I think this question belongs in this forum.

We have a dedicated NW6 SP4 iFolder server sitting on old hardware. The
iFolder database sits on an external RAID subsystem.

We want to upgrade to NW6.5 and onto new hardware. What's the best way to
go about this? Can one do an across-the-wire upgrade in this scenario? If
yes, how would we do this, re-install iFolder and connect to to the
iFolder database we had on the old server?