System Design; Determining The Capacity Of The Storage Server - Canon VB-M40 Administrator's Manual

System Design

Determining the Capacity of the Storage Server

You must determine the size and configuration of your Storage Server based on the recording and playback data volume
per second and the required hard disk capacity.
Important
The operating performance of this software varies depending on factors such as the usage conditions and the hardware specifications of
the Storage Server. Use the figures below only for reference.
Recording / playback data volume per second and the audio data volume
If the volume of recording or playback data handled by one server is 80 Mbps or greater, to ensure system stability you
should review your recording requirements.
Audio data requires 64 Kbps of disk space, regardless of the type of camera.
Important
Depending on the hard disk and/or RAID card on your server, the disk write performance may be lower than the above estimates.
Hint
See "System Information" (P. 7-3) for details on the recording/playback data volume during operation.
Hard disk capacity requirements
The size of the recording file varies depending on how the camera is configured (the settings for image quality and size)
and the complexity of actual image.
Follow these steps to determine the required hard disk capacity.
Decide on the required number of cameras and the image size for recording.
1
2 Decide on the image quality for each camera.
The higher the image quality setting the higher the image quality, resulting in a correspondingly higher data volume.
Decide on the frame rate required for recording.
3
For general security purposes, you can use 1 to 2 fps. Higher frame rates require more hard disk space.
Decide on the number of hours per day to record and the number of days to store the recorded data.
4
After deciding on the above parameters calculate the required hard disk capacity based on the recording file size (in KB).
5
If you will also record audio, be sure to calculate the additional amount of hard disk space required for the audio.
6
We recommend that you add 10 to 20% more space to the calculated hard disk capacity.
Sample calculations for each video format are shown below, assuming 1000 Kbps = 1 Mbps for the network bandwidth,
and 1024 KB = 1 MB for the disk capacity.
1
1
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