All the anguish brought on by this kind of situation brings us back to the old issue of sites lacking guidance in the area of data architecture, as should be promulgated by an IT department. What we are collectively seeing in all these companies is departments buying the new, large (160 GB+) hard drives or disk arrays now on the market and implementing them as one, single, huge storage area, with no thought to the realities involved in the decision. This is largely a problem in the Windows arena, where this often derives from people having had basic experience with a personal computer and who simplistically extrapolate when outfitting larger systems. This is in contrast to the Unix environment, where there is pre-existing conditioning to sanely subdivide disk space by functional categorization and keep file systems manageable.
Do whatever you can to stem this poor practice... Feed back to the responsible department; bring it up at meetings; raise awareness in company publications. Carving out multiple volumes allows for categorization and easier administration by their owner, and certainly facilitates backup in terms of time schedule and parallelization opportunities. If necessary, analogize the issue: does one implement a 15-foot high filing cabinet, or three 5-foot high cabinets? It's about practicalities. We TSM administrators need to make ourselves conspicuous in decision making, not be willing victims of uninformed decisions. We safeguard our organizations' data, and can do that only if sane data architectures prevail. Richard Sims