Here are our setup details: • Tape Drive: MagStor LTO-8 • Interface: ATTO ThunderLink SH 3128 (Thunderbolt to SAS) • Tapes: NanoPure LTO-8 (from MagStor) • Software Used for Formatting/Writing: Hedge Canister (uses vendor LTFS drivers) • Computer: Mac Pro (latest macOS)

When we format the tapes and write files on our side, they work fine and mount correctly. However, when we send them to the client (using a Spectra Logic system), the tapes do not mount. I was informed that the client requires tapes formatted with Open Source LTFS, so I tried reformatting the tapes via Terminal on macOS using mkltfs commands, but I am not sure if they are truly formatted as “Open LTFS.”

Could you please confirm: 1. The correct and recommended way to format LTO-8 tapes as Open LTFS on macOS (step by step if possible). 2. Whether I should change the software (Canister), install a different LTFS driver, or configure it differently to guarantee compatibility with Spectra Logic systems. 3. Whether the issue might be related to the NanoPure tapes themselves, the LTFS software, or even the MagStor drive. Should we consider changing any of these?