dell equallogic volume offline

We have dell eqaullogic arrays in group.
One device had disk failure and the volumes went offline.

How can I bring the offline volume back?
Will it bring the volume online if i replace the disk?
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sara2000Asked:
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kevinhsiehCommented:
Volumes should not have gone offline if the array was healthy beforehand.

What does the GUI show for drive status for all members? What is in the event logs for the group? They should say why they went offline. Do you or did you have hot spares?

Are they under support and have you contacted Dell? I have lost probably a dozen plus drives over the years and never had it cause an issue with my Equallogic arrays going down.
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sara2000Author Commented:
We have two member in the group.
one member of device went offline due to disk failure . i see two disk got amber light, most probally i lost the data if two disks in one raid bad !! I have a good backup and do not care.
I never had experiece  of member going offline other than controller issue.
I have spare disks, how can i bring the member online?
Replace the disk,not reboot etc
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kevinhsiehCommented:
What is the raid level? If you lost 2 drives AND the volumes went offline that probably means that you lost more drives than what the array could sustain and keep your data available.

Did both drives fail at once? Were you using RAID5? RAID5 is the only configuration that I can think of where you would only have 1 hot spare. Dell recommends that you not use RAID 5 and they have removed that option from later versions of the GUI.

You need to replace all failed drives. After you replace the failed drives, see if the volumes can be brought back online.
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sara2000Author Commented:
i have lost data since multiple disks failure. It is strange
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