Axis AXIS P3245-LV (2MP) — storage & retention

The 2MP sensor at a typical 2 Mbps (30 fps) with Zipstream is the storage driver for this model — worked through continuous recording that comes to roughly 22 GB per camera per day. Zipstream is Axis's smart codec: it holds detail where a scene is active and lets static regions compress harder, so the recorded bitrate tracks real scene activity rather than staying pinned at a worst-case constant rate the way plain H.264 often does.

Scaling is linear from that per-camera figure: 16 cameras × 30 days of continuous recording is the roughly 10 TB result shown here. Add cameras or extend the retention window and the total moves in direct proportion — 32 cameras or 60 days each roughly double it. At 16 cameras and this bitrate, the recording head-end falls in the Entry NVR class rather than a multi-bay enterprise array.

Use the calculator by adjusting camera count, retention days and recording schedule to see the storage total recompute live. Switching the schedule from continuous ("always-on") to motion-only applies a duty-cycle factor that reduces recorded hours per day, which cuts the storage figure well below the continuous-recording baseline shown in this preset.

The calculator does not decide real-world scene-activity variance (Zipstream's actual bitrate moves with motion, lighting and clutter, so the 2 Mbps figure is a planning average, not a guarantee), RAID or storage-redundancy overhead, a failover or long-term archive tier, network write throughput at the switch, or the exact drive make-up and count for the physical build.