How much space is needed for Exchange Unified Messaging Server 2010

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?
David XFSystems AdministratorAsked:
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rjpilcherConnect With a Mentor Commented:
The Exchange Server 2010 unified messaging disk space requirements are as follows:

•A minimum of 1.2GB of available disk space

•Plus 500MB of available disk space for each unified messaging language pack

•200MB of available disk space on the system drive

If you're using VMware why not use Thin Provisioning and go ahead and expand it?  It will only consume as much space on the SAN as there is data.

To answer your question, you should be more than fine with what you have as far as UM is concerned
David XFSystems AdministratorAuthor Commented:
We are currently using Thin Provisioning on our SAN.  However, we only have a limited amount of space left on the SAN and I'm trying not to expand the size of the VM if its not necessary.  I still have another VM planned and I'm hoping we'll have enough space available.

So the UM won't take up much space on the VM's hard drive?  It's not going to fill up our 67GB of free space?
David XFSystems AdministratorAuthor Commented:
Perfect.  We would only install two language packs, so we should have plenty of free space left over.  Thanks for the help!
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