Enterprise Vault supports gradual migration from SharePoint 2003 to SharePoint 2007.
When installing Enterprise Vault in an environment that is being gradually upgraded to SharePoint 2007, and you want sites to be archived while they are pending migration, do the following:
The following information provides an overview of the steps.
To install and configure Enterprise Vault with SharePoint 2003
Install the Enterprise Vault SharePoint components on the SharePoint server.
Run the Enterprise Vault configuration tool on the SharePoint server.
Run the Enterprise Vault Administration Console on the Enterprise Vault server and configure SharePoint sites for archiving.
Return to the SharePoint Server and install the Enterprise Vault Web Parts and the Archive Version History link.
To upgrade SharePoint Server to SharePoint Server 2007
Repeat the installation of the Enterprise Vault SharePoint components on the SharePoint server.
Install the Enterprise Vault Web Parts and the Archive Version History link again.
Ensure that the account that the SharePoint task runs under is a Site Collection Administrator on the target SharePoint site collections.