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Ubiquiti UDM-SE
1U Dream Machine SE gateway with integrated 180 W PoE, NVR, up to 8× 4K cameras
SPECIFICATIONS · UDM-SE
Full specifications
Specifications sourced from official manufacturer datasheet (link in hero).
About the Ubiquiti UDM-SE
The Ubiquiti UDM-SE is a pro-class recorder for installs that have outgrown a single 16-channel unit but do not yet justify dedicated rack-cabinet hardware — multi-floor offices, retail flagships, factory cells, light-industrial yards. Built-in HDD capacity is intentionally lean; the unit is meant to be paired with a NAS, cloud archive, or sister recorder when retention beyond ~14 days at full bitrate is mandated. The 1U rack chassis slots into any standard 19-inch cabinet and pairs cleanly with a PoE switch and a UPS in a single half-height comms cabinet. Partial built-in PoE (8 ports for 24 channels) handles the closest cameras directly and pushes the remainder onto an external PoE switch. This split is common when the NVR sits near a cluster of cameras and the far cameras are reached through a switch in another room or floor.
Best use cases for this recorder
Multi-floor office, flagship retail, factory cell
24 channels absorb the per-floor camera count of a 3-5 story building, a retail flagship with stockroom and yard, or a factory cell with overhead and process cameras — without forcing a second unit on day one.
4K/8MP camera deployments
Native support for 4K 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
- •8 built-in PoE ports eliminate the need for an external switch on small installs
- •Compact chassis fits in a half-height comms cabinet or office bench
Considerations
- •Single HDD bay means no RAID protection — schedule regular backups or pair with a secondary NVR/NAS for redundancy
- •Codec support not declared in the datasheet — verify against the camera plan before commissioning to avoid CPU-bound transcoding
- •ONVIF support not declared — third-party cameras may need same-brand replacement or a brand-agnostic VMS instead of this recorder
- •No RAID support — single-disk failure means losing all footage on that disk; plan retention policy accordingly
Storage planning
Running all 24 channels at the industry-typical 4 Mbps/channel H.265 CBR (15 fps, 4 MP scene complexity), the UDM-SE produces roughly 1013 GB of footage per day — about 7088 GB/week, 30375 GB/month, and 91125 GB across a 90-day retention window. 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%.
Installation tips for the UDM-SE
Install in a standard 19-inch rack cabinet on supported rack rails; allow at least 1U of clearance above and below the 1U for airflow and HDD-bay servicing.
Plan storage at roughly 1013 GB/day (≈30375 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.
Schedule weekly off-site backups (NAS, cloud, or sister NVR) since the single-bay design has no internal redundancy — a failed disk loses the entire archive.
Distribute high-power cameras (PTZ, heated housings) across the 8 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.
Power & rack
Power draw sits at roughly 35 W idle and around 188 W under full load (1-bay HDD activity plus 180 W of PoE delivered to cameras). That dissipates approximately 641 BTU/hour of heat into the rack — size the comms-cabinet ventilation accordingly. Allow 1U of cabinet space for the chassis plus 1U of unobstructed airflow above and below; pair with a UPS sized for at least 15-minute hold-up so the recorder shuts down cleanly on mains failure.
Installer time & cost (rough estimate)
A typical EU integrator quotes 7-9 h of labour to commission the Ubiquiti UDM-SE (approximately €315-€405 excluding hardware), broken down as physical install, HDD population, 24-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 Ubiquiti UDM-SE record?
Up to 24 IP camera channels per chassis. The ingest bandwidth ceiling is not declared in the datasheet — confirm with the vendor before specifying high-bitrate (4K, 12 MP) cameras across all channels.
Does the Ubiquiti UDM-SE support third-party (ONVIF) cameras?
ONVIF compliance is not declared in the official datasheet for this model — assume same-brand cameras only, or verify with the vendor before pairing it with non-Ubiquiti hardware.
How much storage does the Ubiquiti UDM-SE need for 30-day recording?
At the industry-typical 4 Mbps per channel H.265 CBR (15 fps, 4 MP scene), all 24 channels recording continuously for 30 days produces approximately 30375 GB (29.7 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 Ubiquiti UDM-SE?
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. Match drive capacity across bays if planning RAID — mixed capacities default to the smallest disk size per stripe.
Does the Ubiquiti UDM-SE need its own PoE switch?
Not on small installs — 8 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 Ubiquiti UDM-SE need?
Plan for 35 W idle and ~188 W under full load, dissipating roughly 641 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 Ubiquiti UDM-SE suitable for evidentiary recording?
Depends on the retention and chain-of-custody policy. The 1-bay chassis is single-disk only; for evidentiary recording, pair with a secondary NVR or NAS for redundancy. 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 Ubiquiti UDM-SE
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