Looks very fine Ra'fat, In VirManSec we appreciate your effrots.
I want to highlight the following:
_In case we want to install CAS, HUB & Mailbox server on one box, what's the level of utilization do we have to expect? from processing point of view.
_In Your article in noticed that you mentioned the Enterprise edition of Exchange, what are the other editions? Can you refer us to a TechNet article where all editions are listed.
Thank you Ra'fat for sharing.
Cheers,
Hi Asem
For the First question, there are several factors to calculate the Processing of Memory & CPU. Some of those factors are the number of mailboxes and size of mailbox.
Also; the processor usage on a server should be about 60% during working hours. If the processor usage is consistently greater than 75 percent, processor performance is considered as a bottleneck.
Also I want to add point to your question, RAM utilization is very important and it has to be considering when you start designing Exchange. The information available for Exchange 2010 is few at this time, but we can use the recommendation for Exchange 2007 now, please find two links for processor and RAM planning:
Planning Processor Configurations
technet.microsoft.com/.../aa998874.aspx
Planning Memory Configurations
technet.microsoft.com/.../bb738124.aspx
For the Second question, Exchange 2010 released with two editions (Standard & Enterprise). Please find a TechNet article talk about Exchange 2010 Editions & licenses:
technet.microsoft.com/.../bb232170(EXCHG.140).aspx
Regards,
Ra’fat
Very interesting , Thanks Rafat for the really valuable information
I Just want to add that one the most significant architectural changes in Exchange Server 2010 is that the Client Access server (CAS) now supports all client connections, including MAPI client connections from Outlook clients.
In Exchange 2007, Outlook configured as MAPI client, has always connected to the mailbox server directly rather than connecting to a Client Access server (CAS).
Hi guys,
I have found something on Technet related to Exchange 2010 hardware planning :
Memory configurations : technet.microsoft.com/.../dd346700(EXCHG.140).aspx
Processor configurations: technet.microsoft.com/.../dd346699(EXCHG.140).aspx
As mentioned in Technet , Exchange 2010 Storage sizing part will be available soon.
So in case of having MB, CAS and HUB installed on the same physical machine , the recommended memory is calculated based on the following : 8GB plus 2-4MB per mailbox .
When performing processor sizing ,consider 800 mailboxes per core. Microsoft recommend 8 processor cores.
Thanks for the useful information Samer!
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