Hard Drives – What Size?

Hard Drives – What Size?

Surveillance Grade Hard Drive for Security Camera RecordersDue to the way H.264 squeezes the security camera footage onto the available hard drive space, it’s almost impossible to accurately predict the amount of footage any hard drive will allow you to store.

However, as a rule of thumb, at the recommended resolution (1080p), recommended frame rate (6fps) and recommended normal 24/7 recording if 500GB is allowed for each camera 24 days of footage will be stored.

The table below will give you an indication of the length of time of footage stored at 6fps, 1080p:

Number of Cameras HDD Size Storage Time
4 1TB 12 days
4 2TB 24 days
4 3TB 36 days
4 4TB 48 days
4 6TB 72 days
8 1TB 6 days
8 2TB 12 days
8 3TB 18 days
8 4TB 24 days
8 6TB 36 days
16 1TB 3 days
16 2TB 6 days
16 3TB 9 days
16 4TB 12 days
16 6TB 18 days
16 8TB 24 days
16 12TB 36 days

The above table is pessimistic. If you were to reduce the frame rate from the recommended 6fps to 3fps, the Storage Time shown above would double.

It’s worth bearing in mind that nobody ever complained they had too much storage. If you’re not sure then we would strongly suggest selecting an oversized hard drive otherwise you may find you aren’t recording for as many days as you’d hope for.

Top Tip: In certain circumstances, some camera images do not need to be recorded in full 1080p high definition or a good frame rate. In this situation it can be advantageous to record one or some camera channels at a lower resolution or reduced frame rate to give a longer length of footage stored. Get in touch and an Orange Security representative will be able to advise further on this.


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