We have two servers (ML530 G2 and DL380G2) w/ identical HP 10K RPM SCSI drives w/ a raid 5. One is decommissioned and the other will be decommissioned shortly. However, one of the drives on the production server had a drive failure. My hope was to take one of the drives from the decommissioned server and pop it into the production server. Both are running RAID 5.

I broke the array on the decomm. server. To my knowledge, that should have wiped out all the volume and partition information. However, I do not know if it is safe to then take a drive from the decomm'ed server and replace the failed drive.

Will the existing array see it as a replacement drive, wipe it and rebuild? Or will it fail because it was used in an array before.

Are there any remnant data that resides on the drives after deleting a raid 5 array?

These servers are 10-15 years old, so we're just trying to keep them alive until we decommission it. I'm not looking to pay a premium to find a vendor that still sells replacement drives for this system.