USED Toshiba enterprise-grade 12TB HDD. The model is MG07ACA12TE. I have provided the datasheet for the drive (please refer to the pictures) and CrystalDiskInfo screenshots for the SMART data.

I have used the drive in a mini server, running TrueNAS Core, under a RAIDZ1 ZFS pool that was primarily used for streaming entertainment for a little over 1 year.

The drive is sealed with helium to lower resistance of the 9 spinning platters. It is a 7200 RPM drive in a 3.5" form factor with a SATA III (6Gbps) interface. The buffer size is 256MiB with sustained transfer rates of up to 242MiB/s. The drive is rated to handle up to a 550TB/year workload while being available 24hours/day, 7days/week. The MTTF is 2.5 million hours while operating in an ambient temperature range of 5°C to 55°C. For more details, please refer to the datasheets I have provided.

These will be packaged in a specialized HDD case - dense foam padding inside a 4mm thick plastic shell. That case will then be bubble wrapped and put in another foam-and-bubble-wrap lined box.