Acronis Recovery for Microsoft Exchange - User Guide - Manual (Page 66)

Using Dial Tone Recovery
Restoring a huge Microsoft Exchange Server database may take several hours before
users can start working with it again after a disaster. But Acronis Recovery for MS
Exchange makes it possible to use a dial tone to recover e-mail service in the first
place, and only then restore users’ data as it becomes available (only in Microsoft
Exchange Server 2007).
Main advantages of using dial tone mode are independence from the log’s size and
almost instant access to the e-mail service.
At first, a temporary empty dial tone database will be created. Microsoft Exchange
Server will create new mailboxes (with the same GUID values as the old ones) in this
database, so that users can start sending and receiving e-mails, but other data (such
as contact lists, rules, stored e-mails, etc.) still will not be available. This process takes
only two minutes or even less. After restoring the database to the selected location
and applying logs, all recovered data will be merged with new e-mails (which were
sent or received during the dial tone recovery) bringing mailboxes to the up-to-date
state, which takes the database off-line for several minutes. On operation completion,
temporary dial tone databases will be deleted.
Note, public folders can not be restored using dial tone mode, i.e while
restoring storage groups, which contain mailboxes and public folders, only
mailboxes will be restored. We recommend you to restore public folders
separately, not using dial tone mode.
Comparing Acronis Active Restore and Dial Tone Recovery
Acronis Active
Restore Dial Tone
Recovery
MS Exchange accessibility while
restoring
yes limited
Public folders restoring yes no
Supported MS Exchange editions all editions
only MS Exchange
2007
Logs size affection yes no
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