HDD Capacity Calculation 219
HDD Capacity Calculation
Appendix 2
In the first installation of the HDD, check whether the HDD is already installed. To install IDE
HDD, pay attention to the jumper of the HDD.
HDD capacity calculation formula:
Total capacity (M) = Channel number × Demand time length (hour) × HDD capacity occupied
per hour (M/hour)
Recording time calculation formula:
Recording time (hour) = HDD total capacity (M)
HDD capacity occupied per hour (M/hour) × Channel number
The Device adopts MPEG4/H.264 compression technology, which features a large dynamic
range. Therefore, when calculating HDD capacity, you should accord to the bit rate to evaluate
the file size generated per hour from each channel.