Thank you for the response. Your reference to the D20 Service pdf was particularly valuable.

I was able to find an associate that works within a few miles of the location who will remove the D20 for me. We have already relocated two hard disks from the D20 to the 7028. Once all of this is done I will be able to migrate the data and functions from an F50 and a P620 to the 7028, then shut down those boxes.