Two Kafka Question

Hello,

First, is there a limit to how many Kafka brokers you can have?

Second, if a Kafka broker node fails and I start a new broker on a new node, is it correct to assume that the cluster will copy data to that node to satisfy the replication factor specified for a given topic? In other words, let's assume that I have a 3 node cluster and a topic with a replication factor of 3. If one node fails and I start up a new node, will the new node have existing messages replicated to it?

Thanks.

Casey