mixing ATA drive speeds

[cw]

I have an UDMA133 hard drive as master and a UDMA 66 as slave on my WinXP
system.

Can the slower drive affect the performance of the faster one, please?

cw

 

[Bob Willard]

I have an UDMA133 hard drive as master and a UDMA 66 as slave on my WinXP
system.

Can the slower drive affect the performance of the faster one, please?

cw

With any relatively modern MB, the PC maintains independent timing
tables for each HD on each IDE bus, so each HD runs at its own
best speed. XP did (and maybe still does) top out at 100 MB/s
instead of 133 MB/s, but you'll never notice the difference because
the fastest IDE HDs are in the 60-65 MB/s range.

So, if your MB supports U/133 or even U/100, sharing an IDE bus with
an older U/66 HD will not force your U/1xx HD to run at U/66 speed.

 

[Folkert Rienstra]

So you want to run the UDMA133 drive to run at UDMA66, is it?

With any relatively modern MB, the PC maintains independent timing
tables for each HD on each IDE bus, so each HD runs at its own
best speed. XP did (and maybe still does) top out at 100 MB/s
instead of 133 MB/s, but you'll never notice the difference because
the fastest IDE HDs are in the 60-65 MB/s range.

So you WILL notice the difference when you run them in RAID or do
simultanious access.

 

[cw]

Thanks for your help, guys.

Who needs RAID anyway? Seems like overkill to me.

 

[John Turco]

I have an UDMA133 hard drive as master and a UDMA 66 as slave on my WinXP
system.

Can the slower drive affect the performance of the faster one, please?

cw

Hello,

Unlikely, unless your mainboard or controller card (if any) are very
old.

Good luck!


Cordially,
John Turco <[email protected]>