We have (2) drives
G:\ = AutoCAD support files, plotters, lisps, templates, etc. This is constant so no worries here.
I:\ = Project drive, this is the problem drive. Every 100 new projects numbers, the oldest 100 are archived to a separate long term storage array. Occasionally we need to access these projects for revisions, reprints, etc.
Once the project folder is moved the referenced TIFF link is broken. If the attached file is a .dwg, AutoCAD allows relative paths but Tiffs/PDF's appear to be absolute paths only.