If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.
There are 20667 savesets that have not yet been backed up or replicated for Vault Store 'Vaultstore1'. There is a build-up of savesets that Enterprise Vault cannot confirm have been backed up or replicated. Example symptoms: archive-pending items remain in mailboxes, leading to calls to your Help Desk from users; store sizes do not decrease, even though items have been archived. There may be a problem with backups or replication.