Convert exact camera bitrates, recording duty and retention into daily writes, required TB, usable-capacity headroom and achievable days without relying on a resolution preset.
How much usable CCTV storage does this exact bitrate plan need?
Add the exact average bitrate of each camera group, apply only the scheduled recording duty, then keep filesystem/metadata allowance and capacity reserve visible. Resolution or codec labels alone cannot prove retention.
Method
Mbps is converted to decimal GB from effective recording seconds. Retention multiplies the daily write; overhead and reserve are separate factors. Enter post-RAID usable capacity, not drive-label capacity.
Important limitation
Scene activity, variable bitrate, audio, analytics, firmware, failover, filesystem, RAID and real disk health can change usage. Measure the installed stream and verify the exact recorder compatibility list.
What the result cannot know
Scene activity, variable bitrate, audio, analytics, firmware, failover, filesystem, RAID and real disk health can change usage. Measure the installed stream and verify the exact recorder compatibility list.
