Harris ADC 100, Руководство пользователя

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Harris ADC Device Server User’s Guide
3-8 Video Disk Configuration
Storage Tab
Storage and Disk Space
Automatically Delete From Disk When Full . The automation system ensures that the
specified amount of free disk space is maintained. Material is deleted from the disk
automatically, based on a first-entered, last-played formula.
Example :
A disk has 1000 spots on it, numbered 1 through 1000. Spot 23 is played, at which point it
is assigned a new number of 1001. Spot 65 is then played, at which point it is assigned a
new number of 1002. Each time a spot is played, it is incremented using this same
sequence. As a result, spots that have been on the disk the longest without ever being
played have the lowest numbers, and are deleted first. If material must be deleted on the
disk, the lowest number would be deleted first, then the second lowest number, then the
third lowest, etc. Default is disabled (unchecked).
Spots that are registered in the Lookahead are also never automatically deleted.
Disk Space to Keep Free (Mins) . The default is 10 minutes. The range is from 0 to 32,000
minutes. This parameter attempts to keep the disk with at least the entered number of
minutes of disk space free. This prevents trying to record something larger than the
available amount of time, then having to delete the unfinished (truncated) item. For
playout, the default value is typically used. Set this to the size of the largest ID you
expect to record if
Automatically Delete From Disk When Full is enabled. This parameter
should be used in time delay and record event applications. It is not recommended to
set the value below four minutes (since all space available numbers are estimates due
to variable rates of compression on different video images). This parameter has no
effect unless
Automatically Delete From Disk When Full is enabled.