Exchange 2000 Memory requirements recommendations?

[gwichman]

Is there an URL someplace that shows memory recommendations for an E2k server based on number of users, size of DB's, etc?

 

[Zelandakh]

Size of DB depends on number of emails - maybe think about quotas.

RAM = 256MB for server, 512MB for Exchange and 10MB per user. Add more if you also want it to be DHCP or DNS or whatever. There is no right or wrong amount - only personal guidelines...

 

[Marcs41]

Some additional reading

http://www.microsoft.com/exchange/evaluation/sysreq/default.asp

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Free Tip: The F1 Key does NOT destroy your PC! - Marc}

 

[Zelandakh]

Pentium 166?
256MB RAM recommended?

elp.

 

[Marcs41]

Surprisingly, that works you know, be it a little slow on response at times, but it does work, even with 128MB.
I had a test server running that way, takes ages to load up but for a few users it is ok, although I absolutely do not recommend that low spec in a live environment. _{If 'something' 'somewhere' gives 'some' error, excpect random guesses or no replies at all. Please specify details.
Free Tip: The F1 Key does NOT destroy your PC! - Marc}

 

[Zelandakh]

oh, test environments will take most kit - I had an aging K6 with 128MB that did loads of stuff on test. My live Exchange with 512MB and dual Xeon was running like a dog until I dropped 2GB of RAM into it...

 

[Zelandakh]

oh, test environments will take most kit - I had an ageing K6 with 128MB that did loads of stuff on test. My live Exchange with 512MB and dual Xeon was running like a dog until I dropped 2GB of RAM into it...

 

[gwichman]

I still don't feel like i'm getting a clear microsoft recommendation on how to size your memory. Ok i've seen the page saying 256MB recommended. I've heard (perhaps wrongly) that Microsoft does recommend memory based on number of users. However i'm not able to find any page or microsoft published recommendation on how to size an Exchange 5.5 or 2000 server. Does such a thing exist? So far it seems like the answer is no ..

Speficially i'm interested in RAM but could just as easily ask the question in regards to cpu recommendations, drive space and configuration recommendations, etc..

 

[Marcs41]

Opinions on RAM will be different. What works for one is not enough for another.
I explain (try).
The general rule is in the way Zelandakh mentioned. 256 or 512 and 10 MB per user. But ... what if you have 2000 users? Obviously there is a limit, hardware by server but also in reasonabilty.
50 users can generate more mail then 1000, it all depends on what the load will be.
Bottom line, add as much as you can with a minimum of 512 for 2000 and 256 for 5.5

You don't mention anything on what you load will be, users, estimated number of emails, lots of attachments, how you will connect, mail clients ... _{If 'something' 'somewhere' gives 'some' error, excpect random guesses or no replies at all. Please specify details.
Free Tip: The F1 Key does NOT destroy your PC! - Marc}