AHCI mode adds hot-swap support, NCQ, and sometimes some better power management functionality. It is not "needed" for 2T drives. 3T gets a little more interesting.
The 7K2000 2T Hitachi is not advanced format, but there seems to be confusion as to if the newer 5K3000 and 7K3000 drives (available in 1.5, 2.0, or 3.0T capacities) are. Hitachi's documentation provides zero indication that they are AF, but some third party sites that picked up the release announcement claim they are. I personally suspect that they are regular non-emulated 512b sector drives. Hitachi has some laptop drive models that are AF, and it's quite clear from the specification documentation. I have 4x 5K3000's, 6x 7K2000's, and 6x 7K3000's (all 2T) myself. Great drives. > -----Original Message----- > From: [email protected] [mailto:hardware- > [email protected]] On Behalf Of FORC5 > Sent: Sunday, March 27, 2011 12:49 PM > To: [email protected] > Subject: [H] is ahci needed for 2tb drives > > subject is the question. > > Any advantage to AHCI over STANDARD ide. Been enabling AHCI but found > out my backup SW does not like it. Backup drives require a repair to boot. No > major big deal but a step I should not need to take. Company is working on a > fix for that and advanced format drives which these are not. 2tb Hitachi. > AFAIK not advanced format but I am going to check. > > thanks > fp > > > -- > Tallyho ! ]:8) > Taglines below ! > -- > This ain't as good as sex---but it's safer these days.
