Horton

Re: Recomended FS

Jeff Trout <threshar@torgo.978.org>

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From: Jeff <threshar@torgo.978.org>
To: Nick Burrett <nick@dsvr.net>
Cc: blue.dragon@blueyonder.co.uk, shridhar_daithankar@persistent.co.in, miki@canaan.co.il, pgsql-general@postgresql.org
Date: 2003-10-20T12:09:34Z
Lists: pgsql-general 
On Mon, 20 Oct 2003 11:07:20 +0100
Nick Burrett <nick@dsvr.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@jefftrout.com>
http://www.jefftrout.com/
http://www.stuarthamm.net/