יום רביעי 02 מאי 2012 06:33
We are looking at implementing a new exchange 2010 server into our bussiness,
However I am unsure if I have specified the right amount of RAM for our server
We have 240 User mailboxes, and we have alot of email traffic ie users receiving 100 emails in a day and sending/replying to 50, and about 50% of our email averages 150kb
- IBM System x3650 M4: 1 x Intel Xeon Processor E5-2609 4C 2.40
- 64gb RAM
- 2x 300GB SAS 10,000 RPM 6Gbps Hdds
--Attached to a SAN
- IBM System Storage DS3524 Express
- 8 x 600GB 10,000 rpm 6Gb SAS 2.5 HDD
I heard someone say that 64gb with Exchange 2010 starts to choke and use performance issues? We could double our user base in the next 3 years or we could grow by 50 - we just dont know at this stage, but we would never get more than 1000 user mailboxes
יום רביעי 02 מאי 2012 07:03
well, that's too little information to design Exchaneg 2010. However, looking at your userbase, its too small and 64GB RAM is more than enough. I will suggest you to work more on the designing part (even if the setup is small and set to grow), you should work on to get better return from your investment and RAM is just a small part of it. Please go through below planning documents to get a better understanding.
I know that's a whole lot of information and not easy to consume. So I will try to help you in following ways.
If you have already considered your Exchange design factors such as HA, DR, server placement, role distribution etc. you can see following links to get the Hardware requirements based on your user count and profile.
Having said all that, on the fly you are good to start with server configuration, you have selected. It will be a multi role server with no HA (DAG) is place.
יום רביעי 02 מאי 2012 09:02
All this mountain of information is simply doing my head in - it should not be this difficult,
My plan is to have the mail database on the SAN connected to a server which hosts all the exchange rolls (cas, hub, transport, etc),
Our current server is simply a single 2003 server with everyone on the one hard drive, so im just trying to make the mailbox store have better redundency.
Also the mailbox database log i was planning to have on the same SAN, or should i leave it on the 300gb C drive.
Also the downside of having such big ram is the massive page file...
יום רביעי 02 מאי 2012 11:36
is your store.exe consuming memory. If so it is normal for that process to grab on to certain amount.
is it consistent or only at certain times?
what is your memory percent utilization. You have to be careful if it goes above 90%. you will start getting a back pressure.
just try to run perfmon and understand what process takes your memory.
it also might be your AV software
יום רביעי 02 מאי 2012 11:44
very true, but worth reading...
Anyways, you can proceed with your plan and will be in a better situation than Exchange 2003. I will suggest to keep logs also on SAN.
Page file you can keep on local drive, custom size and set it to be 64GB + 10MB.
Just check what is your current database size, which RAID level you are planning for new setup (ideally RAID 1+0).
יום רביעי 02 מאי 2012 11:45
Did you use the Exchange Mailbox Role Calculator to size the infrastructure? This is a spreadsheet available from Microsoft that can be used to size memory, CPU, storage, etc. See http://blogs.technet.com/b/exchange/archive/2009/11/09/3408737.aspx for full details - the link to download the spreadsheet is at the end of the article (before the comments).
Feel free to post back with any other specific questions - I'm sure the community members will be only too pleased to answer further questions.
Neil Hobson | Microsoft Consulting Services UK | twitter:@NeilHobson | This posting is provided "AS IS" with no warranties, and confers no rights.
יום חמישי 03 מאי 2012 02:31מנחה דיון
Exchange Mailbox Role Calculator is a good tool for you to size your Mailbox server.
In addition, two articles for your reference.
Jack Zhou - MSFT
- סומן כתשובה על-ידי Jackzhou_5Microsoft Employee, Moderator יום שני 14 מאי 2012 03:48