you can't use web edition because the licensing model is completely different. CALs are on a unauthenticated basis, meaning it will be no good for Exchange, F&P etc..
Also you have the added cost of buying Exchange when it is already included in SBS.
Stick with SBS, buy the server now eval both products and buy which ever fits the business when the time is right.
Certain suppliers are selling the ml 115 g5s bundled with server 2003 sbs for 298 + vat, I dont think you can get a copy of sbs for less than that on its own, even oem unless anyone knows better?
Got mines yesterday, unfortunately the RAM I got (PC2-6400 Non ECC) does not work on it, so ordered some Kingston 2gb ECC modules. It has another 750gb drive, plan to add another few drives at some point when I need the space.
Put Windows 2008 Enterprise x64 on last night, had a scare as the first try to install failed, but it was because I downloaded the wrong image from MSDN. Used the HP Disk to isntall and was painless.
Surprised at how fast it runs even on 1gb. Primary use is for SharePoint sandbox, storage for my media and experimenting with AD, as well as any overnight processes I may need to leave running (running my main box overnight must take loads and loads of energy)
Get more RAM and use it for ESXi
then you can install multiple versions of Svr 2008 etc
I dont think I have a need yet at the moment, 4gb is more than enough for the uses I have in mind, I used to run similiar off a 2008 VM on my main box with no problems.
Might be something for the future though when I get 2x2gb modules and experiment more
PS I notice you are using OCZ RAM fine in the machine, was there anything you needed to change to make it work? I updated the BIOS amd the best I could get was it would freeze at the white boot up screen.
Edit: I imagine it is because the RAM i got is 2.1V and the board only supports 1.8V?
both are really loud on start up but quiet after. The M110 G5 has a higher default spec with 1GB ram and a 250GB drive. The 115 G5 has a 16x PCI-E slot compared to running at 8x in the 110. The 115 supports RAID5 the 110 only does 0,1 and JBOB.