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Vivotek ND9425P
H.265 16-CH embedded NVR with 16-port PoE and 2-bay RAID storage
SPECIFICATIONS · ND9425P
Full specifications
Specifications sourced from official manufacturer datasheet (link in hero).
About the Vivotek ND9425P
The Vivotek ND9425P is an SMB-class NVR built for the volume slot most integrators sell into — schools, mid-sized stores, hotels and clinics where camera counts hover around 12-16. Internal HDD capacity covers the most common retention windows (30-60 days at typical SMB bitrates). For installations bound to longer holds, the unit accepts external storage via eSATA / iSCSI without sacrificing channel count. In desktop form factor the unit installs in a back-office, server cupboard or small comms rack — no rack rails required and fan noise stays in the office-acceptable band. Built-in PoE on every channel (16 ports for 16 channels) lets the unit operate as a self-contained appliance — patch each camera directly into the back panel and the NVR powers, addresses and records them without an external switch. Convenient for small installs; on larger sites a dedicated managed PoE switch is still the cleaner architecture.
Best use cases for this recorder
Small retail & single-tenant office
Built-in PoE means the entire install fits in one cabinet — cameras patch straight into the recorder, no extra switch to specify or maintain. 16 channels cover a typical front-of-house plus stockroom and parking layout.
SMB site — office, school, clinic, hotel
The 16-channel/2-bay combination sits in the most-shipped slot for SMB CCTV: enough channels for a mid-sized site, enough storage for 30-60 day retention at typical commercial-camera bitrates.
4K/8MP camera deployments
Native support for 8 MP per-channel recording matches it to current-generation 4K cameras — useful when the install plan calls for fewer-but-higher-resolution cameras (typical of perimeter, parking, and identification-focused layouts).
Strengths
- •16 built-in PoE ports eliminate the need for an external switch on small installs
- •RAID 0/1 support protects archive against single-disk failure
- •H.265 codec roughly halves storage cost over legacy H.264 installs
- •ONVIF compliance lets the unit record from third-party cameras, not just the same-brand catalog
- •Compact chassis fits in a half-height comms cabinet or office bench
Considerations
- •Average per-channel ingest budget is below typical 4K bitrates — restrict high-MP channels or accept lower bitrate per camera
Storage planning
Running all 16 channels at the industry-typical 4 Mbps/channel H.265 CBR (15 fps, 4 MP scene complexity), the ND9425P produces roughly 675 GB of footage per day — about 4725 GB/week, 20250 GB/month, and 60750 GB across a 90-day retention window. Fully populated with 2× 16 TB drives the unit holds 32 TB raw — enough for roughly 1.6× the one-month archive at full bitrate before RAID overhead. These figures are deterministic — derived from your bitrate assumption, the channel count, and the calendar — not estimated from a marketing data sheet.
Estimates assume 4 Mbps per channel H.265 CBR continuous recording. Motion-only recording typically reduces storage by 40-70%.
Bandwidth headroom
Input (ingest)
Avg 4.0 Mbps per channel — enough for all channels at full 4MP H.265 at 4 Mbps/channel.
Output (playback)
Sets the ceiling for simultaneous remote playback streams to mobile and web clients.
Installation tips for the ND9425P
Locate on a shelf in a ventilated, lockable cupboard — desktop units pull dust through the chassis quickly when sat on a carpeted floor, and the HDDs need ambient temperatures under 30 °C for rated life.
Plan storage at roughly 675 GB/day (≈20250 GB/month) for continuous H.265 recording at 4 Mbps/channel — match HDD capacity to the longest retention window the privacy policy or insurance contract demands.
Distribute high-power cameras (PTZ, heated housings) across the 16 built-in PoE ports — concentrating them on a single port group can exceed the per-port PoE budget even when the chassis total has headroom.
Place the recorder on a dedicated VLAN with the cameras — separating CCTV traffic from office VLANs avoids broadcast storms degrading recording quality during busy network hours.
Power & rack
Power draw sits at roughly 40 W idle and around 210 W under full load (2-bay HDD activity plus 200 W of PoE delivered to cameras). That dissipates approximately 717 BTU/hour of heat into the rack — size the comms-cabinet ventilation accordingly. On desktop placement, raise the unit on rubber feet or a vented tray rather than directly on carpet — the chassis pulls cooling air through bottom intakes and dust ingress is the primary cause of premature HDD failure.
Installer time & cost (rough estimate)
A typical EU integrator quotes 5-7 h of labour to commission the Vivotek ND9425P (approximately €225-€315 excluding hardware), broken down as physical install, HDD population and RAID set-up, 16-channel discovery and IP/credential configuration, schedule + retention setup, motion / event rules per camera, mobile-app pairing, and a brief operator handover. Allow extra time for sites with non-standard network topology (multi-VLAN, multi-site bridges) or for migrations from a legacy DVR where camera streams must be re-addressed.
Indicative EU 2024-2025 pricing — actual quotes vary by region, network topology and migration scope. Excludes hardware, HDDs, transport, permits, and VAT.
Frequently asked questions
How many cameras can the Vivotek ND9425P record?
Up to 16 IP camera channels per chassis. Total ingest bandwidth is 64 Mbps, which sets the practical ceiling — running every channel at 4K (typically 8 Mbps each) requires 128 Mbps, so verify whether your camera plan fits inside the bandwidth budget.
Does the Vivotek ND9425P support third-party (ONVIF) cameras?
Yes — ONVIF Profile S/T support means the unit records from third-party cameras as well as the same-brand catalog. Most cameras supporting ONVIF 16.12 or newer plug-and-play; older firmware may require manual stream URL configuration in the NVR web UI.
How much storage does the Vivotek ND9425P need for 30-day recording?
At the industry-typical 4 Mbps per channel H.265 CBR (15 fps, 4 MP scene), all 16 channels recording continuously for 30 days produces approximately 20250 GB (19.8 TB) of footage. Motion-only or event-triggered recording typically cuts that by 40-70 % depending on scene activity. Plan HDD capacity for the longest retention window your privacy policy or insurance contract demands.
What HDDs are recommended for the Vivotek ND9425P?
Use surveillance-rated HDDs — WD Purple, Seagate SkyHawk, Toshiba S300, or equivalent. Desktop / consumer drives (WD Blue, Seagate Barracuda) are not validated for 24/7 write workloads and typically fail within 12-18 months in CCTV use. Max 16 TB per bay across 2 bays = up to 32 TB raw capacity; populate matched pairs/sets if planning RAID.
Does the Vivotek ND9425P need its own PoE switch?
Not on small installs — 16 built-in PoE ports power and connect cameras directly to the recorder. On larger sites a dedicated managed PoE switch is still the cleaner architecture: separate failure domain, larger PoE budget, easier replacement.
What power and cooling does the Vivotek ND9425P need?
Plan for 40 W idle and ~210 W under full load, dissipating roughly 717 BTU/hour into the rack or cupboard. Size the UPS for at least 15-minute hold-up so the unit can flush write buffers and shut down cleanly on mains failure — abrupt power loss is the leading cause of NVR file-system corruption in commercial installs.
Is the Vivotek ND9425P suitable for evidentiary recording?
Depends on the retention and chain-of-custody policy. The 2-bay chassis supports basic mirroring on the install side, but lacks declared RAID 5/6 parity — verify with the vendor whether RAID is supported in newer firmware On the export side, ensure footage is hashed and timestamped before transfer to investigators.
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Helpful Tools & Resources
Storage Calculator
Match HDD capacity to your retention policy
Bandwidth Calculator
Verify your network can carry the ingest load
Camera Quantity Calculator
Match channel count to your site
UPS Sizing Calculator
Hold-up time for clean NVR shutdown on mains failure
System Budget Estimator
Hardware + install + commissioning cost
CCTV Storage Planning Guide
Bitrate, retention, RAID — the full math
Plan your CCTV layout with Vivotek ND9425P
Use our free CCTV planner to lay out cameras feeding this recorder, match HDD capacity to retention windows, and generate a professional PDF report — no signup required.
Free until you outgrow it · No card · No install