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Re: I/O Performance/bottlenecks on EMC Symmetrix

From: Gene Sais <Gsais_at_co.palm-beach.fl.us>
Date: Thu, 13 Sep 2001 06:16:48 -0700
Message-ID: <F001.0038CFF2.20010913055524@fatcity.com>

!! Please do not post Off Topic to this List !!EMC supplies very good tools and support. Ask your EMC rep to show you how to use them.

>>> nlzanen1_at_EY.NL 09/13/01 07:55AM >>>

!! Please do not post Off Topic to this List !!

Hi All,

Does anybody here on the list have experience with EMC/symmetrix storage units.?

We have our databases on this machine and I have a feeling the the I/O performance is not very good. I can not proof it since I do not have any experience/data/access to that machine. We do however have a very cooperative UNIX group but they also lack experience with performance on this machine.

Who can give me pointers about I/O throughput that can be reached, configuration pittfalls etc..

Example:
RS6000 8CPU's and 4Gb memory with storage on EMC/symmetrix. Job takes about 2 hours to complete.

F50 1 CPU 1Gb memory (TEST machine) local disks. same job takes 0.5 hours to complete.

Jack



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Author: Gene Sais
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Received on Thu Sep 13 2001 - 08:16:48 CDT

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