— CCTV Storage · 8MP
Hanwha Wisenet XNB-9002 (4K) storage & retention
Problem. An 8MP camera at H.265 shifts the storage conversation from 'how many terabytes' to 'how many camera-days'. Once a fleet of Hanwha Wisenet XNB-9002 (4K) units is set to continuous recording at a 30-day hold, the daily footprint per camera becomes the number that decides the whole head-end.
Answer. For 16 Hanwha Wisenet XNB-9002 (4K) cameras recording continuously (24/7) at a 30-day retention, the working figure is about 52 TB of usable storage, or roughly 108 GB per camera per day. At that camera count the recorder sits in the Entry NVR architecture class.
02 / In depth
How this preset reads — the engineering view.
The XNB-9002 (4K) records 8MP video with H.265 compression at a typical 10 Mbps and 30 fps, which works out to roughly 108 GB per camera per day of continuous footage. H.265 is the reason that figure is manageable at all - the same 8MP stream on plain H.264 would need materially more bitrate to hold comparable detail, so the smart codec is doing real work before any schedule or motion setting is touched.
Multiply one camera's daily figure across the fleet and the timeline: 16 cameras x 108 GB/day x 30 days lands at approximately 52 TB. The relationship is linear, so stepping retention to 45 or 60 days, or adding cameras beyond 16, scales the total in direct proportion - there is no discount for scale in raw storage terms. At 16 cameras and this bitrate, the recording head-end falls in the Entry NVR class, which is the practical ceiling this preset is built around.
Inside the calculator, drag the camera-count slider and the retention-days field to see the total recompute instantly, and switch the recording schedule from continuous to a motion-only setting to see the duty factor pull the estimate down - motion-triggered recording only stores the portion of the day with detected activity, so the effective daily footprint per camera drops well below the continuous figure.
The calculator does not decide the exact bitrate a given scene will produce (busy, high-motion scenes push H.265 output above the 10 Mbps average used here, while static scenes push it below), it does not add RAID or redundancy overhead, it does not size a failover or archive tier, it does not check network write throughput against camera count, and it does not choose an exact drive make or model - those remain engineering decisions for the actual deployment.
What this preset deliberately does not solve
- The 10 Mbps figure is a scene-average bitrate for H.265 at 8MP/30fps; genuinely busy or high-motion scenes will push actual per-camera usage above this estimate, and static scenes below it.
- The continuous 24/7 default assumes recording never stops; switching to a motion-only or scheduled recording profile changes the effective daily storage well below the figures shown here.
- The estimate is raw usable capacity only - it does not include RAID, redundancy, or archive-tier overhead, which add to the physical drive capacity actually required.
How this preset differs from its siblings
The XNB-9002 (4K)'s 8MP sensor and H.265 codec produce a materially different daily footprint than lower-resolution or H.264-only cameras - resolution and codec are the two biggest levers on storage math, ahead of camera count or retention window. A camera at a different megapixel class or bitrate profile would land on a different preset entirely, which is why this page is scoped to this specific model rather than folded into a generic 8MP example.
03 / Hydrated calculator
Try the configuration — live.
The calculator below is preloaded with this preset’s state. Adjust any input — your URL stays shareable.
— Calculator · CCTV storage retention
Cameras, codec, retention — storage estimated.
Pick a camera brand and model, recording schedule and retention window. The calculator returns storage volume, HDD plan, recorded bandwidth and an NVR / VMS class recommendation. Sources cited per profile.
Storage estimated
64.3
TB · 30-day retention
Recorded bandwidth
160
Mbps to NVR / VMS
Architecture
Entry NVR
Entry NVR (8–16 channel)
Indicative planning figure on the H.265 bitrate assumption above — real recording rate varies with scene activity, motion and lighting. Confirm against a site survey and a test-recording sample before sizing the final storage array.
A planning link — not a quote.
- camera
- Hanwha Wisenet XNB-9002 4K
- resolution
- 3840 × 2160 (8MP)
- codec
- H.265 · 30 fps
- bitrate
- 10 Mbps per camera
- duty
- 24/7 continuous
- bandwidth
- live 160.0 Mbps · recorded 160.0 Mbps
- 8 TB drives
- 9 drives
- 10 TB drives
- 7 drives
- 16 TB drives
- 5 drives
Reference 4K box camera with WiseStream III smart codec. Strong for harsh-lighting scenes (industrial, hospitality back-of-house).
What changes this estimate
- Scene activity & motion in the actual footage
- Final camera codec & bitrate ladder
- Retention policy confirmed with the client
- Test-recording sample on site
A planning link — not a quote.
· Other presets for cctv storage retention calculator
CCTV Storage · Retail
Retail store — 16 cameras, 30-day retention
A retail store with 16 4MP H.265 cameras needs 30 days of continuous recording for loss-prevention and incident review.
CCTV Storage · Industrial
Manufacturing facility — 32 cameras, 90-day retention
A manufacturing facility with 32 cameras at 4MP H.265+ needs 90-day continuous retention for safety-incident review and process audit.
CCTV Storage · 8MP
Hikvision DS-2CD2387G2-LU (ColorVu 8MP) storage & retention
A fleet of Hikvision DS-2CD2387G2-LU (ColorVu 8MP) cameras generates far more footage per day than a lower-resolution camera, so storage sizing has to start from this camera's actual bitrate rather than a generic rule of thumb. Get the drive capacity wrong at design stage and a 30-day retention promise quietly shrinks the moment continuous recording begins.
CCTV Storage · 4MP
Hikvision DS-2CD2143G2-I (4MP Dome): storage & retention
A fleet built around the Hikvision DS-2CD2143G2-I (AcuSense 4MP Dome) puts a real number on what 30-day continuous retention costs in raw storage, and that number is easy to underestimate at 4MP. The right question is not just how large a single camera's footage is, but how the count of cameras, the retention window and the recording schedule compound into a head-end and drive plan.
CCTV Storage · 8MP
Hikvision DS-2CD2T87G2-L (ColorVu 8MP) storage & retention
A fleet of Hikvision DS-2CD2T87G2-L (ColorVu 8MP Bullet) cameras recording continuously puts real weight on the storage decision — 8MP frames at a typical 16 Mbps bitrate accumulate fast, and under-sizing the NVR is the single most common CCTV retrofit mistake. The question a buyer actually needs answered is how many terabytes a 30-day continuous-recording policy demands, and what class of head-end that quantity of storage implies.
CCTV Storage · 4MP
Hikvision DS-2DE4425IW-DE(T5) 4MP PTZ — storage & retention
A site standardising on the Hikvision DS-2DE4425IW-DE(T5) 4MP 25x PTZ needs to size an NVR and disk array before deciding how many cameras it can run and for how long, since a 25x PTZ's 4MP sensor at continuous frame rates writes meaningfully more data per day than a fixed 2MP dome.
CCTV Storage · 8MP
Dahua IPC-HFW5849T1-ASE-LED (8MP TiOC) storage & retention
Sizing storage for a fleet of the Dahua IPC-HFW5849T1-ASE-LED (8MP TiOC) is not a guessing exercise once resolution, codec, and frame rate are fixed. The real decision is how many days of continuous 8MP footage a site needs to retain, and what head-end class of NVR that retention actually demands.
CCTV Storage · 12MP
Dahua DH-IPC-EBW81242N (12MP Fisheye) storage & retention
A fleet of Dahua DH-IPC-EBW81242N (WizMind 12MP Fisheye) cameras generates far more data per hour than a typical 2MP or 4MP dome, so the real decision is not whether to record but how much NVR and drive capacity a 30-day retention policy actually demands. Getting the storage math wrong at design stage means either an under-built NVR that overwrites footage early, or an over-built one that wastes budget on capacity nobody needed.
CCTV Storage · 4MP
Dahua DH-IPC-HFW2431S-S-S2 (4MP) — storage & retention
A site standardising on the Dahua DH-IPC-HFW2431S-S-S2 (Lite 4MP IR Bullet) needs to know what a fleet of these cameras actually costs in storage terms before the NVR and drive array are specified. The real decision is not the camera — it is what 30 days of continuous recording across the fleet does to the head-end architecture.
CCTV Storage · 8MP
Axis P3268-LVE — storage & retention planning
An 8MP camera recording continuously produces a meaningfully larger daily file than the 2-4MP cameras most storage rules of thumb are written for, so a fleet-level estimate has to start from this camera's own bitrate rather than a generic assumption. Getting the per-camera-per-day figure right before specifying an NVR avoids under-sizing storage or over-buying a head-end class the fleet does not need.
CCTV Storage · 2MP
Axis AXIS P3245-LV (2MP) — storage & retention
A fleet of Axis AXIS P3245-LV (2MP) dome cameras recording continuously for 30 days needs a head-end sized before the NVR is ordered, not after. Getting the per-camera daily footprint wrong at the planning stage means a disk array that either runs out of retention early or sits over-provisioned.
CCTV Storage · 2MP
Axis Q6135-LE storage & retention (2MP, H.265)
A fleet of Axis Q6135-LE cameras recording continuously raises a straightforward but easy-to-underestimate question: how much usable storage does 30-day retention actually demand, and what class of head-end can hold it. Get the sizing wrong and a project either overspends on drive bays it does not need or runs out of retention days before the footage is reviewed.
CCTV Storage · 8MP
Hanwha XNV-9083R (4K AI IR Vandal Dome) storage & retention
A fleet of Hanwha XNV-9083R 8MP vandal dome cameras recorded continuously raises a real storage-sizing question: how much usable capacity does 30 days of 24/7 recording actually need, and what class of NVR head-end that capacity implies.
CCTV Storage · 8MP
Bosch FLEXIDOME IP starlight 8000i (4K) storage & retention
An 8MP camera recording continuously generates far more footage than a 2MP or 4MP unit, so a fleet-wide storage and NVR plan needs to be sized around the actual bitrate this model produces, not a generic rule of thumb. Getting the 30-day retention figure right up front avoids a mid-project scramble to add drives or swap the head-end once real footage volumes show up.
CCTV Storage · 8MP
Uniview IPC2328SB-DZK-I0 (8MP) storage & retention
A fleet of Uniview IPC2328SB-DZK-I0 (8MP LightHunter) cameras generates far more footage per day than a 2MP or 4MP fleet, so the real decision is how much drive capacity and what NVR class a 30-day retention policy actually needs. Getting the storage math wrong at design stage means a mid-project drive upgrade or a head-end that cannot keep pace with continuous recording.
CCTV Storage · 5MP
Vivotek FD9389-HM (5MP Dome) storage & retention
A fleet of Vivotek FD9389-HM 5MP dome cameras recording continuously will fill a head-end far faster than the same count in 2MP, so the storage math has to be worked out before the NVR and disks are chosen. The real decision is not the camera itself but how many days of footage the site needs to keep at that resolution, since retention is what drives the drive count.
CCTV Storage · 8MP
Avigilon H6A Dome (8MP) storage & retention
A fleet of Avigilon H6A Dome (8MP) cameras generates far more footage per day than a standard-definition camera, so a 30-day retention target can quietly outgrow a modest NVR if storage is sized by guesswork. Getting the per-camera daily figure right before ordering hardware avoids either an under-sized head-end or an over-bought one.
CCTV Storage · 5MP
Milesight AI Mini Dome 5MP: storage & retention
A fleet of Milesight AI Mini Dome 5MP cameras generates meaningfully more footage per day than a 2MP or 4MP line, so sizing the NVR and drive pool around guesswork risks either wasted spend or a retention window that runs out early. The real decision is how many days of continuous 5MP footage a given camera count must hold, and what head-end class that implies.
· Next
Brief us on the project — with this configuration.
Presets are a typology starting point. The brief wizard captures the room geometry, programme and constraints we need to translate this configuration into a real design.