hello guys, When we sizing Mailboc calculation we have default 4 Mailbox Profiles, Such as Tire1 Tire2. I have 8 Mailbox profiles to size, What can i do ? regards

Pick the four most demanding ones and put all users in them. If they pass, all is good. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hello, Generally, the maximum database size should always be calculated as follows: Number of mailboxes × Maximum mailbox size x Data overhead factor = Database size (Recommended 50GB) For more information, we can refer to the following links: White Paper: Planning for Large Mailboxes with Exchange 2007 http://technet.microsoft.com/en-us/library/cc671168(EXCHG.80).aspx#MBXMgnt Planning Storage Configurations http://technet.microsoft.com/en-us/library/bb124518(EXCHG.80).aspx Planning for Mailbox Servers http://technet.microsoft.com/en-us/library/bb201699(EXCHG.80).aspx Thanks, Simon