How to initialize a large block of data from server to client at connect?

I'm trying to find the most efficient way to initialize a large (60K to 120K bytes) block of data at client connect time. Once the client has had this array initialized it will be simple to keep the arrays synced via packUpdate/unpack update. It's just that I don't think packUpdate/unpackUpdate will be optimal for a large batch of data, nor do I even know the best way to do that under pack/unpack scenario.

Any help would be greatly appreciated.

= Ed =