HP Serveur lame HP ProLiant BL465c Gen8 - Manual (Page 29)

User script files are used to perform a series of backup operations to copy data from a primary volume
to a secondary volume, and then from the secondary volume to a tape device. Using these scripts
allows system administrators to accomplish a series of commands in just one command.
Restoring data
Application Agent provides various commands that use volume replication functions to restore a
database or file system from a backup. You can use whichever restore command most suits your
specific needs. Having two options for restoring data is useful because it decreases the amount of
expertise required to restore file systems or databases managed by DBMSs.
Managing data by using dictionary map files
Application Agent can detect a variety of configuration definitions required for backup or restore
operations, such as information about file systems and databases, and disk management information
about RAID devices. Application Agent uses this information and creates a series of files called the
dictionary map files.
Application Agent refers to the dictionary map files for using RAID Manager, which helps reduce the
workload on system administrators.
The dictionary map files consist of the following files:
Application map file
This file stores information about the relationships between objects in the target database (such
as journal logs) and their associated files.
Core map file
This file stores information about the relationships between mount point directories for file systems
and disk numbers across RAID devices.
Copy group map file
This file stores information about the connections (mapping) between primary and secondary
volumes.
Backup catalog
The backup catalog stores the Application Agent backup history and the information pertaining
to generational backups. When a backup is performed, a new record that contains information
about the backup is created in the backup catalog. When Application Agent restores data from
a backup, Application Agent references the information in the backup catalog.
Information stored in the backup catalog includes the following:
• Backup ID
• Backup start date and time
• Backup source information
• Backup destination information
The backup ID is an ID used to uniquely differentiate sets of backup data. Application Agent
automatically assigns a 10-digit backup ID whenever data is backed up, and registers the ID in
the backup catalog.
When there are multiple sets of backup data, either because you are managing generations
(multiple secondary volumes that are associated with a single primary volume), or because you
have backed up data from secondary volumes to a tape device (after making a backup from the
primary volume to the secondary volume), you can restore the desired data by specifying the
backup ID. You can also specify a backup comment, if you want to be able to specify backup
data via a fixed character string instead of the normal 10-digit backup ID.
Application Agent CLI User Guide 29