Canon VB-M740E Network Video Recording Software RM Series Administrator Manual - Page 66

Action When the Threshold Level is Reached, Calculation Example

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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 Disk Drive D Drive Disk Space 100 GB Free Disk Space 50 GB Value for [Maximum Disk Space Used] 40 GB Value for Low Remaining Disk Space Notification Level Condition 1: 40 GB x (100-10)/100 = 36 GB used Condition 2: 100 GB x 10/100 = 10 GB remaining E Drive 200 GB 200 GB 200 GB Condition 1: 200 GB x (100-10)/100 = 180 GB used Condition 2: 200 GB x 10/100 = 20 GB remaining  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. Low disk space drive file delete: Begin Remove from the oldest Notification Threshold level 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 66

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66
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