VC wrote:
> > I had thought rotational waits were dominant over head-seek waits
> > these days.
> >
>
> No, even "these days" seek time is still the major factor:
>
> 200GB Seagate :
> Rotational Speed 7200 revolutions per minute
> Average Rotational Delay 4.16 millisecond
> Average Seek Time 8.5 millisecond
Yup, that is very much what I've seen in disk specs
as well. More so with speeds of 10krpm. In fact, I read
somewhere that disk optimizers in SANs and intelligent
controllers don't take into account rotational waits
anymore, seek speeds being a lot more relevant.
Received on Sun Jun 12 2005 - 20:12:41 CDT
