HP3000-L Archives

March 2005, Week 2

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Subject:
Re: NIKE Mod 20 Woes...
From:
Gilles Schipper <[log in to unmask]>
Reply To:
Gilles Schipper <[log in to unmask]>
Date:
Mon, 14 Mar 2005 14:55:34 -0500
Content-Type:
text/plain
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I can't see how going from three 9gb external drives to a mod20 with 8 luns
would result in a noticeable performance degradation - all other things
having remained the same.

Did the FWSCSI connectivity remain the same?

Were the original external drives connected to a single FWSSCI card or
single SE-SCSI card or ???

In general, unless you have a very specific I/O intensive application, it
would be difficult for your 918 to bottleneck on your disk i/o without
first exhausting your CPU resources - even if only attached to a single
SCSI card.

Something appears to be amiss here.

However, as others have pointed out, it would be best to forgo your 100mb
lan card in order to enable your mod20 to utilize two FWSCSI cards.

At least it wouldn't hurt.




At 10:24 AM 2005-03-14, Doherty, Thomas (Retirement) wrote:
>I'm currently running a 918RX, 512Mb Memory.  We recently went from (3) 9G
>external drives (LDEV one running at 4 G of course) to a Nike Array.
>
>Unfortunately, due to a 100mb NIC card taking up one half of a slot, we
>couldn't't run a second FW SCSI card so we're running 8 LDEVS on the single
>FW SCSI card, and the performance has taken a hit.
>
>It's my understanding that the limit on a FW SCSI card is 4 drives, so I
>guess I could reconfigure the Nike for 4 LDEVS, converting the rest to 'hot
>spares.'  For a temporary fix.
>
>Looks like we need a larger server.  Any recommendations?
>
>* To join/leave the list, search archives, change list settings, *
>* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *

-------------------------------------------------------------------------------------------------
Gilles Schipper
GSA Inc.
HP System Administration Specialists
300 John Street, Box 87651   Thornhill, ON Canada L3T 7R4
Voice: 905.889.3000     Fax: 905.889.3001
email:  [log in to unmask]  web: http://www.gsainc.com
-------------------------------------------------------------------------------------------------

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