Limit Level Calculation Method; Calculation Example For Each Level - Canon VB-C300 Administrator's Manual

Important: Disk Space Management

Limit Level Calculation Method

The Limit Level occurs when the Storage Server fulfills the condition 1. or 2. below.
1. When the Storage Server disk space used exceeds the following value:
[Maximum disk space used]
2. A When free disk space falls below the following value:
(Number of Camera Servers + 1) x 32MB

Calculation Example for Each Level

Disk Drive Disk Capacity
C Drive
D Drive
The following is a table of values for each level calculated based on the examples above.
Disk Drive Low Disk Warning Level
1. 40GB x (100-10) / 100=36GB
C Drive
2. 100GB x 10 / 100=10GB
1. 200GB x (100-10) / 100=180GB
D Drive
2. 200GB x 10 / 100=20GB
Note
Threshold Level can be used as a protective level to avoid achieving Limit Level. It is recommended that
you take measures when [Low disk space warning level] event notification is generated, such as deleting
unnecessary video files.
Storing video data above the Threshold Level increases load over the Storage Server and may cause
recording interruption.
It is strongly recommended to use the Storage Server below the Threshold Level.
See "Operation Guideline for Recording and Viewing" (
If e-mail notification for each levels is selected, the system can be configured to provide e-mail
notifications when one of these levels is reached (
The requirements of Threshold Level may be achieved before the requirements of [Low disk space
warning level] are satisfied, depending on circumstances. For example, large numbers of cameras with
limited disk capacity may bring a larger value for (Numbers of camera +1) x 32 MB + 96 MB, compared
with the value of Disk capacity x [Low disk space warning level]/100.
3-20
Free Disk Space
100GB 50GB
200GB 200GB
1. 40GB-96MB=39.904GB
2. (19+1) x 32MB+96MB=736MB
1. 200GB-96MB=199.904GB
2. (19+1) x 32MB+96MB=736MB
Max. Disk Space Used
40GB
200GB
Threshold Level
P. 6-5) for detailed of operation.
P. 3-23).
Camera Server No.
19 units
19 units
Limit Level
1. 40GB
2. (19+1) x 32MB=640MB
1. 200GB
2. (19+1) x 32MB=640MB