On 12/24/02 12:15 PM, "jeff small" <youaregod at attbi.com> wrote: > Thanks ahead of time > jeff in seattle > > Answered: > > Hey Jeff, > > IDE only access' a single drive per channel at a time. Damien's > point is that when you add a second drive it is best for performance > to add that drive to the second channel as that channel's Master > drive so that both drives on the computer can access concurrently. If > both drives are installed as Master/Slave or Cable Select on the same > channel/cable then they would alternate access and be half as fast > when both are active. Very interesting. I'd not read previously that if there are two drives capable of ATA 100 that one should be on the ATA66 bus. I wonder if there are any tests that have been done on this by Mirrored Doors dual 1 gig machine owners Jim Robertson --