IBM LTFS Single Drive Edition (SDE) free download

Single Drive Edition of LTFS (Linear Tape File System) is for free and available to download from the IBM Support website: http://www.ibm.com/support/fixcentral
Select:
Storage Systems > Tape Systems > Tape Device Drivers and Software > Linear Tape File System (LTFS)

Downloads are available for Linux, MAC OS and Windows
For supported tape systems and supported Operating Systems see the detailed specifications and overview:
http://www-03.ibm.com/systems/storage/tape/ltfs/specifications.html

IBM Tiered storage for big data: GPFS & LTFS

Interesting article about BigData and integration of GPFS and LTFS
http://www.zurich.ibm.com/sto/systems/bigdata.html