Replacing RAID1 Drive on Dell Poweredge 2900

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Good Morning Experts,

I have a Dell Poweredge 2900 with a RAID 1 and a RAID 5 configured.

One of the drives in the mirror RAID1 has failed.  The new drive has arrived.  This server is very old and no longer under warranty.

In the RAID 5 config, I can select to take the disk offline but cannot do it on the failed disk in the RAID 1 configuration.  Only, blink and unlink.

Can I remove this disk and replace it with the new one while it's running and it will regenerate?  In Open Manage it says the disk is failed and on the front of server orange light blinking.

Thank you,

Karen
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Distinguished Expert 2017
Commented:
Yes, the drive has already been marked as failed. Pull it and insert the new/replacement and the rebuild will start shortly there after.
The system must be running, do not poweroff the system to replace the drive!

If you have available drive position, you could insert the new in the available slot and add it as a hot spare at which point it too will be .......... Used to rebuild, but it will....
noxchoIT Product Manager
Top Expert 2009
Commented:
Yes, you can do the replacement. If the drive is empty the RAID mirror will be rebuilt automatically.
I guess you do take backups for any case, don't you?

Author

Commented:
Thank you everyone.  That was the most painless task I have had today.  It concerned me because there was no option to take it offline as in the RAID5.

Thank you very much, glad I asked.
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Distinguished Expert 2017

Commented:
Fail drive option is only available when redundancy exists.
Dell uses percs and those are auto sensing the removal/addition of drives after failures and begin rebuilds.

HP and possibly IBM were the only that had to have the option in the HP insight/IBM director that required the pre-notice indication that the drive marked as fail is being removed.  If forgotten, triggering the rescan of the controller ...... Was needed to clear the state of the hot-swap disk position as currently failed.

In hot swap cable devices, replacements must be done online.

Author

Commented:
Thank you very much.  I just wanted to make sure.  Unfortunately the drives in this server were manufactured in 2005 and I only last week demoted it as a domain controller because I was afraid of just this happening.  It's backed up, but still didn't want to just yank it without asking someone.  

Thank you all very much.

Karen
PowerEdgeTechIT Consultant
Top Expert 2010

Commented:
It concerned me because there was no option to take it offline as in the RAID5.
A failed drive is already 'offline', so it can't be an option.

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