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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Advice needed on move to Sun 15K (losing spindles)
I bet you Sun rep , while trying to unload some hardware on you, has never heard of the term "Logical I/O". Many times when "upgrading", one can make things worse , not better. If you are having performance problems, then zero in on what those could be and fix it there. Take some snapshots, 10046 data traces and or look at the session / system events for where you waits may be. Then fix them ... then tell your management you saved them 100's of 1000's of $$$$. Then they will give you a great big raise !!!! yah right !!!
fwiw ... Mike
-----Original Message-----
Sent: Wednesday, October 09, 2002 11:54 AM
To: Multiple recipients of list ORACLE-L
Our CIO has suggested that we get a Sun 15K to house all of our databases. This has some advantages (communication between the various boxes would be much faster) but I have some performance concerns.
Specifically, our main OLTP database would go down from 18 spindles to 8 spindles. Mirroring will take away 4 of those leaving 4 spindles. The vendor (Sun) was recommending striping across all 4 spindles. He said we don't need to worry about i/o issues because there will be a large cache.
I'm skeptical and argued for cutting them in half (striping 2 and 2). We could then at least seperate the redo logs from the datafiles (probably putting them with the oracle executables and some other files).
The Sun rep kept talking up how much more powerful the CPUs were and I kept saying, "but we're not CPU bound, we don't need any more CPU".
If anyone can either
I'd really appreciate it.
Thanks,
Jay Miller
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Miller, Jay
INET: JayMiller_at_TDWaterhouse.com
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Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services ---------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Wed Oct 09 2002 - 19:38:44 CDT
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