>There are three servers, not co-located.
>
>There are several large databases to be kept in sync on all servers.
>
>There are periodic needs to replace all of the data in any given database, about 30 GB.
>
>What would be the most efficient method to update the other servers, replicaiton, log shipping, or soem other??

Rollin,

We need a little more information before recommending one solution over another:

1. Will all three servers have CRUD transactions that need to be integrated with the other two?
2. What is the minimum acceptable lag time between the databases being syncronized?
3. Do you already have scheduled nightly maintenance processes and the infrastructure to support them?
4. When you say that the servers are not co-located, do you mean that they are all local and on the same network or that they are spread out geographically and on separate (slower) networks?
5. Do you need to encrypt the data as it travels across external networks?
6. What is the normal load on the servers - is there enough power in reserve to support replication?

A quick bit of advice that I can give is that if you want to completely replace a database periodically, then log shipping by itself is not enough. You would have to send a database backup to the 'new' server to re-initialize it.