SideFX no longer supports the old redundant server setup. There is no redundant server setup capability.

The easiest method would be to use a hypervisor to create a clone of your physical or virtual license server machine. In the event of failure of the primary machine, you will be able to spin up the cloned image and continue to serve network clients.

It is very important that the clone has the same machine name and MAC address (network device hardware address) as the primary machine. This will allow you to serve network clients using your existing keystrings.

With your hypervisor, you should be able to edit the clone machine details to manually enter the MAC address.

To create a clone:

VirtualBox

1. Right click on the virtual machine
2. Select Clone
3. For MAC Address Policy select: Include all network adapter MAC addresses
4. For Additional Options select Keep Disk Names and Keep Hardware UUIDs
5. Edit the Name and the path or keep the defaults
6. Click Continue
7. Select Full clone and hit the Clone button to begin the cloning of the primary machine.
8. Take the cloned image and place onto a different host machine and bring up in the event of primary failure.

VMWare

1. Right click on the virtual machine to select Clone
2. Select Clone to Virtual Machine
3. Enter the name of the clone and click Next
4. Enter the host resource of the clone and click Next
5. Select virtual disk format: same as source
6. Select the datastore for the clone. Note that it should be different than the primary machine's. Click Next.
7. Check the box to Customize the machine's hardware
8. For the primary network adapter, set the MAC Address to manual and enter the same hardware address as the primary machine. Click Next.
9. Click Finish to start the cloning process.

Cloning machines will still require some manual intervention. If the primary machines is unavailable, you will still need to manually bring up the secondary.

If you need a more automated setup you may want to investigate VMWare's Fault Tolerance (FT).

VMWare Fault Tolerance (FT)

"You can use vSphere Fault Tolerance for your virtual machines to ensure continuity with higher levels of availability and data protection. Fault Tolerance is built on the ESXi host platform, and it provides availability by having identical virtual machines run on separate hosts."

Unfortunately we do not support a redundant server setup.

VMWare Fault Tolerance Documentation