Approx 35k power on hours. Tested with 0 errors, 0 bad sectors, 0 defects. SMART details intact.
That’s about 4 years of power on time. Considering they’re enterprise grade equipment, they should still be good for many years to come, but it is worth taking into consideration.
I’ve bought from these guys before, packaging was super professional. Card board box with special designed drive holders made of foam; each drive is also individually packed with anti-static bags and silica packs.