Saving 70K ea. 10 minutes 24/7 for a year is less than 4 GB, and will fit on a single DVD. That's assuming night time use.

Due to the nature of jpg, night time files should be tiny.

If it wasn't for the focus issue, it could run 24/7.

Verum audaces non gerunt indusia alba. - Ipsi dixit MCMLXXII