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From: justin <justin@emproshunts.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Benchmark: Dell/Perc 6, 8 disk RAID 10
Date: Thu, 13 Mar 2008 16:09:26 -0500
Message-ID: <016301c8854e$851e06e0$3101a8c0@JDell> (raw)
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Absolutely on the battery backup.

I did not load the linux drivers from dell,  it works so i figured i was not 
going to worry about it.  This server is so oversized for its load its 
unreal.  I have always gone way overboard on server specs and making sure 
its redundant.

The difference in our bonnie++ numbers is interesting,  In some cases my 
setup blows by yours and in other your's destroys mine.

On the raid setup.  I'm a windows guy so i setup like its windows machine 
keeping the OS/logs way separate from the DATA.

I chose to use ext3 on these partition


---- Message from Craig James <craig_james@emolecules.com> at 03-13-2008 
07:29:23 AM ------ 

  First, did you get the Perc 6i with battery-backed cache?  Not all 
versions have it.  I found this really confusing when trying to order -- we 
had to work pretty hard to figure out exactly what to order to be sure we 
got this feature.  (Does anyone at Dell follow these discussions?)

  Second, Dell ships a Linux driver with this hardware, and we installed it. 
I have no idea what the driver does, because I think you can run the system 
without it, but my guess is that without the Dell driver, it's using the 
Perc6 card in some "normal" mode that doesn't take advantage of its 
capabilities.

  With a 6-disk RAID 10, you should get numbers at least in the same 
ballpark as my numbers.

  Craig








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