surveillanceinterpretation

Surveillance questions, surveillance answers, and market updates

What is a hard drive?

What is Hard Drive?

A Qnap VioStor and the SATA hard drives exposed

A hard drive is best described as the storage container of your computer.  The hard drive contains a read-write mechanism that stores all your files and programs.  All of this data is stored on hard disks.  For this reason, the full name of hard drive is hard disk drive, or HDD, which is the abbreviation you might see more often when looking at network video recorders (NVRs).

Consider an external hard drive: when you plug the external hard drive into your computer, it basically becomes a physical folder for all your data.  You can transfer large data files such as videos and photos onto the external hard drive to free up space on your computer.  Hard drives inside your computer (internal hard drives) are the exact same concept: they have been the storage space for all those files and programs.

So what is ‘hard drive’ when it comes to surveillance?  When looking for hard (disk) drives for devices such as a network video recorder, consider the amount of video footage you intend to keep on it. Remember, hard drives hold information and everything has a max capacity.  How many cameras do you have?  What are you compressing the data stream at?  How long do you want to keep the footage: 2 weeks? A month?  Ask yourself these things and purchase accordingly.  A good rule of thumb is to overestimate rather than underestimate; there is nothing worse than losing footage due to a full hard disk.  Most NVRs can support up to several 1TB, 2TB, or 3TB SATA hard drives, but that is something to double check on the manufacturer’s Data Sheet.

For more information regarding hard disks or if you have any further questions, leave a comment for me!  You can also call my colleague Tom at 1-866-582-9804 and he’d be happy to help you create a system for  your surveillance needs!

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This entry was posted on October 17, 2012 by in Interpretation and tagged , , .
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