CheeHoong,
You means SAN media server, don't you?
SAN media server is restricted license of media server. SAN media server can write data ONLY came from media server itself. So we can't configure remote client on SAN media server.
Benefits of SAN media server is as below.
1. price
SAN media server is lower in price than full-featured media server.
2. off-traffic
Data streams are processed thru SAN, not IP network.
3. throughput
Throughput isnt't limited by network throughtput. So we just consider tape device performance and client host performance.