I had written an article a while back about archive mailbox which generated a lot of response (comments) from my readers. In this one, I will explain how to configure quotas for archive mailboxes, if anyone is using it. Do understand that an enterprise CAL is needed to use archive mailbox functionality.
Archive mailboxes have unlimited storage by default and no admin wants that. You can configure two settings, archive warning quota and archive quota.
As the name implies, the archive warning quota is a limit set by the admin to warn the user that they are very near to reaching the maximum allowed limit for their archive mailbox. When a user reaches the archive warning quota, exchange logs an event for the administrator and fires an email to the user. You can use both EMC and Shell to configure the setting. Launch EMC, take the user properties, navigate to “Mailbox Settings” tab, select “Archive Quota” and click properties. Set the limit in MB. The option “Archive Quota” in the user properties should ideally be “Archive Quota Warning” in my opinion.
If you are a Powershell guy, run Set-Mailbox –identity “user” –ArchiveWarningQuota” 900MB
Archive Quota is the limit set by the admin as the maximum amount of storage allotted for a user’s archive mailbox. When a user reaches the quota limit, a message is fired to the user and he/she won’t be able to move any more messages into the archive mailbox. This limit can only be set by using the Shell. To set the limit to 1Gb, run Set-Mailbox –identity “user” –ArchiveQuota 1GB.