Buying hard drives

[Rasjid]

Well, here are the stats from the drive I bought from Cougar today for
$307.  I went with the IBM in the end, so the drive is an IBM 40GB 60GXP
7200RPM ATA 100 2MB IDE on an Athlon 900, 196MB Ram.

[root at yoda /root]# for ((n = 1 ; n<=5 ; n++)) ; do hdparm -tT /dev/hdf1
; done

last result was:

/dev/hdf1:
 Timing buffer-cache reads:   128 MB in  0.70 seconds =182.86 MB/sec
 Timing buffered disk reads:  64 MB in  1.65 seconds = 38.79 MB/sec

Since adding the second drive, I've noticed that the buffer-cache reads
of /dev/hde1 has dropped from an average of 193.94 MB/sec to 172.97
MB/sec, which I presume is due to the drive controller having two drives
to manage?  So I assume that if my new drive was the only drive on the
channel the buffer-cache speed would be slightly higher.

Rasjid.


Saul Thurrowgood wrote:
> 
> Recently purchased Athlon 1333, 128M DDR.
> 
> 30GB Western Digital 7200RPM ATA100 (BB):
> 
> root at boom:~# hdparm -Tt /dev/hda
> 
> /dev/hda:
>  Timing buffer-cache reads:   128 MB in  0.58 seconds =220.69 MB/sec
>  Timing buffered disk reads:  64 MB in  1.99 seconds = 32.16 MB/sec
> 
> Simon Haddon wrote:
> > The specs are  WDC WD200BB-00AUA1, ATA DISK drive
> >
> > [root at calippo /root]# hdparm -Tt /dev/hdc
> >
> > /dev/hdc:
> >  Timing buffer-cache reads:   128 MB in  2.64 seconds = 48.48 MB/sec
> >  Timing buffered disk reads:  64 MB in  6.01 seconds = 10.65 MB/sec
> >
> 
> Damien Elmes wrote:
> > well, on that note, i'd be interested in people posting a benchmark of
> > their drives. this is my ata100/7200RPM baracuda III, after a few runs
> > the numbers start to settle down:
> >
> > reflex$ sudo hdparm -Tt /dev/hda
> >
> > /dev/hda:
> >  Timing buffer-cache reads:   128 MB in  0.78 seconds =164.10 MB/sec
> >  Timing buffered disk reads:  64 MB in  1.85 seconds = 34.59 MB/sec
> >
> > i've got a 5400RPM, ATA100 40 gig IBM drive in another box, and its
> > scores are quite similar:
> >
> > respite$ sudo hdparm -Tt /dev/hda
> >
> > /dev/hda:
> >  Timing buffer-cache reads:   128 MB in  0.91 seconds =140.66 MB/sec
> >  Timing buffered disk reads:  64 MB in  2.29 seconds = 27.95 MB/sec
> >
> > (note that it's running at ATA66).