After resetting the USB speed on the system board from USB 2 to USB1.1, we were able to boot from the DOM and are back in business, volume groups, logical volumes and most importantly data are all good. That was a very interesting 12 hours!

While this is excellent news short term, does it mean the DOM is on the way out and should be replaced?

I have suggested to management that we upgrade to DSS - if we do upgrade, does that come with a DOM? Also, where is a good upgrade guide for DSS to be found?