Synology NAS vs Traditional NVR: Which Is Better for Business Surveillance?
A network video recorder (NVR) is an appliance built for one job: recording cameras. It is inexpensive, quick to install, often has PoE ports to power the cameras directly, and usually comes with a fixed number of channels at no extra licence cost. A NAS running surveillance software, such as Synology's Surveillance Station, does the same recording on a general-purpose storage system, which makes it more flexible: mixed camera brands, drive redundancy, easy capacity expansion, better backup options and management of several sites. It costs more to set up and may need camera licences. For a single small site using one brand of camera, an NVR is usually the better buy. For a business that wants longer retention, mixed cameras, redundancy or several locations, a NAS earns its extra cost.
How do they compare?
| Traditional NVR | NAS with surveillance software | |
|---|---|---|
| Purpose | Dedicated recorder | Storage system that also records |
| Up-front cost | Lower | Higher |
| Camera licences | Channels included, fixed at 4, 8, 16 and so on | A few included; more bought per camera for third-party cameras |
| Camera brands | Best with the same brand; others with reduced features | Wide support across brands via common standards |
| PoE ports for cameras | Often built in | No; needs a separate PoE switch |
| Drive bays | Often 1 to 4 | 2 to 12 or more, with expansion units |
| Drive redundancy | Limited on small models | Standard RAID options |
| Expanding capacity later | Replace drives or the unit | Add drives or an expansion unit |
| Backup of footage | Basic export | Scheduled backup and replication to other devices or sites |
| Multi-site management | Vendor's cloud or client software, within one brand | Central management of several recorders |
| Other uses | None | File sharing, PC backup and more, if desired |
| Set-up effort | Low: plug in cameras | Moderate: network, storage and software to configure |
| Software updates over time | Varies; often limited | Regular, across the product line |
Individual products differ; treat this as the general pattern and check the specifications of the models you are comparing.
When is an NVR the better choice?
- One site, with up to the number of cameras the NVR has channels for.
- Cameras and recorder from the same manufacturer, so every feature works together.
- Retention of a few weeks, which fits in the available bays.
- A tight budget and little IT support on hand.
- A system the installer can commission in an afternoon.
Built-in PoE is a real convenience at this scale: one box, one cable per camera, no separate switch to size.
When is a NAS the better choice?
- Mixed or changing cameras. Existing cameras of several brands, or freedom to choose the best camera for each position.
- Long retention or many cameras, needing more bays than an NVR offers. See how much storage for 30, 60 or 90 days.
- Footage that must survive a drive failure.
- Several offices or outlets viewed and managed together. See centralised CCTV for multiple offices.
- Off-site copies of recordings for important cameras.
- Growth. Cameras and capacity added over years without replacing the recorder.
- Integration with other systems, or analytics beyond the basics.
What does each really cost?
Compare the whole system, not the recorder.
| Item | NVR system | NAS system |
|---|---|---|
| Recorder | NVR | NAS |
| Drives | Surveillance drives | Surveillance drives, usually more of them |
| PoE | Often included in the NVR | Separate PoE switch |
| Licences | Usually none | Per additional third-party camera |
| Cameras | Same either way | Same either way |
CALC. For 12 third-party cameras on a NAS that includes 2 licences, 12 - 2 = 10 additional licences are needed. That is a one-off cost per camera which an NVR with 16 included channels does not have. Using the manufacturer's own cameras, where they need no licence, removes it. Licence counts and terms are set by the vendor and change; confirm before budgeting.
An NVR is a product. A NAS is a platform. Buy the product when the job is fixed and small; buy the platform when you expect the job to grow or change.
Can you use both?
Yes, and it is a sensible design for multi-site businesses: a small NVR or NAS recording locally at each outlet, with a NAS at head office holding copies of important cameras or events and providing one place to review footage. Local recording keeps working when the link between sites is down.
What should be the same whichever you choose?
- Surveillance-rated drives.
- Cameras and recorder on their own network segment, not reachable directly from the internet.
- Default passwords changed and firmware kept current. See who is guarding your network.
- A UPS.
- A written retention period and CCTV notices. See office CCTV and PDPA.
- A periodic check that recording is actually happening on every camera.
For what the AI features add on either platform, see AI cameras vs traditional CCTV and Synology Surveillance Station with AI cameras.
Buying in Singapore
NAS route: the Synology DS925+ (S$1,260) or Synology DS1825+ (S$2,148), with the Synology BC510 or TC510 AI cameras (S$276 each). Drives for either route: Seagate SkyHawk from S$158 and SkyHawk AI from S$567.50 (listed 12 Nov 2026; prices change; ask for a current quotation). NVR route: the TP-Link VIGI NVR2016H-16MP 16-channel PoE+ recorder and VIGI cameras such as the VIGI C485 are price on request. To start, use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg or use our contact page.
Frequently asked questions
What is the difference between a NAS and an NVR? An NVR is a dedicated appliance for recording network cameras. A NAS is a general storage system that can record cameras using surveillance software, with more flexibility in storage, camera choice and backup.
Is a NAS better than an NVR for CCTV? It depends. An NVR is cheaper and simpler for a small single-site system. A NAS suits mixed cameras, long retention, drive redundancy, off-site copies and multiple sites.
Do NVRs need camera licences? Usually not. An NVR typically includes a fixed number of channels. NAS surveillance software generally includes a few licences and charges for additional third-party cameras.
Does a NAS have PoE ports for cameras? Generally no. Cameras connect through a separate PoE switch, whereas many NVRs have PoE ports built in.
