Thank you Steven, but the case is different here, that's why I created
another thread. Please forget the downlevel library manger issue.

Here is more information:

TSM server (library anager): TSM 6.2.2 on AIX 6.1
LAN-free client: Storage Agent 6.2.1 + BA Client 6.2.1 on AIX 6.1
Library: TS3310 with currently one LTO4 drive
Both TSM client and server are zoned properly on the same SAN switch.

Thank you,
Mehdi