I bought this drive to go into a Netgear ReadyNAS as a partner to another that Amazon had sent in error (should have been the EADS not the EARS). The WD10EARS is not on the hardware compatability list for the ReadyNAS so I was quite worried that I'd have problems and indeed I did start getting SMART disk errors virtually every day from the ReadyNAS. A quick look at the Netgear forum was enough to realise the errors were not serious and were only because these "green" drives don't use one particular feature and so genereate an error. Netgear has since released new beta firmware which makes these drives compatible and the errors are gone. So, if you are considering one of these drive to go into a Ready NAS, you will not be dissapointed, they are very quiet (much quieter than the NAS itself) and very important, compatible. If you just want a fast, quiet drive for your PC with green credentials then these won't dissapoint.