today.