Within the Administration Console, Enterprise Vault configuration of archiving is, broadly speaking, broken down into the following:
Tasks - A task is a job of archiving work that Enterprise Vault is to perform. For example, archiving from mailboxes on a particular Exchange Server computer.
Policies - A policy specifies how the task is to be carried out. For example, when archiving from a mailbox the policy specifies the age at which items are to be archived and whether to create shortcuts to items that are archived.
Targets - A target is the object on which a task acts. For example, depending on the type of task the target could be a Domino mail file, a disk volume, or an Exchange Server public folder.
Additionally, there are settings that affect the general behavior of Enterprise Vault and all tasks. These settings are editable in the Enterprise Vault Directory and site properties.