This is funny. I was scanning the forums tonight and clicked on this thread completely having forgotten that I started it. Sorry I never followed up but in case it can help anyone here goes.
I found servers were too slow for what I wanted to do. I was not able to bring up an entire Lightroom catalog and start working it like I could from an external drive. It was great for backing up but not a solution for what I was looking for which was to be able to work my images from either a PC or MAC format and be able to work it from any room in the house having everything stored in a central location.
As it turned out my conversion to a Mac was not meant to be. My Mac hard drive crashed 3 months into ownership. It had been stalling and stopping almost since I got it and that turned out to be the reason why. While I loved the great screen the frustration from the product soured me and since Apple would not accept a return I sold it.
Once your business reaches a certain volume an iMac is hard to use because it only has one internal drive. It's also difficult to have to be without your system when just one component like a hard drive fails. I could see a Mac Pro being a good altenative, but not an iMac.
My solution was a new PC. I built a new system with components from NewEgg; Asus Sabertooth X58 motherboard, Core i7 3.06 CPU, 6 gigs RAM (expandable to 24), 4 hard drives ( 1 for the OS, 1 for the programs and 2 - 2TB SATA 6 drives running in RAID 1)
I love the RAID setup. This way my backup is built in. When the two - 2 TB drives gets too full as I start shooting more video I can switch to a bigger - faster RAID.
Sorry it took me 9 months to get back here to report. I hope this can help someone else. Oh! And I did use a Radeon 6870 video card so I can always switch to a new Mac monitor when I go to upgrade again.