In Enterprise Vault Administration Console you create mailbox archiving policies under Policies > Exchange > Mailbox.
An Exchange mailbox policy supplies information for the archiving task to use when processing the target mailboxes, including the following:
The archiving strategy. You can base the archiving strategy for an Exchange mailbox policy on one of the following:
Age: items are archived when they have not been modified for the time that you specify.
Quota: archiving keeps a percentage of each user's Exchange mailbox storage limit free.
Age and quota: Enterprise Vault performs age-based archiving first. If age-based archiving does not make the required percentage of mailbox storage limit free, quota-based archiving continues until the required percentage is reached.
Archiving actions, such as deleting the original item or creating shortcuts after archiving an item.
Whether items are archived from Exchange managed folders, and whether Enterprise Vault uses retention settings that are based on Exchange managed content settings.
The types of items (Message Classes) that are archived. (You can set the default list of Message Classes in the Directory properties in the Administration Console.)
You can lock policy settings to prevent users from being able to change them in their Outlook client. This can be done from the Archiving Actions tab of the mailbox policy properties.