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Re: Reliability recommendations

From: Vivek Khera <vivek(at)khera(dot)org>
To: Postgresql Performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Reliability recommendations
Date: 2006-02-24 16:27:37
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
On Feb 24, 2006, at 9:29 AM, Bruce Momjian wrote:

> Dell often says part X is included, but part X is not the exact  
> same as
> part X sold by the original manufacturer.  To hit a specific price
> point, Dell is willing to strip thing out of commodity hardware, and
> often does so even when performance suffers.  For many people, this is
> unacceptable.

The last dell box I bought, a PE1850, came with a PERC 4e/Si card,  
which I believe is the same as the card the OP was looking at.  It is  
very fast in RAID1 with two U320 disks.

For real DB work, I'd look more to a dual channel card and have 1/2  
of each mirror pair on opposing channels.  Dell can configure that  
for you, I'm sure.

I think the well tossed-around notion of Dells being underperforming  
needs to be re-evaluated with the EM64T Xeon based systems.  They are  
quite fast.  I haven't put a very large db with extreme loads on any  
of these systems, but the simple benchmarking I did on them shows  
them to be acceptable performers.  The high-end RAID cards they sell  
these days do not seem to me to be skimpy.

Now if they'd only get on the Opteron bandwagon....

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