Hi

Depending on the version of TSM you are running, you dont have to buy the 
shared library license:

1. Tivoli Storage Manager required library sharing, and managed library 
license, if the license has more than 3 drives, or more than 30 slots.

2. Tivoli Storage Manager Extended Edition doesnt require either shared 
library or managed library licenses, as they are included within the TSM 
Extended license.

Of couse, the situation differs between running multiple TSM servers 
against a 3494, and running LAN-free agents against the 3494, as the 
LAN-free agents utilize both server-to-server communication, and library 
sharing. In that case, you will require 

Best Regards

Daniel Sparrman

PS! The definition of a 
-----------------------------------
Daniel Sparrman
Exist i Stockholm AB
Propellervägen 6B
183 62 HÄGERNÄS
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51