Database Backup Strategies - Computer Associates BABNWUP900NE6 - BRIGHTSTOR ARCSERVE BACKUP V9 Manual

Backing Up

Database Backup Strategies

Full Daily Backup
Full with Incremental
Full with Differential
3–8 Backup Agent for Microsoft Exchange Server Option Guide
\SRSDATA
Each Storage Group has its own subdirectory for its database files. The databases
selected for back up must be mounted. The actual files backed up depend on the
objects and the options selected.
The Backup Agent Brick Level option allows you to back up individual
mailboxes and folders with the MAPI method (Messaging API). Before you back
up individual Exchange mailboxes or folders, you should be aware that
performance is slower when backing up or restoring individual objects
compared to database level backups. The following limitations apply when
backing up and restoring mailboxes at the brick level:
The BrightStor ARCserve Backup browser does not display newly created
empty mailboxes.
The backup of a mailbox that has been exported to a PST file reports its
status as successful.
BrightStor ARCserve Backup and the Backup Agent provide the following
strategies for backing up your data. You should select the strategies that best suit
the needs of your organization.
When this strategy is used, a full backup is performed every day. The advantage
of a full daily backup is that if there is a catastrophic system failure on Thursday,
only one media group is required to perform a full restore of the system. The
disadvantage of this strategy, compared to other methods, is that backups can
take a great deal of time each day.
In this strategy, a full backup is performed every Friday. On Monday, everything
that has changed since Friday is backed up. On Tuesday, everything that has
changed since Monday is backed up, and so on. The advantage of this method is
that the daily backup time is minimized. The disadvantage is that if there is a
catastrophic system failure on Thursday, more time and more media are needed
to perform a full restore of the system.
When using this strategy, a full backup is performed on Friday. On Monday,
everything that has changed since Friday is backed up. On Tuesday, everything
that has changed since Friday is backed up, and so on. The advantage of this
strategy is that if there is a catastrophic system failure on Thursday, a full restore
can be performed more quickly than with incremental backups. The
disadvantage is that each day, backing up the system takes progressively longer.
However, the time required for backup is less than when using the full daily
backup method.