Done some research on which SATA drives are noisy and which are quiet. This is based on my own ears an in a Shuttle XPC machine. No soundmeter or anything just my own ears, but I'm the type of guy who rips his car apart when he hears a rattle: Best are the Hitachi SATA Desktar 7K2 disks, these are slient at idle and make a low noise whilst seeking, You can enable AAM on these discs to slow down the seeking which reduces the noise further, but you get some performance hits. Next is the Maxtor SATA drives, a little bit more noisy and no AAM support, mostly an issue during large seeks and writes. Next is the WD Cavier 36G sata drive. This is more noisy and you would spot this a mile off in comparision to the other drives, blistering performance but noisy. Last is the Seagate Barracuda 7200.7. These are really noisey - great discs and build quality but the noise is terrible. Couldn't get a sample of samsung to test but I've heard a lot of positive things about them. Keeping the Hitachi Deskstars, 2 80G in a RAID 0 setup. Neil.