[CrLf]

"The RAID card writes DCBs on disks that are read by the new RAID card upon replacement."

Which also makes for very nice RAID failures, like this one that has happened to me on an HP controller:

A drive fails because of some SCSI electronics problem and when you replace it, the controller gives it a different SCSI ID. Now, the controller maps RAID arrays to drives, and it is now impossible to add the replacement drive to the degraded array because SCSI IDs in these controllers aren't user defined and the controller doesn't allow the degraded array to be modified.

And since the controller has now happily written it's configuration onto the drives, it doesn't matter that you shuffle the drives around to try to force the controller into giving up it's internal configuration.

Oh, and the controller is an onboard controller, so you can't just replace it with another one (which would also read the configuration on disk and put himself in the same stupid state, I suppose).