Installation guide

10 Glossary

Checkpoint file

A file that accompanies an Exchange transaction log (p. 57) stream and tracks how far Exchange has

progressed in writing logged information to the database file.

Circular logging

A Microsoft Exchange Server logging mode. In this mode, Exchange overwrites and reuses the

transaction log files (p. 57) rather than creating new log files.

Continuous Data Protection (CDP)

Continuous Data Protection (CDP) allows reverting the protected data to any point in time.

In Acronis Backup, CDP is a backup scheme applicable to Microsoft Exchange information stores (p.

56), storage groups (p. 57), and databases (p. 55). In this scheme, you specify when to perform full

backups. In addition, the transaction log files (p. 57) are backed up automatically as soon as they are

closed by Exchange. Having both full backups and transaction log backups (p. 57), you can select any

point in time to revert the Exchange data to.

Copy-only backup

Creating a full backup of a Microsoft Exchange information store (p. 56), storage group (p. 57), or

database (p. 55) without truncating (p. 57) the transaction log files (p. 57). Use this backup method to

obtain a full backup without disturbing continuous backup plans. For example, if a database is

protected with CDP (p. 55), you can do a copy-only backup of the database for transportation to an

off-site location, testing, analysis or other purposes.

Copy-only backup and express full backup (p. 56) are mutually exclusive. You can select only one of

these methods when creating a backup plan.

Database-level backup

A backup that contains Exchange databases (p. 55) and Exchange-related information from Active

Directory. When performing backup at a database level, Acronis Backup backs up database files,

transaction log files (p. 57) and other associated files at a file level from a snapshot taken using

Volume Shadow Copy Service (VSS). The Exchange server structure, cluster structure, user accounts

and user's settings are extracted from Active Directory.

The main purpose of this backup type is disaster recovery of Exchange. You can also recover

mailboxes, folders, e-mails, contacts, tasks, notes and other items directly from database backups.