500GB - 3.5" SATA Hard Drives - Ideal for 24/7 continuous recording

A 500GB 3.5" SATA hard drive for use inside a compatible CCTV DVR or NVR. It stores your recorded footage on disk — no drive, no recordings.

The drive comes already fitted whenever you order it alongside any CCTV kit or package, so it's worth adding at the same time rather than sourcing separately later.

What it's for

Two common uses:

• Replacing a failed or worn-out drive in an existing recorder
• Adding storage to a recorder that was supplied without a hard drive fitted

What decides how many days it holds

500GB is a fixed capacity, but the recording days you get from it varies with:

1. Number of cameras connected
2. Video resolution and frame rate per channel
3. Compression settings
4. Recording schedule — continuous 24/7 versus motion-triggered only

Motion-triggered recording only writes to disk when something moves, so it stretches the same 500GB further than round-the-clock continuous capture would.

Before you order

Check your recorder's documentation for its supported drive interface (this is a SATA drive) and its physical size requirement (this drive is 3.5"), since not every DVR/NVR bay accepts the same interface or form factor.