At least it didn't lock up and corrupt the OS irrecoverably under high temperatures / high write load like some 2.5"-SMR drive did for me.
The Toshiba L200 2 TB drive works fine when inside the tray-less mobile rack of my PC. With proper cooling temperatures range from 29-43 °C depending on load. SMART states the drive can work up to 60°C, which seems not so true in practice. I think, it will work fine inside an aluminum enclosure.
Somehow HGST knows some military-grade magic, the other manufacturers don't have. Their drives generate less heat, even at 7200 rpm, they work reliable at extreme temperatures*) and they have an astonishing low failure rate. They're just stopping at 1 TB for the 2.5" 9.5mm form factor (The Travelstar 5K1500 isn't sold anymore), which is 1 TB less of what I need.
*) HGST once sold me an 3.5" 2TB DeskStar 7K2000 7200rpm 5-platter drive times inside an USB enclosure. Drive was cooking with up to 65-70°C when loaded, idling at 50-55°C. I was worried first, but ten years later that noisy brick still works just fine.