About storage estimation for Quarantine

Article:HOWTO59394  |  Created: 2011-10-04  |  Updated: 2011-10-04  |  Article URL http://www.symantec.com/docs/HOWTO59394
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About storage estimation for Quarantine

Symantec Message Filter stores copies of filtered messages in its Quarantine. Due to these filtered messages, the size of the Quarantine can become large. Many variables influence the storage that is required for quarantined messages. These variables include the message dispositions you choose to quarantine, your overall message volume, your spam percentage, and so on.

Phase your Quarantine deployment after Symantec Message Filter is operational for some time.

Figure: Suggested Quarantine deployment timeline suggests a time line.

Figure: Suggested Quarantine deployment timeline

Suggested Quarantine deployment timeline

If you do not want to delay your Quarantine deployment, first examine your current mail logs. Then make some estimates about the percentage of spam that your organization receives. Storage estimates are based on a survey of enterprise customers with average spam volume of about 50% of filtered mail.

Table: Estimated storage requirements for the Quarantine provides a baseline for estimated storage requirements for the Quarantine.

Table: Estimated storage requirements for the Quarantine

Number of users

Disk space that is required per month before the Quarantine is purged (in GB)





Configure the Quarantine thresholds to control the amount of disk space that quarantined messages use. You can also decrease the number of days before Symantec Message Filter deletes quarantined messages to reduce the required amount of disk space. However, a shorter retention period increases the chance that users may have messages deleted before they have been checked.

You should configure the Quarantine to use an LDAP server backend to delete mail for unresolved email addresses. Otherwise, sidelined dictionary-based spam can greatly increase the size of your database.

See About plan for disk space storage.

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