Canon VK-64 - Manual (Page 226)

Examples
226
Hardware requirement
12.5 GB per day x 30 days = 375 GB Hard disk capacity of around 450 GB is required.
If the storage period of video data on the Storage Server is 30 days, and the required
archive period is 180 days, an archive backup for 1-week data can be saved on 100-GB
tape with an LTO drive (Ultrium). If you use a 400-GB LTO drive, you can save 30-day
data on a single cassette of tape.
Configuration 3: Backup for Data Archiving
Premise
5 VB-C50i
Recording condition
Frame rate is 1 fps (one frame per second), Camera Server video quality is 50, resolution
is 320x240, and the size for one image data is 15 KB.
The Maximum file size/duration option in the Storage Server Configuration window is
set to six hours.
Under this condition, the video file size per Camera Server per day is 310 MB x 4 files.
Therefore, the video data quantity per Camera Server per day is 1.25 GB and 6.25 GB for
five Camera Servers.
Hardware requirement
6.25 GB per day x 30 days = 190 GB Hard disk capacity of around 240 GB is required.
If the storage period of video data on the Storage Server is 30 days, and the required
archive period is 180 days, an archive backup for 1-week data can be saved on 50-GB
tape with an AIT drive. If you use a 100-GB LTO drive, you can save 1-week backup data.
However, if the tape capacity for archive is too large, it takes too long to find desired data
to restore.