OfficeScan 10 Administrator's Guide - Online Help Home - Trend Micro

Trend Micro OfficeScan 10 Service Pack 1 Administrator’s Guide
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2. The server merges the incremental pattern with its current full pattern to generate
the latest full pattern.
To illustrate based on the example:
• On the server, OfficeScan merges version 171 with incremental pattern
171.175 to generate version 175.
• The server has 1 incremental pattern (171.175) and the latest full pattern
(version 175).
3. The server generates incremental patterns based on the other full patterns available
on the server. If the server does not generate these incremental patterns, clients that
missed downloading earlier incremental patterns automatically download the full
pattern file, which will consequently generate more network traffic.
To illustrate based on the example:
• Because the server has pattern versions 169, 167, 165, 163, 161, 159, it can
generate the following incremental patterns:
169.175 167.175 165.175 163.175 161.175 159.175
• The server does not need to use version 171 because it already has the
incremental pattern 171.175.
• The server now has 7 incremental patterns:
171.175 169.175 167.175 165.175 163.175 161.175 159.175
• The server keeps the last 7 full pattern versions (versions 175, 171, 169, 167,
165, 163, 161). It removes any older version (version 159).
4. The server compares its current incremental patterns with the incremental patterns
available on the ActiveUpdate server. The server downloads the incremental
patterns it does not have.