| From: | Jeff <threshar(at)torgo(dot)978(dot)org> |
|---|---|
| To: | Nick Burrett <nick(at)dsvr(dot)net> |
| Cc: | blue(dot)dragon(at)blueyonder(dot)co(dot)uk, shridhar_daithankar(at)persistent(dot)co(dot)in, miki(at)canaan(dot)co(dot)il, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Recomended FS |
| Date: | 2003-10-20 12:09:34 |
| Message-ID: | 20031020080934.2401ee02.threshar@torgo.978.org |
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| Lists: | pgsql-general |
On Mon, 20 Oct 2003 11:07:20 +0100
Nick Burrett <nick(at)dsvr(dot)net> wrote:
> From experience I have noticed that IDE drives that initially perform
>
> at 30Mbyte/sec dropped to around 10Mbyte/sec after a year or so.
>
Yes. This is very true - a good test I like to show of IDE falling apart
is to start up one client and show it go very fast. Then start up 20
and see what happens :)
Also - you can easily have many, many more scsi devices (and external
scsi devices) than IDE. More platters / disks == faster IO.
> >
> > IDE Hard Disk 40Gb 7200RPM = 133Mbs = 50UKP
> > SCSI Hard Disk 36Gb 10000RPM = 160Mbs = 110UKP
>
If you don't mind refurb disks that still have a warranty, check out
ebay. Friday I won a lot of 10 18GB disks for $96 + $27
insured shipping. But yeah, new scsi is quite expensive, but it can be
worth it... IMHO scsi is to be used in a raid, not alone. No one disk
can saturate the bw offered. (both ide and scsi).
--
Jeff Trout <jeff(at)jefftrout(dot)com>
http://www.jefftrout.com/
http://www.stuarthamm.net/
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