Configuring Purge Options

The Admin Console enables you to configure the following purge options:

Exhaustive purge - Locate all deleted messages that can be purged and purge them. (A deleted message is a message that is no longer referenced from any user or shared folder.)
Customized purge - Perform daily computations to determine if the amount of deleted messages on a given day exceeds a percentage threshold and if the amount of disk space recovered if a purge is performed exceeds a size threshold.

Purging a message store supporting 20,000 users could take hours, so for some systems it may be preferable to choose Customized Purge rather than an Exhaustive Purge since fewer purges may be required. User's can still send and receive mail during a purge, but the system cannot delete or expunge messages until after the purge is completed.


Customized Purge

You can customize a policy whereby the purging of unreferenced or deleted messages from the Sun Message Store is performed on an as-specified basis rather than on a daily basis. The customized purge option enables you to set two thresholds: percentage and size.

Percentage is defined as the fraction of deleted messages of the total volume of messages handled by the Sun Message Store on a particular day. Size is defined as the total amount of disk space in kilobytes that can be recovered after deleted messages are purged. The system computes percentages and sizes that are compared against these thresholds daily.

For example, imagine that you have set the percentage threshold to 50 percent and the size threshold to 100 KB. Imagine that on the first day after a purge is performed (day 1), the system examines the total volume of messages handled by the Sun Message Store and the total volume of deleted messages. The system computes the percentage of deleted messages based on the total volume of messages. If the percentage of deleted messages is 51 percent or higher, then day 1 is purged. If the percentage of deleted messages is 50 percent or lower, then day 1 is not purged. Additionally, if he size of deleted messages exceeds 100 KB, then a purge is also performed.


 

To Configure Purge Options



AdminConsole>Sun Message Store>Purge Options  

  1. Click on the Sun Message Store icon in the home page.
  2. Click on Purge Options in the Section List.

The Purge Options section appears as shown in FIGURE 5-7.

FIGURE  5-7 Purge Options Section

  3. If you want to enable the exhaustive purge option, click the associated check box.
  4. If you want to enable the customized purge option, click on the up or down arrow keys to specify the percentage and size thresholds.
  The default percentage threshold is 1 percent, and the default size threshold is
100 KB.
  5. Click the Apply button.

 

To Configure the Purge Schedule

For information on Sun Message Store maintenance, including purge, refer to "Sun Message Store Maintenance" on page 233.

No default purge schedule exists. Therefore, if you want to purge or permanently remove messages that no longer have references from any folder on a regularly scheduled basis, you must set a schedule.



AdminConsole>Sun Message Store>Schedule For Purging Deleted Messages  

  1. Click the Sun Message Store icon to access the Sun Message Store property book.
  2. Click Schedule For Purging Deleted Messages in the Sections list.
  The Schedule For Purging Deleted Messages section appears, as shown in FIGURE 5-8.

FIGURE  5-8 Schedule For Purging Deleted Messages Section

  3. Activate purge schedule.
  4. Configure the purge schedule.
  Specify days and times at which you want purge to occur.
  5. If you want purge to occur at regularly scheduled intervals throughout the days specified in 4, to specify the interval at which the purge should occur.
  6. Click the Apply button.


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