Advertisements I just started using my old (prepaid) Series-2 as a security DVR by spoofing a satellite box on the RCA jacks. Any channel from 100 up will get the same camera signal. I set it to record around the clock in 24 1-hour blocks at High quality. That way, it should only FIFO-purge 1 hour at a time, giving me a constant history of at least 36 hours (out of the rated 37.5 hours at the High quality setting). Medium and Basic quality had too many artifacts and Best quality limited recording time to less than 24 hours. Getting to my actual question: Does the 30-minute live TV buffer use its own separate hard-drive space, or is it just grabbed from the existing hard-drive stream when a recording is in progress? I like the idea of minimal hard-drive activity vs. having the buffer writing in its own space during 24/7 recordings that grab the exact same image. I know I probably can't shut off the buffer, nor would I really want to. But I'm thinking that if a recording-in-progress "becomes" the 30-minute buffer, the total High quality recording time might be boosted to 38 hours vs. the stated 37.5 hours. Is that possible?