<div>
CALs are not concurrent. Nor are they &quot;maximum.&quot; You assign a user CAL to a person. And a device CAL to a device. It is a subtle distinction between that and a figurative maximum, but can matter if you have a high turnover work force, as CALs can only be transferred under certain conditions.
</div>


CALs are not concurrent. Nor are they "maximum." You assign a user CAL to a person. And a device CAL to a device. It is a subtle distinction between that and a figurative maximum, but can matter if you have a high turnover work force, as CALs can only be transferred under certain conditions.

<div>
I have people working 1 day a week some others 2 days and on top I have a high turnover. What do I do ?
</div>


I have people working 1 day a week some others 2 days and on top I have a high turnover. What do I do ?

<div>
Buy a CAL for each of them. Or consider device CALs if appropriate.
</div>


Buy a CAL for each of them. Or consider device CALs if appropriate.

<div>
<div class="content wysiwyg-content">
I have 35 users named on my AD but have only 15 to 20 logged in at any given time, Are the CALs for concurrent users or do I have to buy CALs &nbsp;for the maximum of registered users ?
</div>
</div>


I have 35 users named on my AD but have only 15 to 20 logged in at any given time, Are the CALs for concurrent users or do I have to buy CALs  for the maximum of registered users ?

Microsoft licensing of Win 2012 and Echange

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.

Hyper-V

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.