Reformat RA81/82?

Can RA81/82 disks be reformatted in the field? If so, is this done through XXDP or is there a way to do it from the disk's serial port? My RA82 occasionally lights its FAULT light and extinguishes its ready light during write operations. The likelyhood of it faulting appears (but I am not certain) to be correlated with a specific region of the disk. About five-ten seconds after the fault, the FAULT indicator turns off and ready comes back on. At no time is an I/O error generated that the application or the operating system (2.11BSD) see so this fault appears to be transient and is resolved by either the drive or the drive/controller together. It "smells" like a data write error that's resolved after a few automatic retries. I'm hoping a low-level reformat could clear it up. Am I wacked out? If there's an XXDP exerciser/formatter available I'd appreciate it if someone could point me there. It's been nearly twenty years since the last time I even tried running XXDP Thanks as always, greg p.s. The RA81 drive on the same controller never gives any trouble (yet). I've tried some more basic things like swapping SDI cables and drive ports but it doesn't make a difference. Gregory Travis Cornerstone Information Systems ATS greg(a)ciswired.com 812 330 4361 ext. 18