ATA33 devices on an ATA100 connector?

[AmazonRasta]

Was wondering if everything would still work right if I hooked up my CDROM (as slave) and my HDD (as master) to an ATA100 connector on my Asus A7V motherboard? Any help will be greatly appreciated. Thanks.

 

[NoreagaCNN]

Yea it'll work, but you won't be able to boot off of your CD-Rom

-Nore

 

[pm]

ATA100 is totally backwards compatible with ATA66 and ATA33 - although I believe that the speed of the connection is set by the slowest device on the chain.

 

[AmazonRasta]

So according to you PM, the transfer to/from the HDD will slow down to that of the transfer to/from the CDROM?

 

[NoreagaCNN]

It means that if your CD-Rom is ATA 33 and your HD is ATA 100, it'll make them both ATA 33 which sucks and makes no point

-Nore

 

[pm]

What I meant to say was what NoreCNN said.

 

[bacillus]

<< it'll make them both ATA 33 which sucks and makes no point >>


I don't think that statement is correct as the controller will run the individual devices at its maximum rated speed &amp; not limited to the lowest speed device! that's the case on my promise ata100 card!

 

[AmazonRasta]

Thanks bacillus!

Anybody out there know if he's right (not that I don't trust him or anything). Just like some people to back up his claim. Any/all help would be appreciated.

 

[NeonFlak]

But why put a cd-rom and hd on a raid controller together?

 

[AmazonRasta]

NeonFlak: It's not a RAID controller, just an ATA100 controller. The reason I'd like to do this is because I'm using a mid-tower, and I'd like to reduce the number of cables I'm using as they take up a lot of space and prevent good air circulation.

I'd just like to know if I can hook up my ATA100 HDD with my normal ATA33 CDROM and not lose the faster transfer rates of my HDD?

 

[skriefal]

Putting an ATA33 and an ATA100 device on the same chain will NOT force both to run at ATA33 -- at least not with modern motherboards and IDE controllers. That claim hasn't been true for several years now, so it's surprising that it's still constantly being falsely stated...

 

[pm]

<< Putting an ATA33 and an ATA100 device on the same chain will NOT force both to run at ATA33 -- at least not with modern motherboards and IDE controllers. >>


True. This isn't an issue anymore. Read here for an explanation of it at StorageReview.


<< That claim hasn't been true for several years now, so it's surprising that it's still constantly being falsely stated... >>


I personally don't think it's that surprising. For a start, it was true at one time. Second, it's true in the case of SCSI.

 

[Noriaki]

Yeah it'll be fine your A7V is new enough that it can run the master and slave at different speeds.

At one time they would slow to the slower, but that's not true anymore.

Your hard drive will run at ATA100, and your CDROM at ATA33 no problems.

 

[AmazonRasta]

Thanks all. Your help and support is greatly appreciated.