When replacing an existing LTO-6 tape library with a new HPE StoreEver MSL2024 tape library, and the customer wants to reuse their LTO-6 tape cartridges, LTO7 (Option D) is the latest tape drive technology that provides backward compatibility with LTO-6 tapes.

LTO7 drives can read and write to LTO-6 cartridges, making them the optimal choice for ensuring the customer's existing media can be utilized effectively while also providing the benefits of newer tape technology, such as higher capacity and faster data transfer rates.

References:

HPE StoreEver Tape Solutions

HPE LTO Tape Technology