ATA 100 and ATA 66 together

[DDevine]

I'm getting a new computer with an ATA 100 bus and drive, but i have an older ATA 66 drive that i'd like to hold on to. If I connect them on the same interface, I assume that the bus will have to come down to ATA 66 for both drives. Is that correct? Will it be automatic? Does the same thing happen if you put a ATA 66 or 100 on the same interface as a CDROM?

Dan

 

[bigd480]

well, considering you can hook-up an ata/33 cd-rom and an ata/100 hd on the same ide channel, it should work also w/ an ata/66 hd... i could be wrong though...

 

[Muzzy]

Don't worry about the ATA66 bringing down the performance of the ATA100. Today hard drive can't use all of the bandwidth(?) of the ATA66 yet.

 

[bacillus]

there isn't that much of real world performance difference between ata66 & ata100 so you should be fine to have both hdds on the same ide cable.
if the hdds are on a promise ata 100 controller,devices of different standards can be connected to the Ultra-100 without performance degredation, due to the independent programmable timing registers in the controller's design.
Basically,that means that having an ata 100 hdd on the same channel with a hardware device of different rating will not degrade the hdd's performance.