CCTV Hard Disk Calculator
Find the Right Storage for Your Security Cameras
When installing a CCTV system, one of the most common questions is: “How much hard disk space do I need?
Our CCTV Hard Disk Calculator helps you estimate the required storage based on your camera type, resolution, frame rate, recording hours, and number of days you want to keep footage.
CCTV Hard Disk Calculator
Why Use a CCTV Storage Calculator?
Choosing the wrong hard disk size can lead to:
Footage Overwriting Too Soon – Important video files may be lost.
Extra Costs – Oversized storage can waste money.
System Performance Issues – Using an incorrect drive can slow down recording.
Our calculator removes the guesswork so you can plan your CCTV storage accurately.
How the CCTV Hard Disk Calculator Works
The calculator uses the following factors to estimate storage:
Number of Cameras – Total connected to your DVR/NVR.
Video Resolution – 720p, 1080p, 4MP, 4K, etc.
Frame Rate (FPS) – Higher FPS means smoother video but larger files.
Recording Hours Per Day – Continuous or motion-based recording.
Retention Period – Days you want to store footage.
Compression Type – H.264, H.265, or H.265+
Example Calculation
For example:
8 cameras
1080p resolution
15 FPS
24 hours recording per day
30 days storage
H.265 compression
The calculator might recommend: 4TB Surveillance Hard Disk.
Best Hard Drives for CCTV
For reliable recording, always choose a surveillance-grade HDD such as:
Western Digital Purple
Seagate SkyHawk
Toshiba S300 Surveillance
These are designed for 24/7 operation and longer lifespan compared to normal PC drives.
Try Our CCTV Hard Disk Calculator Now
Simply enter your camera details below and get your storage requirement instantly.