Made my NAS system from an old c.2006 Inspiron 9400 laptop. By the time I replaced it in 2012, it could hardly keep up running WinXP and watching a YouTube video. Removed the LCD, and now have it sitting out of sight behind my main desktop PC monitor array. Working great as a OMV NAS server now with some external HDDs attached via eSATA and Firewire.
Linux version 3.2.0-0.bpo.4-amd64
Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz
Filesystem Size Used Avail Use%
sdc1 36G 2.7G 31G 8% System drive
sda1 1.9T 1.3T 633G 67% eSATA
sdb1 1.9T 1.3T 630G 67% eSATA
sdd1 466G 3.3G 463G 1% FW400
Use it primarily as a network file server, DLNA media server, Owncloud, SABNZB+/Sickbeard usenet downloader, and remote file server via SCP with a DynDNS account.