Just in case it matters for you, the max single volume size for your NAS is 108TB

https://kb.synology.com/en-global/DSM/tutorial/Why_does_my_Synology_NAS_have_a_single_volume_size_limitation

Air gapping

/s

HGST is Always my go to as well, their drives just work and last a really long time in my experience

Mediacom is the worst, data caps and low speeds for high prices, straight highway robbery. I’m lucky to have a local ISP with no data caps and a mostly reasonable price, cheaper than Mediacom at least. And soon to be fiber when they make it over to my neighborhood. They’re currently in the process of running fiber to every neighborhood in my city.