Choosing the Right RDS CALs License for Windows Server 2008 R2

Windows Server operating system licenses are restricted to the purchaser’s physical server and don't extend connectivity rights to users or devices.

Separate licenses are necessary to permit user or device access to server services.

A User-CAL enables server access tied to the individual, not the device, allowing connections from any number of endpoints. Conversely, a Device-CAL permits server access via a specific device, covering all users of that device without needing individual User-CALs.

Best Fit for Your Business

Choosing between User-CALs and Device-CALs depends on your number of employees versus devices and whether access is needed remotely or from a single location.

For instance:

• Opt for User-CAL if your employees outnumber devices, or need flexibility to connect from various locations.
• Select Device-CAL if devices are fewer than users, or for environments where multiple individuals use the same device at different times.

User RDS CALs License

User RDS CALs are not automatically enforced but require manual verification to ensure compliance with Remote Desktop Services licensing. This model typically suits businesses where employees use multiple devices to access the server.

Consider a user accessing their email across multiple devices in a week—a single User RDS CALs license would cover all such uses.

Device RDS CALs License

The device model issues a temporary license upon a device’s first connection to a Remote Desktop Session Host. On subsequent connections, a permanent Device RDS CAL is granted, provided the license server is active and CALs are available.

This model is ideal for scenarios with many users but limited devices, like a kiosk used by different employees or shifts sharing PCs round the clock.