No of machines can be added as Multiple GUPs

Hi,

We are creating Multiple and explicit GUPs in our enviroment and have few questions

1. How many machines we can add as Multiple GUP in the liveupdate policy. If we add 100 machines as multiple with name and IP address.

Is there any performance problems?

2. How many subnets we can add to map a particular GUPs? Is there any limitations. 

Regards

Sharma