Milestone XProtect Enterprise 2014 - Manual (Page 65)

Milestone XProtect ® Enterprise
2014
Administrator's Manual
www.milestonesys.com 65 Advanced configuration
About database resizing
In case recordings for a camera get bigger than expected, or the available drive space is suddenly
reduced in another way, an advanced database resizing procedure automatically takes place:

If archives (see "About archiving" on page 126) are present on the same drive as the camera's
database, the oldest archive for all cameras archived on that drive is moved to another drive
(moving archives is only possible if you use dynamic archiving (see "Dynamic path selection
(properties)" on page 73), with which you can archive to several different drives) or
—if moving
is not possible —deleted.

If no archives are present on the drive containing the camera's database, the size of all
camera databases on the drive is reduced by deleting a percentage of their oldest recordings,
temporarily limiting the size of all databases.
When the Recording Server service (see "About services" on page 169) is restarted upon such
database resizing, the original database sizes are used. Therefore, you should make sure to solve the
drive size problem. Should the database resizing procedure take place, you are informed on-screen in
XProtect Smart Client, in log files, and, if set up, through notifications.
About motion detection
Motion detection settings are linked to the Recording properties settings for the camera under which
you can enable and configure motion detection for the selected camera. Motion detection configuration
is a key element in your system: your motion detection configuration determines when the system
generates motion events and typically also when video is recorded.
Motion detection is enabled as default. Disabling it improves the CPU and RAM performance of your
system, but can also affect your motion detection, event and alarm management.
Time spent on finding the best possible motion detection configuration for each camera helps you
avoid unnecessary recordings. Depending on the physical location of the camera, it may be a good
idea to test motion detection settings under different physical conditions such as day/night and
windy/calm weather.
Before you configure motion detection for a camera, Milestone recommends that you have configured
the camera's image quality settings, for example resolution, video codec and stream settings. If you
later change image quality settings, you should always test any motion detection configuration
afterwards.
In the following two tables, you can see the differences between enabling (table 1) and disabling (table
2) built-in motion detection for a camera.
Enabled motion detection
Recording properties
setting
Recordings
Motion-based
events Non-motion
based events
Sequences
Always Yes Yes Yes Yes
Never No Yes Yes No
Built-in Motion
Detection
Yes Yes Yes Yes