Originally posted by doodle dee
correct me if im wrong, i always thought you should keep your HD on one channel and your optical drives on another. I thought if you have a HD and CD-rom drive on the same cable, the transfer rate will default to the slowest item connected to it. so say you have a old cd rom thats ATA 33, wouldnt that make the HD run at 33 instead of 100 or 133?
That has been the mantra for the past fifteen years or so. I should do an experiment to see how valid that is nowadays...
At any rate, the idea is that if the slower CDROM is using the channel, then the HDD has to wait until the channel is freed up before it can do its thing. If we are talking transfers between the CDROM and the HDD on the same IDE cable, then that can slow things down considerably.
One of the advantages of the SATA specification is that each drive has its own channel and this problem is eliminated.
If we are talking about having two HDDs and a CDROM, then it would make sense to place the second HDD on the same channel as the CDROM rather than with the other HDD because of teh same truism-- on different IDE channels, both drives can write at the same time (nearly, let's not get into the serial-task nature of computers here). THis is particularly useful if the second drive happens to carry the swap file on it.