How Long Is CCTV Footage Stored? Storage, Retention and Hard Drives Explained
One of the most painful discoveries after an incident is finding that the CCTV footage is gone. A business notices a stock loss after two weeks, checks the recorder, and learns it only keeps five days. A family returns from a trip to find a break-in, but the footage from the first night has been overwritten. Understanding CCTV footage storage prevents this.
This guide explains how long CCTV footage is stored, what affects storage, how to size a hard drive, how long you should keep footage, and how to save evidence properly when something happens.
How CCTV footage storage works
Most CCTV systems in Kenya record to a hard drive inside a DVR (for analogue HD cameras) or NVR (for IP cameras). When the hard drive is full, the recorder automatically overwrites the oldest footage. This is called loop recording. The number of days kept depends on how quickly the drive fills.
Some systems also store footage in the cloud or on SD cards inside cameras.
What affects how long footage is kept
| Factor | Effect on storage |
|---|---|
| Number of cameras | More cameras fill the drive faster |
| Resolution | Higher resolution uses more space |
| Frame rate | More frames per second use more space |
| Compression (H.264, H.265) | Newer compression (H.265) uses less space |
| Recording mode | Continuous uses more space than motion-only |
| Scene activity | Busy scenes with movement use more space |
| Hard drive size | Larger drives hold more days |
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Continuous vs motion recording
| Mode | Advantages | Disadvantages |
|---|---|---|
| Continuous | Records everything; nothing missed | Uses the most storage |
| Motion-only | Stores more days on the same drive | May miss events if detection fails |
| Continuous with motion markers | Easy to find events, nothing missed | Uses more storage than motion-only |
| Mixed schedules | Continuous at night, motion by day, or vice versa | Needs careful set-up |
Many homes and businesses use continuous recording at key cameras such as gates and tills, and motion recording elsewhere.
How long should you keep CCTV footage?
The right retention period depends on how quickly you would notice a problem and need to review footage.
| Property | Suggested minimum retention |
|---|---|
| Home | 1 to 2 weeks, longer if you travel often |
| Shop | Time between stock counts, often 2 to 4 weeks |
| Office | 2 to 4 weeks |
| Warehouse or factory | 4 weeks or more, to cover investigations |
| SACCO or bank branch | Often longer, depending on internal policies |
| Estate gate | 2 to 4 weeks |
Also consider data protection: keep footage only as long as you genuinely need it. See CCTV and the Data Protection Act in Kenya.
Sizing a hard drive
A professional installer calculates storage from the number of cameras, resolution, compression and recording mode. As a rough guide, systems with more cameras, higher resolution and continuous recording need larger drives. Ask your installer to state the estimated number of days of CCTV footage storage in the quote, not just the drive size.
If your current system keeps too few days, options include:
- Installing a larger hard drive
- Adding a second drive if the recorder has space
- Switching some cameras to motion recording
- Using H.265 compression if supported
- Lowering resolution on less important cameras
Check your current retention
You can check how long your system keeps footage:
- Open the playback on your recorder or app
- Find the earliest date available
- Count the days to today
Do this now, before you need it. Many owners are surprised.
Saving evidence after an incident
When something happens, save footage immediately before it is overwritten:
- Find the exact time and cameras involved
- Export the footage to a USB drive or download it through the app
- Save more than just the incident: include a few minutes before and after, and other cameras that show approach and exit routes
- Keep an original copy unchanged
- Record who exported it, when and from which recorder
- Share copies with the police or insurer as needed
See what to do after a burglary.
Protecting the recorder
If thieves take the recorder, they take the evidence. Protect it by:
- Placing it in a hidden, locked location
- Using a lockable cabinet
- Keeping it on a UPS so it keeps recording during power cuts
- Using cloud backup for key cameras where possible
See CCTV during power outages.
Hard drive health
Hard drives in CCTV recorders run continuously and eventually fail. Signs of trouble include recording gaps, error messages and slow playback. Check drive health regularly, replace drives every few years or when errors appear, and use surveillance-grade drives designed for continuous recording. See CCTV maintenance checklist.
Cloud storage
Cloud storage keeps copies of footage off site, protecting it from theft or damage. It usually involves a subscription and uses internet bandwidth. Many properties use cloud storage for key cameras or motion events, while keeping full recordings on the local recorder.
Common CCTV footage storage mistakes
- Never checking how many days are stored
- Small hard drives in large systems
- Motion recording on critical cameras that then misses events
- Recorder easy to find and steal
- No backup power
- Waiting too long to export footage after an incident
Worked example: a warehouse in Industrial Area
A distributor discovered a stock shortage during a monthly count and went to review the footage, only to find that the recorder held just six days. The installer calculated that sixteen cameras recording continuously at the chosen resolution needed much more storage. The distributor upgraded to larger surveillance-grade drives, switched to H.265 compression and set perimeter cameras to motion recording while gates and loading bays stayed continuous. Retention rose to about five weeks, comfortably covering the monthly count cycle.
How Bestcare Security can help
We design CCTV systems with storage sized to your needs, set sensible recording schedules, protect recorders and train you to export footage when needed. Learn more about our CCTV monitoring services.
Local vs cloud CCTV footage storage
| Factor | Local recorder (DVR/NVR) | Cloud storage |
|---|---|---|
| Ongoing cost | Low after purchase | Monthly or annual subscription |
| Internet needed | No, for recording | Yes, reliable upload bandwidth |
| Protection from theft | Only if recorder is hidden | Footage is off site |
| Retention | Limited by drive size | Limited by plan |
| Speed of review | Fast on site | Depends on internet |
Many properties get the best of both: full recording on a hidden local recorder, with key cameras or motion events backed up to the cloud.
Retention settings on the recorder
Most recorders let you set a maximum retention period. This is useful for data protection, because footage is deleted automatically after a set number of days even if the drive still has space. Set it to match your policy, for example 30 days for an office, and document the setting.
Who should have access to footage?
Limit playback and export rights to a few trusted people. Use separate user accounts on the recorder and app rather than sharing one password, so you can see who viewed or exported footage. Remove access promptly when staff leave.
Backing up important footage
Once you export footage of an incident, keep at least two copies in different places, such as a USB drive locked away and a secure cloud folder. Label files clearly with the date, time, camera and incident. Do not edit the original file; make copies if you need clips for sharing.
Checking recording continuity
A recorder can appear to work while silently failing to record one camera. Once a month, play back a random hour from each camera to confirm recording is continuous, and check the recorder’s logs for errors. This simple habit makes sure your CCTV footage storage is there when you need it.
Planning storage when you expand
Adding cameras to an existing system shortens retention unless storage grows too. Whenever you add cameras or raise resolution, recheck the days of footage kept and upgrade drives if needed, so your CCTV footage storage still meets your policy.
Frequently asked questions
How long is CCTV footage stored?
It depends on the number of cameras, resolution, recording mode and hard drive size. Many systems store one to four weeks.
What happens when the hard drive is full?
The recorder overwrites the oldest footage automatically.
How can I store footage for longer?
Use a larger drive, add drives, use H.265 compression or motion recording on less critical cameras.
How long should businesses keep CCTV footage?
Long enough to cover how quickly losses are discovered, often two to four weeks or more.
How do I save footage for the police?
Export the relevant footage to a USB drive or download it, keep an original copy and record details of the export.
Should I use cloud storage?
It protects footage from theft or damage. Many properties use it for key cameras.
How often should CCTV hard drives be replaced?
Every few years or when errors appear. Use surveillance-grade drives.
Can I set the recorder to delete footage automatically?
Yes. Most recorders let you set a maximum retention period, which supports data protection policies.
How do I know my cameras are actually recording?
Play back a random hour from each camera monthly and check the recorder’s error logs.
Can Bestcare Security check my storage?
Yes. Call 0709 004 600 for a CCTV health check.
Related reading
- CCTV Installation Price in Kenya: What Affects the Cost
- How Many CCTV Cameras Do I Need for My Home or Business?
- Types of CCTV Cameras in Kenya: Which One Is Right for Your Property?
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