Video compression. Another separate modern marvel of mathematics. Not sure what security cameras you’re using, but mine all use H.264 1080p compressed streams.

Video compression. Another separate modern marvel of mathematics. Not sure what security cameras you’re using, but mine all use H.264 1080p compressed streams. I get about 15 days worth on a 2TB spinning rust across 6 cameras. Even going by your own numbers, you almost certainly are using compression too. 9.32 days on 2TB does not get you a month on 10TB if you “have a mix of 4K & HD”.