Exchange user knows the importance of
Exchange Server, that’s why they are regularly updated by current
backup of Exchange database.
There are two possible ways that can be
used to take backup of Exchange database:-
Online Backup and
Offline Backup
Online Backup:- As the name is
showing, this backup can be done only when Exchange Server is
operative. It means taking backup in Exchange Server that is
accessible in bacup software. In other words Exchange Server is
online and allowing user for transaction of work without any delay
and interruption. Main feature of Online backup is when it completes
it automatically clear database log that is created in taking backup.
Offline Backup:-In this backup
process Exchange Server should be shut down. Then make a copy of
original data and try to take backup from that so if any corruption
happens, there is a secured second database for taking backup.
This is the method that restores the
Exchange System at its last transaction log file. In this method
inconsistent database files come. But when Exchange Server is
properly shutdown all transactions are being committed to the
database then only restoring of database is in consistent state. That
is called planned offline method.
When Server fails, we have to copy
database in some other location or suppose if Exchange Server fails
before this backup, databases can't be consistent. So only one way is
left with us that is repairing corrupted files with recovery process.
That is called unplanned offline method.
There is a fact that at the file system
level Exchange store is checked for corruption not at page level.
This can be done by verifying checksum at 4 kb block or page in the
database. Or suppose checksum is wrong then Exchange will not allow
to take backup. Checksum failure leads to termination of backup
process.
If services are running and you are
trying to back up of files and folders of actual Exchange server, you
may succeed but without skipped files.
These all methods are for taking backup
when server is in running state or there is no damage in its
database. But many times it happens that while taking backup or while
mounting data from backup files it may be possible that BKF file gets
damaged or corrupted. Then you will need an effective and professional third party Exchange BKF file repair tool to recover backup file.
One of my friends was telling me about
such tool that is low priced and provides effective and secured
recovery.
The name of that software is Stellar
Phoenix Exchange BKF Recovery that is compatible with MS Exchange
Server 2007 and 2003. This fabulous tool repairs BKF, LOG and STM
file in easy three steps. This perfect Exchange BKF repair application provides an option to search BKF file from any specific
drive and repairs large size damaged and corrupted backup files.
0 comments:
Post a Comment