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“How long will a DVR record for?”  The most popular question posed to us so happens to be the one we simply cannot answer. Unlike analog VCRs that offer a finite maximum recording time, DVRs offer a virtually infinite combination of custom settings involving recording fps, quality, size, and scheduling that are set by the end user. Considering the scalable nature of DVRs, we find that the better response to this question is, “how long do you need it to record for” in effort to identify the proper amount of storage space required.  The greater the required recording time, the greater the hard drive capacity.

Unless a limitless budget is at hand, the key, as with most all things regarding security, is being practical. Although a super fast recording frame rate may sound like a good idea, rarely is it truly practical considering the vast amount of storage required to support it. Secondly, we also recommend that you greatly consider only recording when motion is detected, as motion detection will decrease the amount of required hard drive space while making search and playback of a particular event faster and easier to find. Unlike VCRs that required around 5~7 seconds for the tape to engage the recording head when motion was detected, DVRs begin to record instantly once motion is detected. Some DVRs, such as the PC-Witness Pro, even feature smart recording technology that records time-lapse video at 1fps until motion is detected when it then automatically increases to full frame rate until the motion ends.

Once your particular needs are understood, your DVR vendor should be able to assist you with calculating the approximate amount of hard drive space that will be required to accommodate your desired maximum recording time. While speaking to a sales representative, be sure to ask how many HD drive bays remain for future upgrades, and if this will void your warranty. Availability for future upgrades will be especially helpful in the future, as HD prices are ever decreasing as the data storage capacities are increasing. By doubling usable HD space, you will in essence be doubling your maximum recording time.

We encourage you to give us the opportunity to assist in locating the best CCTV system for your surveillance application. Please call us or contact us on line for free assistance.

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