How Much Physical Ram to Leave free

Posted on 2012-09-03
Last Modified: 2013-08-02
Hi All,

Just wanted to get a feel for the amount of physical ram that should left free for the operating system.

The case in question is we have a large  Windows 2003 r2 ENT x64 server that houses 500GB of Ram. It runs a Data warehouse\BI application that stores all of it's cubes in memory. It only writes\reads from disk during start up and shutdown. It chews through the memory depending on the number of Cubes loaded.

We are having some performance issue, and I'd like to rule out memory starvation as a cause. While I'm running a perform trace, I would like some suggested guidance on how much free memory (non paged, aval MB) I should be looking for before I start making noise about memory issues.

Thanks for any advice in advance.

John L
Question by:jaLouden
    LVL 34

    Accepted Solution

    Minimum recommended 1GB for Windows Server 2003 and 2GB for Windows Server 2008
    LVL 34

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