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August 27th, 2014 02:00
Recovery Solution for CX4
Hi All,
I have a Dell CX4 Service Tag: <ADMIN NOTE: Service tag removed as per privacy policy> | Express Service Code: <ADMIN NOTE: Express service code removed as per privacy policy>
Wich was with is had 3 group of Raid, (Two Raid 1+0 and one Raid 5) and it had 3 disk with problem, i ordered the disk and the day the disk arrived before i change the disks the fourth disk failed and the storage became inaccessible, then someone pulled off the the 4 disks while the storage powered on and then switch it off without the disks in there, and after that he changed the disks with the new ones, now my concern is, is there any possibility of the data be LOST? if so please explain to me why.
help please
http://en.community.dell.com/techcenter/storage/f/4466/t/19597726.aspx
DELL-Sam L
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August 28th, 2014 09:00
Hello Maiala,
First off whenever you replace a drive on the san you want to do it with the san up & running. The reason is that you need the replacement drive to start & complete it’s rebuild of the array. If you power off the san before the rebuild can complete and you have another failure of the drive then you could lose your data as it might not be able to rebuild the array.
Also with replacing the other 3 drives while the san was powered off could cause you to have data loss as the san will try to rebuild all the drives when the san is powered on or it may not be able to rebuild the other arrays. What I would do first it to put the 3 drives back in to the san in the exact same slots that each drive was in. Once that is done then log into Navisphere/ Usphere & check the drives & see if they are still showing as faulted. If the drives are still showing as faulted the replace the drives one at a time and wait for the rebuild to complete before replacing the remaining drives. If after all the drive have rebuilt then you will need to check your array drives to confirm you can access them & retrieve the data.
Please let us know if you have any other questions.