An external hard drive can back up exported security clips, but it is not always suitable as the primary recorder. A home camera system may require a surveillance-rated internal drive, supported NVR storage or local memory. Retention, write pattern and compatibility should decide the storage design.

Calculate footage volume

The Seagate SkyHawk 2TB surveillance drive is verified at R1,340 and is designed for continuous camera writes in compatible systems. The Seagate Expansion 4TB external drive costs R2,057 and may suit exported archives, but buyers must not assume an NVR supports it. Check camera count, resolution, frame rate and retention.

Separate recording and evidence copies

Use supported primary storage and test playback after several days. Export important clips to another device, record the date and preserve access controls. Disconnect the archive drive whenever an authorised user does not need to access it. Restrict footage accounts, enable strong authentication and place cameras with household consent. Follow POPIA duties where stored footage includes identifiable people.

A single drive remains one failure point. Maintain another copy of critical evidence and test recovery before an incident. Replace disks that show health warnings or recorder errors.

Export one security clip and open it on another computer before relying on the chosen retention and archive process.

Note the NVR clock offset so exported clips retain a trustworthy incident timeline.

TIP

Pro Tip ⚡

Planning security storage? > Ask Evetech to match surveillance drives and archive capacity to camera count and retention.