You are the messaging engineer for your company. Your company has an Exchange Server 2007 messaging system. Your company acquires a small company named Contoso.
You plan to move all the mailboxes for Contoso users to Exchange Server 2007 Mailbox servers. The Service Level Agreement for Contoso states that mailboxes do not require backing up and restoring.
You need to design a solution that reduces the amount of disk space used to host the Contoso mailboxes.
What solution should you choose?

A.
Create a new mailbox database in the First Storage Group. Move all new mailboxes to the new mailbox
database.

B.
Create a new mailbox database in a new storage group. Enable circular logging for the new storage group.
Move all new mailboxes to the new mailbox database.

C.
Move the storage group path for the First Storage Group to an external disk. Compress the external disk.
Move all new mailboxes to the default mailbox database.

D.
Enable local continuous replication for the First Storage Group. Move all new mailboxes to the default
mailbox database.

Explanation:
EMC > Server Configuration > Mailbox > Database Management > Storage Group > Properties > Enable circular logging