Why the concern for the higher temp? It's in spec, is it not? Those drives will last 10+ years. If they fail, it won't be due to the temps. They are built like tanks. Always back up your data and sleep good at night. I had an HGST enterprise drive start to show problems in 2021 when I was building a new main rig. It still hadn't failed. I had three of those drives in my previous main rig. When I researched how long I had been using them, I figured out that they were over 10 years old running 24/7. That's good enough for me and bought three new replacement drives. And all my drives in my server are HGST/WD enterprise drives (8TB-10TB He). All EIGHT of them. Running 24/7 since 2021. All my data is backed up.