Digital Video Recorders (DVR’s) Compared to Video Cassette Recorders (VCRs)…

A DVR is basically computer (PC) running software designed to receive either an analog or digital signal from a camera. This data is recorded to a hard drive(s) for storage and possible future retrieval.

When changing from a VCR to a DVR, the archiving of information is constantly and automatically being recorded to a hard drive verses onto a tape, which must be changed. With a DVR you never have to physically change anything for the data to be continually recorded. Once the hard drive is full, on a DVR, it will automatically start recording over the oldest data. The larger the hard drive, the more recorded data you get.

This presents a new challenge when a DVR experiences a failure, as all recorded data can be lost. Since the hard drives are the hardest working piece of the puzzle, it is also the weakest link and typically results in 100% of the data being lost. In a hard drive crash, some or all the data can possibly be recovered, but this could be a very expensive endeavor. If a DVR has to be sent back to the factory for any other component failure everything is typically wiped clean to assure all hardware and firmware upgrades are the most current available. The secret is to think all this through and know all your backup options prior to the need arising.

While a repaired unit is out and IF a loaner DVR is put in its place, remember all your data will walk out the door when this unit is replaced with the repaired unit.

Since DVRs have no tapes needing to be changed and can basically be installed and forgotten, it is imperative you do NOT let this happen (forget about your DVR). If it is not periodically checked to assure it is operating correctly, it is possible when you need the stored video, it might not be there when you need it the most!

You, as the DVR owner, should:

1) Check the unit periodically to make sure it is recording properly by playing back recorded video.

2) Look at live video to make sure all cameras are presently working.

3) Check the unit (daily) to make sure the time and date are correct.

4) Make sure the video you are recording is adequate at all times of the day. It is possible for the sun shining into a camera to affect the recorded video, which also changes with the seasons. If this was not the case when the system was initially programmed it is possible this camera may, at some time, not be recording necessary video.

5) Check motion settings to be sure the sensitivity settings are correct and the proper areas are masked off.

6) Make sure the span of time being recorded is adequate. Remember that once old data is recorded over, it is gone for good.

7) Simulate a robbery and act as the FBI would to make sure you know how to get recorded video off your DVR. If you do not know how to do this and the authorities can’t get this information when needed, it is possible your DVR could be taken as evidence.

8) Know where your operating manual is.

9) If you utilize any type of back up, make sure it is working by checking it periodically.

10) If you utilize a UPS (uninterrupted power supply) check that it is working properly and has enough reserve power to do what is was designed to do.

As always if you have any other questions, or need help with any of your security equipment, please call or Email for help.