ATA Transfer rates Limited?...

[Takeda]

hmm, if I have 2 devices of varying speeds on a single cable, will both devices be defaulted to the lower speed? ex, ATA100 HD + ATA66HD = ATA66 speed for both HDs?

[SkyDog]

So long as both devices are DMA-capable (ATA-33 or faster) and you're using 80-conductor cables, each device will run at its rated speed. If you've got an ATA-66 & ATA-100 drive on the same cable, they'll run at 66 & 100, respectively. Well, so long as the controller supports ATA-100.

IDE does have a limitation in that only one device per channel can be active at a time, so if you're trying to access both drives on the same channel (like copying from one to the other), then you'll notice a speed decrease.

[Takeda]

ahh, thanks, my friend mentioned something about a limitation by having both drives on the same cable, wanted to confirm.