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What Is the Right Hard Drive Size for Your CCTV System?

Not all CCTV DVR systems come with a hard-drive. If you have CCTV DVR system without hard drive or if you are planning to acquire a new CCTV DVR without a hard drive and you will like to install it later, then you should consider number factors. One of the factors to consider will be the size your hard drive that is required. The HDD is where you will record most surveillance footage, and if you require to record and store a lot of surveillance footage, then you should install a large HDD.

Usually, if you have a four camera system you will have to use a hard drive of 500 GB capacity which, will support recording of up to 2 weeks at about 12 FPS. when you have an eight-channel DVR you should install 1 TB HDD which will support up to two weeks recording also at 12 FPS across all the eight channels. The specification of DVR is also another factor that you should checked with the DVR supplier; this will help you to understand whether the DVR requires a 2.5" or 3.5" harddrive and which of the serial ATA and parallel ATA storage is compatible with your system. On top of that you also have to consider the resolutions for the individual cameras. The higher the resolution the more harddrive capacity you need. If you want to save money on buying a hardrive you should consider at how many frames per second you want the camera image to be recorded. If you only capture 1 frame per second which is totally sufficient for most customers then a 500 GB hard drive is normally enough.

Once the purchase of the HDD storage is made with the utmost care and diligence, and you need to install it in the recorder, you should have in your mind that harddrive should be handled with protection Electrostatic Discharge. Your HDD storage should also be neither very cold, very hot, nor humid. Hard drive is made up of very precious delicate mechanics, therefore you should handle it well to ensure that it does not drop. You also ensure that you not stack them. Dropping or stacking the harddrive may cause a destruction.

Sometime you may find that the HDD you have install have smaller memory capacity than advertised. This is common since the actual capacity may var from the advertised capacity because of the formatting and partitioning and due to different operating system.


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