Re: [Thinkpad] 80Gig 7200RPM for T30?

The huge cache on the new disks is a great win, *if* the file
you are working on is contiguous such that the controller scoops
up other parts of it before the OS asks for it. In that case, I could
see a 5400rpm large cache drive beating the smaller cache 7200
disks.

But when you are using a complicated file system with things
all over the place, nothing beats the gain from the faster rotational
time of the 7200 rpm disks. When compiling OpenBSD I noticed
a several minute drop, just from switching from 5400 to 7200.

I think it depends on just what you're doing. The cache does
help out, but rotating the disk faster is still the best thing. What
I'm waiting for are the 100G disks at 7200 rpm. I've now heard
my first whispers that some form of 100G disk exists...

--STeve Andre'

On Sunday 27 July 2003 04:49 pm, Bill - ThinkPads dot Com wrote:
> the 7200RPM, 60gig travelstar is faster..
> how much faster is a bit of a mystery, to me, at this
> moment..
>
> i ran the norton benchmark on a 40gig 5400RPM drive and a
> 60gig 7200RPM drive..
> initial results were the 7200RPM drive was faster..
>
> since i ran this test on these two drives i cloned on to the
> other and tested them in my A31p using an 80gig drive as the
> boot device (WXP) and the other drives one each in the
> UB2000 (7200 drive) and the other (5400 drive) in the
> UB2000+..
> initially, the 7200 drive tested faster..
> so, just to be sure, i swapped the drives with the 7200
> drive in the UB2000+ and the 5400 drive in the UB2000..
> SURPRISE, the 5400 drive now tested nearly as fast..!?
>
> whats happening here..??
> i don't yet know..!
>
> next i'll install the norton 2003 suite on both the 5400 and
> 7200 drives and test each in the used T40p i have..
> sometime tonight..
> after that, i'll do the same thing in my A31p..
>
> and really get a better handle on haw fast these things
> really are..
>
> but remember, there is more to HDD speed than merely cache
> and RPM..
> like how the files are sorted and the file system in use..
> beyond the mere mechanical and interface questions..
> so YMMV and subjectivity will play a part..
>
> but i'll bet loading photoshop will go faster.. :-)
> and thats one thing i'll try when i do this on the A31p..
>
>
> *******************
> Cordially,
> Bill Morrow
> (from NetFinity Server)
> web page: http://www.thinkpads.com
> bill@thinkpads.com
> ----- Original Message -----
> From: "Mike Ryan" <mike94109@yahoo.com>
> To: "ThinkPad Mail List" <thinkpad@stderr.org>
> Sent: Friday, July 25, 2003 2:11 PM
> Subject: [Thinkpad] 80Gig 7200RPM for T30?
>
> > I haven't been keeping up on this list lately. I'm
> > using an 80Gig 4200RPM on my T30 and wondering if a
> > faster RPM 80Gig is now available. 5400 would be okay
> > but 7200 would be super?
> >
> > Any news/information/cost would be appreciated.
> >
> > Mike...
> >
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Received on Sun Jul 27 17:21:03 2003