RE: Journaling

[Jim Knight <jknight@xxxxxxx>]

The only performance hit I know of is the 10 disk requirement
for journal receivers.  The 400 will use the 10 fastest drives in 
ASP.  I believe the journals get preferential treatment for placement
on the drives.  Since they are a sequential function, if there is a lot
of production data updating to those drives, you could see disk utilization
go up.  Placing them in a separate ASP reduces that performance hit.
jk

-----Original Message-----
From: John Earl [mailto:johnearl@400security.com]
Sent: Friday, September 15, 2000 6:34 AM
To: MIDRANGE-L@midrange.com
Subject: Journaling


Does anyone know of a benchmark for journaling on the AS/400?

I'm involved in a discussion with someone who refuses to believe
that journaling will not bring a system to it's knees.   I could
create a test, but it would be better if this information came
from some independent third party.

Anybody have a reference from a reputable source?

jte




--
John Earl                    johnearl@400security.com
The PowerTech Group      --> new number --> 253-872-7788
PowerLock Network Security   www.400security.com
--


+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---
+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---