Grass Valley iTX System v.2.6 - Manual (Page 347)

Using Missing Materials Manager
• Work with specified Media Watchers.
• Select schedules that are stored in the System Database and search them for events
with missing media files.
Under the Filtering tab, you:
• Specify the types of media file (video clip, logo, etc.) that Missing Materials Manager is
to work with.
• Set the lengths of the active periods for two Missing Materials Manager processes:
look ahead and cache ahead.
Under the Channels tab, you:
• Set up Missing Materials Manager to check schedules in all channels in an iTX system
or just channels you select.
Under the Reporting tab, you:
• Set up Missing Materials Manager to produce reports (xml files) of missing media files.
Saving your settings
After you change any settings, you need to click Save and restart the service for them to take
effect.
Automatic deletion of media files to clear disk space
By using the Media Watchers it is configured to work with, Missing Materials Manager can
manage the usage of disk space on the Media Stores that are controlled by these Media
Watchers.
When it does this, it aims to keep the amount of used space on each Media Store between two
levels: an upper level called a "high water mark"; and a lower level called a "low water mark". It
starts deleting unwanted files to make room for new ones when the store is filled to the high
water mark; it stops deleting files when disk usage falls to the low water mark. We call the
process auto-purging.
In selecting what files to delete, Missing Materials Manager reads a PinPoint results list; the list
contains files that meet deletion criteria that you specify. Missing Materials Manager does not
delete any media files for events that fall within its look-ahead time (see later in this section,
"Look-ahead time") or any unfinished events in schedules running in playout channels.
When Missing Materials Manager deletes a media file from a Media Store, it may also delete
the file record from the database. Whether it does so or not depends on a configuration option
you select and may affect copies of the same media file on other Media Stores:
• If you select the Purge Media only option, Missing Materials Manager does not delete
the file record; copies of the media file on other Media Stores are not deleted.
• If you select the Purge clip (and media) option, Missing Materials Manager deletes the
file record; as a result, all copies of the media file on other Media Stores are also
deleted. You should not select this option if you are running multiple instances of
Media Manager; otherwise the service might delete media that other playout channels
require.
You configure Missing Materials Manager to manage disk usage in the Auto-Purge Settings
panel, which appears under the Engineering, General tab.
March 2015 System Administrator Guide Page 347 of 404