- 1). Check the amount of free space available on your DVR. Click on the menu button on the remote control. Scroll down to recording settings, and access information on the hard disk space availability. Some DVRs give you the amount of hours left available, but most DVRs simply give you the amount of space available.
- 2). Write down the amounts of hard disk space available if the DVR doesn't give the amount of hours. This gives you a starting point for figuring out the total amount of available space.
- 3). Set the recording quality to low. Next, record a video or an item that you want record that's an hour long. After the recording is finished, check the amount of space available and write it down.
- 4). Subtract the first number from the second number. This gives you the total amount of gigabytes used recording one hour on the DVR. For example: 320GB - 319.36GB = 0.432GB of space used for one hour of recording.
- 5). Divide the used space time (0.432GB) into the amount of the total gigabytes the DVR can record (320GB); the result is 740GB. A 320GB DVR can record approximately 740 hours, depending on the DVR manufacturer.
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