Increase CPUs on Exchange 2010 Mailbox Role

Good Day,

Hi , I have an Exchange 2010 SP2 Mailbox Role Server installed on Windows Server 2008 R2 .

I want to increase the number of CPUs on the Mailbox Server from 1 to 4  , will this affect anything on the Mailbox Server negatively such as failure or else ?

Note that the procedure is :

• shut down the sevrer ,
• change the CPU numbers ,
• start the machine ,
• then it will prompt for restart 

Regards

Elias Dayeh