Thank you for your responses.

I do have the old SAN as that site is now the backup/mirror site. I don't think a lot of the users would like it as most of them are on the prod site in a faraway location (which would make everything slower for them since they have to go over the shady WAN (we're supposed to have 45 Mbps, but we're getting much worse bandwidth which is an ongoing fight with the ISP)). Maybe I can dig up some old PerfMon counters...

I have sent the PerfMon counters over and I've seen it as high as 100,000 for Avg Disk Queue Wait for Writes. Their recommendation is creating another LUN and moving six tempdb data files to that LUN. After thinking about it, it really won't change anything since both tempdb data LUNs would be on the same SAN, would it? This is on a cluster so I really would like to make sure that that is the correct approach and not just trying anything that comes to mind. 😛