Exchange 2010 Hardware Upgrade

Dear Experts:

we are going to upgrade the hardware being used for our exchange 2010 Servers , i have 2 server acts  MBX,HUB ( DAG members) , 2 CAS , 1 Edge ... mailboxes and hub are physical servers and they use the local hard desks to store the DB , and all other servers are virtualized , this time we gonna use SAN also for the DB !!  i need your recommendations and considerations , are there any good articles and steps useful to follow ?
regards
ExchisaAsked:
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ExchisaAuthor Commented:
Dear viveksahu:

This is for 2003 & 2007 .
i need for 2010 .
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NavdeepCommented:
Hi,

Check this design document pretty elaborate

Mailbox Server Storage Design
http://technet.microsoft.com/en-us/library/dd346703.aspx
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kevinhsiehCommented:
How big is your Exchange environment (users, database size, IOPS used)? You can virtualize the hub and mailbox servers. You can also migrate the databases to SAN storage and keep the mailbox servers otherwise intact.  
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amwinsitCommented:
I would start by collecting some base info Projected mailbox size, number of mailboxes number of messages per day per user and average message size. Let me know if you need help collecting any of that info. Once you have the info you can use the chart on the flowing page http://technet.microsoft.com/en-us/library/ee712771.aspx to calculate your requirements. If you have problems you can post your base info plus project growth % and any extra stuff you plan to run ie third party archiving or antivirus from there i can let you know RAM CPU HDD requirements.

Why are you moving the DBs to the SAN? The DAG has made the SAN use case much less atractive with 2010.
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