How Much Hard Drive Space Do You Need for a Hikvision CCTV System in Solihull?

One of the most common questions we get from businesses in Solihull is: "How much storage do we actually need for our CCTV system?"

For most small commercial Hikvision CCTV systems, somewhere between 2TB and 8TB is usually enough, depending on how many cameras are installed, the recording quality, how long footage needs to be kept, and whether the system records all the time or only when motion is detected.

For example, a small office or retail unit with 4 cameras may only need a 2TB or 4TB hard drive, while larger sites with more cameras will normally require much more storage. Choosing the correct storage setup is important because if the hard drive is too small, footage can end up being overwritten much sooner than expected.

At AddTek, we help businesses across Solihull choose the right Hikvision NVR and storage setup based on the size of the premises and how the system will actually be used day to day.

You can also read our commercial CCTV Solihull guide for more information on choosing the right security system for your premises.

What Is an NVR?

An NVR (Network Video Recorder) is the main recording device used in modern IP CCTV systems. It's responsible for recording footage, storing video files, managing camera feeds, and allowing playback and remote access. The amount of footage the system can keep depends mainly on the size of the hard drives inside the NVR. Most Hikvision commercial systems use 2TB, 4TB, 6TB, 8TB or 10TB+ surveillance drives — generally, the larger the drive, the longer footage can be stored before older recordings are overwritten.

How Long Will CCTV Footage Stay Stored?

Most businesses want footage stored for around 14 days, 30 days, or sometimes longer for higher-security sites. How long footage lasts depends on the number of cameras, recording quality, motion settings and recording hours. As a rough example, a recent small commercial installation completed by AddTek in Solihull used a 4TB Hikvision setup which provided around 3 weeks of footage retention across the site.

What Uses the Most Storage?

Camera resolution — higher-resolution cameras create clearer footage but use more storage. Common Hikvision resolutions include 2MP, 4MP and 8MP / 4K. 4K cameras provide much more detail but fill hard drives much faster than standard 2MP cameras.

Number of cameras — the more cameras connected, the more storage is needed. A small 4-camera office setup uses far less space than a warehouse with 16 or more cameras recording continuously.

Continuous vs motion recording — continuous recording (24/7) is usually recommended for warehouses, yards and higher-security sites, but uses much more space. Motion detection recording (only when movement is detected) works well for offices and quieter premises, and can massively extend how long footage is stored.

What Hard Drives Should Be Used?

Commercial CCTV systems should always use surveillance-grade hard drives. Normal desktop drives are not designed for 24/7 recording or constant read/write usage. The most common drives used in Hikvision systems are WD Purple and Seagate SkyHawk, which are built specifically for CCTV systems.

What Happens When the Storage Fills Up?

Most Hikvision NVRs automatically overwrite the oldest footage first — the system keeps recording, no manual deleting is needed, and older footage is replaced automatically. The issue comes when storage is too small and footage only lasts a few days before being overwritten.

If you are comparing different camera brands for your business, read our guide on Hikvision commercial CCTV systems to understand why they remain one of the most popular choices for businesses in Solihull.

Typical Storage Guide for Commercial CCTV Systems

Number of Cameras — Typical Storage Size

4 Cameras — 2TB–4TB

8 Cameras — 4TB–6TB

16 Cameras — 8TB–12TB

These figures can vary depending on image quality, recording settings, motion detection and retention period.

Commercial Hikvision CCTV Installations in Solihull

AddTek installs commercial Hikvision CCTV systems across Solihull for offices, retail units, gyms, warehouses, industrial premises and commercial properties. We help businesses choose the right NVR, suitable storage capacity, camera layouts, remote viewing setup and future upgrade options. Every system is designed around the individual site rather than using a one-size-fits-all setup.

Frequently Asked Questions

How long will a 4TB Hikvision NVR record for?

A 4TB Hikvision NVR will normally store between 2–4 weeks of footage for a small commercial CCTV system depending on the number of cameras and recording settings.

Is motion recording better than continuous recording?

Motion recording helps reduce storage usage and can significantly increase recording time, while continuous recording provides constant coverage for higher-security sites.

Can Hikvision NVR storage be upgraded later?

Yes. Most Hikvision systems can be upgraded with larger surveillance hard drives if additional storage is needed later on.

What is the best hard drive for a Hikvision CCTV system?

WD Purple and Seagate SkyHawk drives are among the most commonly used options because they are specifically designed for 24/7 CCTV recording.