Canon VB-R13 매뉴얼

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For example, if the value for [Maximum Disk Space Used] is 100 GB and the value for [Low Disk Space Warning 

Level] is 10%, the Storage Server reaches the low remaining disk space notification level when the Storage Server 

disk space usage becomes 90 GB or more.

Condition 2: If the free disk space falls below the following values:

Disk space x A/100

(A: Value specified in [Low Disk Space Warning Level]) 

For example, if the disk space is 80 GB and the value for [Low Disk Space Warning Level] is 10%, the Storage Server 

reaches the low remaining disk space notification level when the remaining free disk space becomes 8 GB or less.

Note

If other applications use the same hard disk, you need to consider condition 2. Even if the Storage Server uses a small amount of 
disk space, it may reach the low remaining disk space notification level according to condition 2 because other applications have 
consumed a portion of the disk space.

Calculation Example



Action When the Threshold Level is Reached

Recording continues, however, the Storage Server starts deleting recording files, beginning with old files, and issues 

an event.

Note

• Recording files are deleted, even if they have not reached the [Maximum Storage Period]. However, if the oldest file is currently in 

use by the Viewer (for example, for playback of recorded video), it will not be deleted and the next oldest file will be deleted 
instead. Deletion continues sequentially until the free disk space meets or exceeds the threshold again. For details on saving 
files, please refer to Chapter 8.

• Normally, a recording file for which the minimum storage period has not elapsed is excluded from deletion. Note that such files 

are also deleted if the free disk space cannot meet and exceed the threshold value by deleting all the other files.

Threshold Level Conditions and Calculation Method

The threshold level is considered reached when the amount of free disk space drops below the following level.

(Number of cameras + 1) x 64 MB

Disk Drive

D Drive

E Drive

Disk Space

100 GB

200 GB

Free Disk Space

50 GB

200 GB

Value for [Maximum 
Disk Space Used]

40 GB

200 GB

Value for Low 
Remaining Disk Space 
Notification Level

Condition 1:
40 GB x (100-10)/100 = 36 GB used

Condition 1:
200 GB x (100-10)/100 = 180 GB used

Condition 2:
100 GB x 10/100 = 10 GB remaining

Condition 2:
200 GB x 10/100 = 20 GB remaining

Low disk space
<drive letter>
drive file
delete: Begin

Remove from 
the oldest

Notification

Threshold level