ARPA entries for a host with multiple IPs

Question on BIND 9 running on FreeBSD. My customer requested to add multiple IPs to a single name so that he can use the round-robin feature of BIND to load-balance the service. The entry we added looks something as below: # more db.myzone .. .. ws .. .. So when my customer query the ws, he

How many nameservers?

How may NS entries typically is allowed per zone? Is there a bind limit or does it cause any side effects if the slaves are geographically distributed ? We would like to setup one zone for my new group who have offices all over the world ? We are planning to use BIND 9 over FreeBSD. There may be f