From: Jeff Barratt (jbarratt@COMPSAT.COM)
Date: Fri Jan 17 2003 - 12:21:14 EST
appendix A of the IBM ESS and IBM DB2 working together Redbook has a
performance study on large vs small LUN sizes. It also covers vertical vs
horizontal placement considerations
here's the link
http://publib-b.boulder.ibm.com/Redbooks.nsf/9445fa5b416f6e32852569ae006bb65
f/2be862ac9ff3b4d685256a0f005e601b?OpenDocument&Highlight=0,ess
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
Bill Verzal
Sent: Friday, January 17, 2003 11:15 AM
To: aix-l@Princeton.EDU
Subject: ESS and LVM considerations
Hi *,
I am going into a meeting with our SAN team in about 45 minutes. I've been
pouring over Redbooks all morning to try to find information on something.
Hopefully the synergy out there will help.
Is there any best practice of documentation out there that says anything
like:
When carving a LUN in the ESS, using fewer BIGGER LUNs is more
efficient than more SMALLER LUNs.
I can see where AIX would have more overhead, but is it worth it ?
Thanks, Bill.
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