Have you seen any new interesting products utilizing LTFS for backup or archive?
I have not seen a lot of products that utilize Linear Tape File System (LTFS) for backup or archive yet. I think that the reason for this boils down to simple economics. The storage industry is heavily invested in disk-based storage and seems to be pushing the idea that tape is dead. LTFS tends to have a lower price per gigabyte than disk-based storage, so it is more profitable for the storage industry to sell disk-based storage technologies than tape-based storage.
To date, most of the development of LTFS products has been aimed at the media and entertainment industry. Recently, however, we've seen a few new products emerging in the enterprise storage and backup space.
For example, Oracle added LTFS software that works across the entire StorageTek tape libraries and Quantum added support for LTFS tape to its vmPRO virtual machine backup software.