After hearing a lot about WHS, I decided to order the 120-day trial package. It actually comes with three discs. All I really care about at this point is the installation DVD. I do NOT need or want the automatic backup of client machines because all our folders are mapped to the server and that is all I worry about backing up.
It was looking like all drives must be formatted before they can be used at all. It turns out that this is only if you want WHS to assimilate the drive space and magically make it available. In my case, I already did the work with a hardware RAID card so I don't need its software helper. The breakthrough was when I discovered that no-drive letter drives are for the WHS storage space but normal drives can still have drive letters and can behave normally (like in other Windows operating systems).
So I just set it up like I did with W2K3 server, essentially ignoring the WHS component.
So far I am very impressed with it and from 0 to finished took about 4 hours. That includes installing, configuring, installing all my server apps, restoring backups, configuring, and setting up applications/titanium network drive. My last W2K3 server installation met tons of problems and I spent around 20 hours reinstalling and setting it up.
Now I'm running on a single 320GB drive. I would like to get a RAID5 configuration going on the three main drives and I may in a few months when I need to buy the full version. I'll probably just reinstall the server apps at that point. Maybe I'll investigate the connector application and see what it could help me with.
So the key to this whole project is whether or not my RAID array regains its once seen 400MB/sec data rate. Unfortunately, it entered degraded status this morning due to a hard drive failure. It was only at 45% and I dared not start a major OS change in a degraded state...but I knew this week would be very busy and I wouldn't have much time...so I paused it and went ahead with the install.
In the degraded state, I estimate data duplication rate of 100MB/sec. That means 100 read + 100 write...and its in its degraded state. So it seems somewhat likely that I will see satisfactory results. Also, when fast forwarding with MC on our HTPC before (W2K3 server) it would stutter. I just tried it and it FFed at 100x with no visible slowdowns (and its rebuilding, too).
I'll just keep running with it for a while and would really like to set it up with the OS on RAID5 but I'll only do that once I commit to WHS because I'm keeping my W2K3 server drive untouched so I can revert if I need to.
I guess the way I look at it is that it seems like everything in W2K3 server that I care about but with the WHS stuff I am not interested in at this point. All the updates are for W2K3 server and upon installing, I am greeted with over 30 total updates (I get everything). I'm going to let my RAID finish rebuilding and then I'll install them because reboots are rough on the rebuild process.