For AD integration with Umbrella Virtual Appliances, the Umbrella Active Directory Connector needs to be sized depending on the number of Virtual Appliances and Domain Controllers it is communicating with.
General sizing guidelines are as below for deployments with Virtual Appliances:
|Number of VAs + Number of Domain Controllers||Minimum specs required for connector|
|0 - 10||1 CPU, 512 MB RAM|
|10 - 20||2 CPU, 1 GB RAM|
In the table above, each Domain Controller is assumed to process a maximum of 800 AD events/second. If any of your Domain Controllers are processing more events, make sure to increment the number of Domain Controllers accordingly to derive the Connector specs. For example, if you have a Domain Controller that processes around 1000 AD events/second at peak load, count that as 2 Domain Controllers for the sizing table above.
If a connector is run on a system with lower CPU and memory specifications, the connector will continue to function but some optimizations such as parallel synchronization of login events to Umbrella Virtual Appliances will not be turned on.