You can get new WD drives for ~18usd/Tb. https://www.westerndigital.com/products/internal-drives/wd-red-sata-hdd?sku=WD60EFAX
I wouldn’t mess with older drives unless they were less than half the price. In that case set them up raid 1 and send it.
I doubt these cameras can sustain that kind of uninterrupted use,
I had an old HTC phone that I used as a garage security camera for 2-3 years straight. It had to be restarted every couple months, but otherwise worked fine. Now you can get a $20 IP camera that surpasses it in every way tho.
Be the change you want to see. Crowdsource a license, crack it, and set it free
Is it actually illegal? Has anyone in the US ever been charged for selling digital software they had legally acquired?