DAVE IN KENT

Evening all does anyone know how to work out how large a hard drive is required for a certain amount of days. Ie 3 cams for 31 days recording

just finished a big install yesterday i was working in the first and was happily waiting for a 8 core to be poked up when i herd a buzzing behind me, look round to see possibly the biggest wasp i have ever seen buzzing around my wonder light. needless to say got out pretty quick. now the confession about an hour later got my trainee to go up and clip the cable and retrive the light (no mention of the killer wasp). needless to say whilst wiring the panel i hear a rather girly scream as he jumps out the loft screaming there is a massive wasp up there. Got the light and cables cliped though.