LTO-4 tape drives are compatible with LTO-4 800 GB, LTO-3 400 GB and LTO-2 200GB tape cartridges.
LTO-4 and LTO-3 tapes are fully read-write compatible. Whereas LTO-2 tapes cannot be written but can be
read in LTO-4 tape drives.
LTO tape cartridges are available as rewritable or WORM. WORM is an acronym for Write Once Read
Many and the data written to WORM LTO tape cartridges cannot be altered. This means that WORM tapes
cannot be reformatted and reused, unlike rewritable cartridges.
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