Specifications

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Cisco TV CDS 2.5 ISA Software Configuration Guide
OL-24788-01
Chapter 4 Configuring the CDS
Array Level Configuration
Step 3 Choose the preference setting for each Cache Group and Stream Group. The possible preferences are:
• High—First preference as a source for cache-fill requests.
• Medium—Second preference as a source for cache-fill requests.
• Low—Lowest preference as a source for cache-fill requests.
• None—Do not use this Cache Group or Stream Group as a cache-fill source.
Groups with the same preference level are considered equally as a cache-fill source. At least one Cache
Group must have a preference higher than None.
Step 4 Click Submit.
To reset the field, click Reset.
Note The Stream to Cache Map page is associated with the configuration file FillSourceConfig in /arroyo/test
directory. After submitting the Stream to Cache Map page, the FillSourceConfig file is updated.
To view the cache-fill source mapping of a Stream Group, choose the Stream Group from the drop-down
list and click Display.
To delete a Stream Group, Cache Group, or Vault Group, see the “Configuring Stream Groups” section
on page 4-58, the “Configuring Cache Groups” section on page 4-65, or the “Configuring Vault Groups”
section on page 4-61. When a Stream Group is deleted, the mapping for the Stream Group is also deleted.
When a Cache Group is deleted, the Cache Group is removed from each Stream Group mapping, and any
mapping for that Cache Group in the Vault To Cache Map page is also deleted. When a Vault Group is
deleted, the Vault Group is removed from each Stream Group mapping, and any mapping for the Vault
Group in the Vault Redundancy Map page is also deleted.
Mapping Vault Groups for Redundancy
The Vault Redundancy Map page is used to map Vault Groups to each other. Before you can map Vault
Groups for redundancy, you must create them. See the “Configuring Vault Groups” section on page 4-61
for more information.
Note The Vault Redundancy Map page is part of the Vault Groups feature and is displayed only if Vault Groups
is enabled. If VVI is enabled, the Vault Redundancy Map page is displayed only on the VVIM. For more
information, see the “CDSM or VVIM Setup” section on page F-3.
Note The maximum number of Vault Groups is 20.
Vault Groups interact with other Vault Groups by passing cache-fill requests among each other based on
performance qualification and cost considerations. If a Vault Group must give up a cache-fill task to
another group, Vault Group preferences set on the Vault Redundancy Map page are followed. For more
information on Vault Group redundancy, see the “Vault Group Redundancy” section on page 1-16.
To map a Vault Group to another Vault Group, do the following: