Giuseppe,
Look at:
-Drive mapping. Your client might think it needs to write to another drive
then to what the TSM server have mounted the tape.
then to what the TSM server have mounted the tape.
-There is a new redpiece/redbook about LTO and SAN that you should look at
(SG24-6268-00). In that book there are also some info regarding persistent
(SG24-6268-00). In that book there are also some info regarding persistent
mapping that might be an area that you should look at.
-Make sure that you have the latest device drivers for the tape drives, it
also sounds that you need to upgrade to a later version of TSM 4.2.X too as
also sounds that you need to upgrade to a later version of TSM 4.2.X too as
I recall that the version you are running can create data corruption with
lanfree.

Regards,
Jan Norback