Sandeep says Windows SBS 2011 Essentials is on sale at NewEgg. Well, it sort of is -- and I am intrigued by his arguments in favor of a server-client network for AC (of course, the peer-to-peer, built-like Topsy network I have been using is working just fine, so it is hard to see what I gain other than bragging rights.)
I downloaded a trial copy of the OS -- and right off the bat, there are problems. Nowhere can I find the hardware requirements! I want to try it out, but I don't happen to have a high powered machine lying around, so will it work on an ordinary dual core machine with 2GB memory?
With Server-Client, you have more control over permissions. Who can access what computer/folder, who can delete something, etc.
Single Sign On, logging into your windows account will give you access to your email (assuming you have Exchange), files, etc. If you have multiple computers, you don't have to configure each one individually.
Backups. SBS 2011 automatically backups up all client computer data. Most offsite backup services only allow you to use their plan on one computer. Also, one server is easier to backup than several workstations and "main" computer.
Software. Be able to deploy software to local machines via Group Policy. Or set up shortcuts. Configure WDS to deploy premade images of Windows 7 to any new computers.
Automatic setup of remote desktop for all computers on the LAN, etc etc. RWW over port 443. Widely recognized SSL port. Rarely blocked.
Watch a Vid of the setup video in my signature. I could go on and on.
One 1.4 GHz single core (64-bit) or dual-core 1.3 GHz or faster processor.
2 GB RAM
At least one160 GB hard drive.
On that last one. You will get an error during setup if you don't use a 160 GB drive. You can change that though. Do it before you burn the disc/load the iso.