Updated on 23rd Oct'12

Hi,

Shared Insight Cache (SIC) is a server application which caches known clean files in order to optimize scan performances.SIC server is mainly designed for virtual environment but usage on physical system is supported given that network latency is kept at an absolute low.SIC server keeps a record in memory (ram) of files which are voted clean by system performing scans 

First SEP client needs to scan a file.  Queries SIC and finds no record.  SEP scans the file and sends the results to the SIC.

Subsequent SEP clients need to scan the same file.  They query the cache server and find the file has already been scanned with the same version of defs and the file is clean.  SEP client skips scanning the file.

When a second client run the scan it goes though the same process and since the file is cached on the SIC therefore will skip the scan. 

Shared Insight Cache is only available for the clients that perform scheduled scans and manual scans. 

Shared Insight Cache runs independently of Symantec Endpoint Protection. However, you must configure Symantec Endpoint Protection Manager to specify the location of Shared Insight Cache so that your clients can communicate with Shared Insight Cache. No special license is required to install or run Shared Insight Cache.

Symantec Endpoint Protection Shared Insight Cache User Guide 12.1

http://www.symantec.com/docs/DOC4334

Shared Insight Cache - Best Practices and Sizing guide

http://www.symantec.com/business/support/index?page=content&id=TECH174123

Installation and Configuration of SEP Shared Insight Cache

http://www.symantec.com/docs/TECH185897

Viewing Shared Insight Cache events in the Cache Server log

http://www.symantec.com/docs/HOWTO55316

How Shared Insight Cache works

http://www.symantec.com/docs/HOWTO55318

About the Symantec Endpoint Protection Shared Insight Cache tool

http://www.symantec.com/docs/HOWTO55311

Customizing Shared Insight Cache settings

http://www.symantec.com/docs/HOWTO55314