Video surveillance storage means two things, and both matter if you are about to rent a unit. The first is how camera footage is recorded and kept: on an SD card, a DVR or NVR, or in the cloud. The second is what that system does for you as a renter, which is give a facility a record of who came and went. Below we cover how much space footage takes, how long it is usually kept, and what good camera coverage looks like at a self-storage facility.
TL;DR
- Footage lives in one of four places: on the camera (edge), on an on-site recorder (NVR or DVR), in the cloud, or in a hybrid of these.
- Space needed depends on camera count, resolution, bitrate, compression, recording mode and retention days. Continuous recording fills disks fastest.
- For self-storage, 30 to 90 days of retention is a commonly cited design range.
- A facility with cameras, gated entry and kiosk-based access gives you layers of protection, not just one.
- Inline Storage in South San Antonio offers video surveillance, gated entry, drive-up access and a 24-hour kiosk.
Table of Contents
- Where surveillance footage is stored
- How much storage does footage need?
- How long is footage kept?
- Local, cloud or hybrid: how the trade-offs play out
- What this means for your storage unit
- Our perspective
- Find a monitored unit in South San Antonio
- FAQ
- Sources
Where surveillance footage is stored
SDM Magazine sorts storage into four general categories: on-premise storage (NVRs, DVRs, SAN, NAS), cloud storage, hybrid storage, and edge storage, which means high-capacity SD cards inside the cameras.
| Storage type | Where footage lives | Main strength | Main trade-off |
|---|---|---|---|
| SD card (edge) | Inside the camera | Low cost, no recurring fee | Small capacity, one device per card |
| NVR or DVR | Recorder with hard drives on site | Weeks or months of footage from many cameras | Needs on-site hardware |
| Cloud | Remote servers | Off-site access and backup | Typically a recurring subscription |
| Hybrid | Camera or recorder plus cloud | Redundancy and flexibility | More parts to manage |
A Reolink buying guide makes the same split: NVRs suit IP cameras and multi-camera systems with 24/7 recording, microSD cards suit single cameras with no recurring fees, and cloud storage gives off-site access and backup but usually needs a subscription.
SD cards: small but useful
Security Camera King says a 128GB microSD card holds about 5 to 7 days of motion-activated footage. That suits a single camera or an in-camera backup. Recorders, by contrast, hold hard drives ranging from 1TB to 160TB for many cameras.
NVR vs. DVR
The difference is where the video is encoded. According to Hanwha Vision, an NVR works with IP cameras that encode video at the camera and send it over a network to a central recorder. A DVR receives raw analog video over coaxial cable and encodes it at the recorder. Amcrest's support documentation adds that NVRs offer higher resolutions and PoE connectivity, while DVRs are typically cheaper, especially when old coaxial wiring is reused.
Cloud storage
Yes, footage can be stored in the cloud. For self-storage, Inside Self Storage notes that cloud-based surveillance gives 24/7 visibility from phones, tablets and computers. It also says footage stays accessible online if a camera is stolen, painted over or broken.
Cloud costs add up over time. As of 2025, Reviews.com lists one major home-camera plan at $8 a month ($80 a year) for 30 days of event history, and another at $4.99 a month per device. Those are home prices, but they show why long retention in the cloud is a recurring cost.
Hybrid setups
Many systems now mix methods. SDM Magazine reports that SD cards are increasingly used in hybrid setups, for example an on-camera card with a cloud service as backup. It cites Axis Communications saying this lets users record 24/7 locally and keep only event-related video in the cloud.
How much storage does footage need?
Four things drive the answer more than any others: how many cameras you have, how much data each stream produces, how many hours a day you record, and how many days you keep the footage.
Seagate's NVR guidance lists camera resolution and frame rate, compression format, camera count and retention period as the key factors. Genetec's administrator guide adds the percentage of video protected from deletion, frame rate, image resolution, the amount of movement in the scene, audio and metadata. It also says continuous recording consumes disk space faster than motion, manual or scheduled modes.
A simple calculation
The planning approach is to estimate the recorded data, not the raw disk size. Terapixels gives a useful anchor: one camera recording at an average of 1 megabit per second for 24 hours produces about 10.8 decimal GB of video.
Here is a worked example using that figure:
- One camera averaging 2 Mbps: 2 × 10.8 = 21.6 GB per day.
- Four cameras: 4 × 21.6 = 86.4 GB per day.
- Thirty days of retention: 86.4 × 30 = 2,592 GB, or about 2.6 TB.
- Add a headroom allowance. At 20 percent, you would plan for roughly 3.1 TB.
The 20 percent is only an example. STARK's estimating guide recommends choosing a headroom allowance and treating usable capacity separately from raw disk capacity. It also warns against motion-saving assumptions nobody has checked.
Bitrate matters more than resolution alone. OmniNVR advises estimating from measured bitrate and scene activity, because a busy driveway produces far more data than an empty hallway. Mission Link Networks makes a similar point: pressure-test your assumptions before you size a system.
Planning capacity for a property
A facility with many cameras across long drive aisles needs a different recording plan than a single hallway. For a look at how installers think about camera coverage and recording capacity on large properties, that guide walks through the coverage side of the same planning problem.
How long is footage kept?
Retention is a decision, not a default. OmniNVR advises sizing self-storage systems for 30 to 90 days from incident discovery. That window should reflect contract obligations, insurer requirements, storage throughput and the cost of keeping busy scenes. Another self-storage camera guide cites the same 30 to 90 day range and ties it to state lien and abandoned-property procedures, insurer minimums for theft coverage and company policy.
For general systems, Safe and Sound reports that cloud plans typically keep footage 7 to 90 days depending on subscription, while NVR and DVR systems commonly keep 30 to 90 days or more depending on capacity and configuration.
Retention also isn't one number. Rhombus documents different windows for saved clips, alerts, face images and license plate images, and says video retention depends on camera model, resolution and bitrate settings, and motion.
Local, cloud or hybrid: how the trade-offs play out
The right answer depends on what you are protecting and how reliable your connection is.
- Local recording has no transit cost and keeps full-quality video, but it needs hardware on site, according to Mission Link Networks.
- Cloud recording moves retention off-site and makes it easy to review several locations. It brings monthly per-camera costs and upstream bandwidth limits.
- Hybrid recording keeps full-quality footage locally for a short period and syncs lower-bitrate clips to the cloud for longer, searchable retention.
Verkada's guide points to a practical risk: cloud fees rise with each extra gigabyte, and a network outage can mean permanently lost footage if no local copy exists. Good design asks what happens when something fails, not only how big the drive is.
What this means for your storage unit
You are not buying a recorder. You are renting space, so the question is how a facility's whole security setup fits together. Cameras are one layer. Gated entry, controlled access and well-lit drive aisles are others.
Inside Self Storage's guidance on camera use in self-storage stresses confirming that each device records to the intended location and meets retention requirements. That is the standard a well-run facility holds itself to, and it is the reason camera placement matters as much as camera count: gates, kiosk, entrances and aisles.
A few things to look for when you tour or rent:
- Cameras covering the gate, the kiosk and the main driveways.
- Gated entry, so only people with codes get in.
- Good lighting and clear sight lines along unit rows.
- Insurance for your belongings, since cameras record events but do not replace coverage. Our post on getting your off-premises limit in writing explains what to confirm with your insurer.
For a fuller checklist, see our renter checklist on whether storage units are safe. To see how codes, kiosks and video fit together, read about renters' access control with kiosks and video.
Our perspective
We think the best security is layered, and cameras work best as one layer among several. A recording is valuable because it sits alongside controlled entry, good lighting and clear processes, not instead of them.
At Inline Storage, our South San Antonio facility is built around that idea. We offer video surveillance, gated entry, a 24-hour kiosk and drive-up access, so you can come and go on your schedule while the property stays controlled. Our Touchless Rentals™ system lets you rent online with minimal physical interaction, which means you can sort out your unit before you arrive.
We also like to keep things simple for the people we serve: movers, students, families clearing space for a renovation and small business owners with extra inventory. You should be able to pick a size, rent it and know the property around it is watched.
Ian
Find a monitored unit in South San Antonio
If you are comparing facilities, we make it easy to rent. Inline Storage offers units from lockers and 5x5 spaces up to 10x30, plus climate-controlled storage, RV storage and boat storage, all with month-to-month flexibility. You can see sizes on our South San Antonio self-storage page and rent online with Touchless Rentals™.
Need more room? Our 10x20 units and 10x30 units suit full-home moves and business inventory. You can also learn about our 24/7 contactless kiosk, or start from our homepage.
FAQ
Can surveillance footage be stored in the cloud?
Yes. Cloud storage uploads footage to remote servers, which gives you off-site access and a backup if a camera is damaged or stolen. It usually comes with a recurring subscription, and a network outage can interrupt uploads, so many systems pair it with local storage.
What is the difference between an NVR and a DVR?
An NVR records video from IP cameras that encode the footage at the camera and send it over a network. A DVR records from analog cameras over coaxial cable and encodes the video at the recorder. NVR systems generally support higher resolution and PoE connections, according to Amcrest.
Do security cameras store footage?
Most systems do, either on an SD card in the camera, on a recorder's hard drives or in the cloud. How long the footage lasts depends on the number of cameras, the video quality, the recording mode and the storage capacity. For self-storage facilities, 30 to 90 days is a commonly cited design range.
Are there cameras at storage facilities?
Modern self-storage facilities commonly use cameras as part of their security. At Inline Storage in South San Antonio, the facility features include video surveillance, gated entry and a 24-hour kiosk. Cameras are most useful when paired with controlled access, lighting and insurance for your belongings.
Sources
- Video Storage That Works for You, SDM Magazine
- Security Camera Recorder: NVR, DVR, SD Card or Cloud?, Reolink
- Security Camera Storage Options, Security Camera King
- NVR vs. DVR Security Systems Compared, Hanwha Vision
- NVR vs DVR, Amcrest
- Cloud-Based Video Surveillance, Inside Self Storage
- Nest vs. Ring, Reviews.com
- SD Cards in IP Video, SDM Magazine
- NVR Storage Explained, Seagate
- Archive storage, Genetec Security Center Administrator Guide
- Video Retention Calculator & Storage Planning Guide, Terapixels
- How to estimate CCTV storage without guessing, STARK
- NVR for Self-storage facility: U.S. Guide, OmniNVR
- Camera retention sizing, Mission Link Networks
- NVR storage architecture for retail, Mission Link Networks
- Camera coverage for shopping centers, Low Voltage Corp
- Self-Storage Security Camera Systems, IP Security Depot
- How Long Do Security Cameras Keep Footage?, Safe and Sound
- Data and Clip Storage Retention, Rhombus Support
- Understanding Your Options for Extended Video Storage, Verkada
- A Tech-Forward Approach to Camera Use in Self-Storage, Inside Self Storage