Installation guide

 Checkpoint file (.chk)

Tracks how far Exchange has progressed in writing logged information to the database file.

Storage group

In Exchange 2003/2007, a storage group is a logical container for Exchange databases (p. 55), the

associated transaction log (p. 57), checkpoint (p. 55), and other system files. All databases in a

storage group share a single log stream. A storage group is the basic unit for backup and recovery.

Starting with Exchange 2010, the concept of a storage group is discontinued. Therefore, you can

select individual databases for backup. Each database will be backed up along with the necessary

associated files.