Supposedly there is a chip in the LTO tapes that TSM doesn't support either.

>From my fox hole, LTO works great, but in some ways it is 'to big'.  The
spin time on the tapes is measured as about 3 minutes to rewind and unmount
a tape.  Meaning if you have to scan down a tape to restore a file it can be
a while.    Very fast tapes tend to be small, so it is a real tradeoff.

Speed of restore is starting to be a factor here and I have seen several
posts where that is becoming more of an issue at many sites.  But the
architecture of TSM that makes it great, also gets in the way of high speed
restores, unless you have lots of slots in a large library for a relatively
small number of clients (co-location and/or backup sets - for theses many
smaller tapes might be better, but I digress).

I havn't seen the specs on all the tape drives but for bulk backups, fast
and big is best.  For restores, smaller and fast is better IMHO.  In general
use, I still like fast and big, but DR is still my nemisis because of it.

... Jack