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SKG -> RE: Exchange 2007 high memory usage (18.May2007 7:10:16 PM)
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What processor / processors you are using?
What is the motherboard, and what hard disk structure do you have.
I might be able to make a few suggestions!
I am guessing that you probably need to re-address the balance of your system designs.
Often you can improve performance by changing other things. Adding RAM tends to be expensive - and Exchange servers gobble most of it up. Basically no matter what you put in, it will use, so don’t go nuts with the RAM.
Before I even know what processor you have, I can tell you that performance will probably improve by upgrading to a CPU with higher cache in particular, speed generally - and obviously if you can add a second CPU! Almost goes without saying, but sounds like you need to be reminded - before you break the bank on RAM. Bear in mind that CPU prices fall and RAM does too, so no need to buy just yet – especially more RAM for 120 users. Wait until that quadruples!
For desktops RAM tends to be more important as they don’t have much, but for servers, its the CPU, as they are designed to use more RAM for SERVING. After about 8GB quite often you need to really think where your putting your money.
You might also want to move your accounts to a really fast raid array, or perhaps add another system (for the same price or less than the cost of all that RAM)!
Network location of the servers is also important to get the most out of them. They need to be relatively well juxtaposed to the clients. Quite often you can simply add another network card, make sure the server is set up to use both, and that takes care of the bottle neck you would never have thought about. Also look at your switches! Make sure you don’t have not so fast, “fast Ethernet switches”. If you do, replace them with gigabit or better.
The actual network card(S) themselves are also important. One with plenty of ability, tends to reduce the stress on the CPU, the RAM, the hard drives and the network!
Just remember throwing money at a problem wont make it go away. Design a solution.
Good luck.
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