I don't know if we will actually want to invest the effort to migrate the DLT-class tapes. We will almost certainly want to begin migrating the LTO2 tapes.
A tape migration facility can also provide the backbone for a disaster recovery system, if we make a modern tape robot part of the infrastructure (such as the Superloader, which unfortunately only has 1 drive).
TapeCabinetMarch2011CopyEstimates.xls I made some corrections to the 222 cabinet contents from John's 2011 originals, but I haven't checked the Chamberlin cabinets yet.