On Tue, 10 Apr 2007 14:05:42 +0900, Timothy Sipples <[EMAIL PROTECTED]> wrote:
>h Even with VMware we're just not seeing >processor utilizations going up all that much in real world experience (as >evidenced perhaps by Bruno's 240 servers :-)). Who cares about cpu utilisation as far as there remain unused mips ? i am ok with 30 % load it is just that i cannot get 300 mhz machines anymore ! Real world is a world where a lot of software needed by our clients do not run on Linux , do not run on MVS , they just run on Windows ! and some run only on NT4 , this is the real world . ( today we got a new request , one ( real estate product) runs only under AIX or Sun , the other ( a web tool) runs only under W2K ,with a proprietary data base so one will get a partition on a AIX P570 , the other will get a 2k$ dual proc machine because we do not trust the software ! That is life . real life ! 241 servers and climbing ! >Another interesting case is Oracle RAC. Can you run Oracle RAC nodes in >VMs on one VMware system? Yes, but that offers little advantage for high >availability, which is the point of RAC. I do not know about this Oracle RAC , but i know about an Oracle Business Suite ERP that is running under redhat using heavily a big quad processor ( intel ) and i asked if i could put that on my IFL , the answer from Oracle was "we don't know" , the answer from big blue was , well of course , it is difficult to say , we would have to do some benchmarking , some trials etc .. because we are very good for I/os ... but if it is processor consuming it can be tricky to determine . Amen Now what do i do ? keep my 20 000 euros machine ? or take a chance on my brand new IFL ? or spend 10 days running benchmarks ( that's 20 k$ more) Well i have a production to run , i intend to keep my job and i am a coward . ( ERP systems are used only by the top floor people here ) What i am saying , is that it is not that easy to do , it is not easy to decide And i often have the impression to play guinea pig in this kind of business but on the other hand this is why we are so well paid <big grin> Bruno Bruno(dot)sugliani(at)groupemornay(dot)asso(dot)fr ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
