The implementation considerations listed in Implementation considerations for using encryption-capable TS1120 tape drives also apply to the TS1140.

As appropriate, specify EE4 (EEFMT4 recording format) for encryption or use the media interchange recording technology specification (E3 for EFMT3 or EE3 for EEFMT3 with MEDIA9 and MEDIA10) to request that the lower recording formats be used. By default, when writing from load point, EFMT4 (E4) is used by the TS1140 tape drive (MEDIA9 through MEDIA13).

Related reading:

See Migration to the software support for TS1140 tape drives for migration information and implementation information.