You are the messaging engineer for your company. You have deployed Exchange Server 2007.

Your company uses a centralized backup system that is nearing its peak capacity.

You need to recommend a backup plan for your Exchange Server 2007 Mailbox server that meets the following requirements:

Back up all mailbox data every Tuesday night.
Back up changes to mailbox data every night except Tuesday night.
Minimize the amount of time required to complete backups.
Minimize the risk of transaction log disks exceeding available disk space.

What should you recommend?

A.
Perform a normal backup on Tuesday night and a differential backup the other nights of the week.

B.
Perform a copy backup on Tuesday night and a normal backup the other nights of the week.

C.
Perform a differential backup on Tuesday night and a normal backup the other nights of the week.

D.
Perform a normal backup on Tuesday night and an incremental backup the other nights of the week.

Explanation:
Only Normal and Incremental Backups purge T-logs.

1. Back up Mailbox data every Tuesday night. Eliminates C.
2. Back up changes to data every other night. Eliminates B and C.
3. Minimize time required for backups. Requires D.
4. Prevent T-logs from exceeding disk space. Requires D and eliminates A.

http://www.msexchange.org/tutorials/Exchange-2003-Backup-Restore-NTBACKUP.html