On Thursday 25 September 2003 09:05, Brian T. Brunner wrote: > SATA vs ATA150 vs ATA133 vs ATA100 vs ATA66.... phooey! > > The real limiter is the data transfer rate at the disk head. > > Generally Speaking (IIRC), 7200 RPM drives move data to and from the > platters at around ATA33 speed. > > So ATA66 is about as fast as your hardware will exploit with two > drives on the cable. ATA100 reduces bus contention for "both rives > ready simultaneously" about as low as it will go; ergo ATA5000 is not > faster than ATA100 in measurable effect. > > Buy more RAM... that'll speed you up more than going ATA5000 instead > of ATA100. Sounds good on paper, but when you get better performance out of an ATA133 drive than an ATA100 drive, same chassis, came controller, same drive MANUFACTURER, same RPM, same cache, just a different ATA speed, then it goes to show you, whats on paper doesn't always match whats in the field. Being able to pull data from the on-disk cache and get it through the ATA bus faster _does_ make a difference in real world performance. -- Jesse Keating RHCE MCSE http://geek.j2solutions.net Mondo DevTeam (http://www.microwerks.net/~hugo/) Was I helpful? Let others know: http://svcs.affero.net/rm.php?r=jkeating -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list
