Installation and User Manual ADPRO FastTrace by Xtralis
92 Doc 11168_12
Data Storage
Define the quantity of days that Normal (images recorded routinely) and Event (images relating
to alarms on the system) are to be stored. After this time images will be deleted by a data
deletion operation, which runs regularly within the system. Note that information cannot be
deleted from the FastTrace system manually by any means.
Note: Event value must always be at least one day more than the value set for Normal.
Normal (Recording Retention Time)
Range: 1 to 999
Default: 30 days
The Normal Recording Retention Time sets the maximum number of days that the FastTrace will
attempt to store images in its database. When an image is recorded, the database field is tagged
with a retention time value and this value is checked regularly by the unit’s database
management software. When the field is found to be expired, the disk space will be reallocated
for storage of new images.
Caution: Depending on the configuration of the system and the current recording rate at any
one time, images may be deleted (over-written) prior to the specified Normal
retention time, due to the hard disks becoming full.
Event (Recording Retention Time)
Range: 1 day more than the Normal Retention time (mentioned above) up to 1000
Default: 60 days
Event Recording Retention Time sets the maximum number of days that the FastTrace will
attempt to store images that have been recorded as a result of an (alarm) event. Once the Event
time has expired, the disk space will be reallocated for new images.
Note: Depending on the configuration of the system and the current recording rate at any
one time, images may be deleted (over-written) prior to the specified Event
retention time, due to the hard disks becoming full.
Camera Recording Information
An indication of how many days of recording is currently available is also provided. This figure is
calculated based on a range of variables including:
• Overall hard-disk capacity available.
• Quantity / rate of images being recorded (as defined in Camera Behaviour on page 97).
• Quality of the images being recorded (high quality image files are much larger than low
quality image files).
Warning: This is for indication only and will be subject to change based on
various conditions such as:
• Large amounts of scene change in a camera’s field of view (including the use of PTZ
cameras).
• High quantities of events and event data being stored.
• Dark, noisy images which can generate large files.
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