Brug FreeNAS -
http://www.freenas.org/, find en gammel computer med nok harddisk plads og installere 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."
Så dette er kort sagt en god nem billig løsning, hvis du ikke er bange for selv at sætte det op og spare lidt penge.