We have a virtual server (VMware) that is currently running the Exchange Server 2010 components Client Access and Hub Transport. We want to install an additional component onto this VM - Unified Messaging Server. When we are finished, this VM will be running Exchange Server 2010 components Client Access, Hub Transport, and Unified Messaging. We have a separate VM that runs the Mailbox role.
How much space will the Unified Messaging component require? I've searched on the Microsoft Support website and Technet website and I haven't been able to find an exact answer. The VM is currently using 53GB of 120GB. This leaves us 67GB of free space. Is this enough? Will we need to expand the size of the VM on our SAN to suport the Unified Messaging Server?