Those who don't want to buy a turnkey NAS solution can build their own with the help of FreeNAS.
FreeNAS is a free NAS (Network-Attached Storage) server, supporting: CIFS (samba), FTP, NFS, AFP, RSYNC, iSCSI protocols, S.M.A.R.T., local user authentication, Software RAID (0,1,5) with a Full WEB configuration interface. FreeNAS takes less than 32MB once installed on Compact Flash, hard drive or USB key. The minimal FreeBSD distribution, Web interface, PHP scripts and documentation are based on M0n0wall.
FreeNAS Tutorial for Windows Users : http://www.lagesse.org/freenas-tutor...-installation/
FreeNAS Tutorial for Windows Users Part One Installation installing the FreeNAS server onto a PC. (this post)
FreeNAS Tutorial for Windows Users Part Two Configuration configuring FreeNAS and Windows File Sharing.
FreeNAS Tutorial for Windows Users Part Three Upgrading Upgrading your FreeNAS Server.
Using Microsoft SyncToy 2 with FreeNAS Automating your backups for free.
FreeNAS Tutorial for Windows Users Part Five XBOX 360 Using FreeNAS with your XBOX 360
FreeNAS Tutorial for Windows Users Part 6 Adding another drive