Ask the Sun guys if they will sign a document saying they will pay all cost including hardware to fix the performance problems, if after you make the change and performance is worse. It will show that you are serious and if they seriously believe they are right then they have nothing to fear,
I never understand why these vendors insist in building systems with so little hardware Cheers -- ================================================= Peter McLarty E-mail: [EMAIL PROTECTED] Technical Consultant WWW: http://www.mincom.com APAC Technical Services Phone: +61 (0)7 3303 3461 Brisbane, Australia Mobile: +61 (0)402 094 238 Facsimile: +61 (0)7 3303 3048 ================================================= A great pleasure in life is doing what people say you cannot do. - Walter Bagehot (1826-1877 British Economist) ================================================= Mincom "The People, The Experience, The Vision" ================================================= This transmission is for the intended addressee only and is confidential information. If you have received this transmission in error, please delete it and notify the sender. The contents of this e-mail are the opinion of the writer only and are not endorsed by the Mincom Group of companies unless expressly stated otherwise. Anjo Kolk <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 10-10-2002 05:43 AM Please respond to ORACLE-L To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> cc: Subject: Re: Advice needed on move to Sun 15K (losing spindles) Jay, You will hit performance problems because of not having I/O bandwidth. Databases don't need storage, they need IO operations. Two important pieces of info that are missing from your post: - How many databases in total are going to run on this Sun 15K ? - How many concurrent users on all databases at the same time ? Anjo. "Miller, Jay" wrote: > > 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 > > a) tell me I'm worrying for nothing > b) recommend a better way to stripe/distribute my files > c) provide references or experience to show this is a bad idea > > I'd really appreciate it. > > > Thanks, > Jay Miller > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Miller, Jay > INET: [EMAIL PROTECTED] > > 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: [EMAIL PROTECTED] (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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Anjo Kolk INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
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