From: jeff barratt-mccartney (jbarratt@COMPSAT.COM)
Date: Wed May 12 2004 - 23:02:34 EDT
dunno. maybe.
john, get with the program. upgrade.
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
John Jolet
Sent: Wednesday, May 12, 2004 10:44 PM
To: aix-l@Princeton.EDU
Subject: Re: Fastt600 Performance
don't you need 5.2 for the load balancing to work? he's on 4.3.3
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
jeff barratt-mccartney
Sent: Wednesday, May 12, 2004 7:08 PM
To: aix-l@Princeton.EDU
Subject: Re: Fastt600 Performance
did you try chdev -l dar0 -a loadbalancing=yes
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
Yard, John
Sent: Wednesday, May 12, 2004 4:30 PM
To: aix-l@Princeton.EDU
Subject: Fastt600 Performance
--------------------------------------------------------------------------
I have a new fastt600 direct attached to 2 h80’s
( aix 4.3.3.). The fast Best Practices Guide
talks about balancing LUNs across controllers,
but when I did this with a raid device, creating
a logical volume across 2 raid devices, tests
showed the system reading not from both raid devices
at the same time, but in round robin fashion.
Thruput was not terrible, but was not exceptional
either.
Anyone have any experience or suggestions
tuning the fastt600, or other fast devices ?
Thanks,
John Yard
UCLA
John Yard
UCLA Administrative Information Systems
Distributed Platforms
Unix/Win2000 Admin/Sybase/Oracle/SqlSrvr/Networking
310-825-1725
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