I read this excellent technet article :http://technet.microsoft.com/en-us/library/ee332331.aspx (Understanding Unified Messaging Performance and Scalability)
You use the Exchange 2010 Mailbox Server Role Requirements Calculator when you want to size the Mailbox role.
Do you need to play E2010 MBX SRV ROLE Requ Calculator another time since we know that a voice msg is a msg with attachment if I understand ?
IS there a excel sheet or a PS program you could advice to help in case of, you want to add new servers with UM role in an existent exchange 2010 infrastructure. This role will not be added to existent servers E2010. UM role will be configured on new E2010 servers.
How to determine resource requirements that CAS will need because If I understand, in the case where you configure UM role on separate 2010 Exchange server, these servers will talk with existent CAS servers through EWS (about 10 000 users :2 DAG, 2 CASARRAY, HLB) ? So they will add a stress to CAS resource ?
Does anybody have some experience to share about these topics ? Thank for your help, guys !
PATMOY
BOAT