Disk Fialure in RAID... Replace drive quick question ASAP

Hello all... I have a disk that failed in my RAID 10 6 drive setup.... My question is I have an exact match drive however I think it has data on it from an old server no longer in use... Can I stick this disc in and it will auto repair over the old data? Just making sure... I assume it will but do not want to screw anything up as its my database server...

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Seth SimmonsSr. Systems AdministratorCommented:
yes it will rebuild over whatever is currently on there
however, if it was used in a different array before, might show as foreign config.  if it does, clear it on that drive and it will be usable to rebuild

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andreasSystem AdminCommented:
And last but not least. A RAID no matter what lavel, is no replacement or a backup.

If that data base server is that impartant you should consider to replicate the databast to a second system in case one break down.
It depends on the RAID controller, but usually you have to assign used disks as hot-spares. Then they will start syncing. Only fresh, empty disks will usually start syncing automatically.
It depends on the controller, but the rule-of-thumb for the bulk of controllers (including LSI and most Dell) is that if the firmware running on the controller is same make/model family on both controllers then the disk is at risk of being rejected as foreign.  But rules vary and depends on firmware revisions of  controllers.

If you want to avoid that, simply put the disk in a non-raid controller and use dd to wipe out the first 64MB or so. This takes all of 1 second if you are running a unix/linux O/S.  (dd if=/dev/zero of=/dev/sdb bs=1024k count=64.   (Substitute /dev/sdb for appropriate path).
gsswho6Author Commented:
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