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CCTV Drive and RAID Layout Planner

Turn a recording target into NVR or NAS drive layouts, then check one-drive failure behavior and rebuild-time write headroom.

Layouts compared: Single drive, RAID 1, RAID 5, RAID 6

How a beginner should read the result

  1. Check whether each layout meets the target recording capacity.
  2. The one-drive-failure column estimates array-data accessibility only. Recording continuity and performance are device-dependent.
  3. If rebuild write utilization exceeds 70%, test for dropped or delayed recordings on the real device.
  4. Verify the exact NVR model's official RAID support, maximum drive size, and surveillance CMR-drive compatibility.
RAID is not an incident-footage backup. Export important clips to another device before rotation overwrites them, then test playback. RAID 1 and 5 have no further drive-failure margin after one failure; RAID 6 retains one.

Performance-model limit

Available rebuild-time write speed simply subtracts the entered rebuild load from the measured array rate. Firmware, random I/O, rotation deletes, indexing, and temperature can change the real result.