Air Cleaner User Manual

For volume group incremental backups, an entire logical volume is included if any
part of the logical volume has changed. If no data in the logical volume had
changed, the logical volume is not included in the backup.
Understanding Pull Backups
Pull Backups help you centrally manage your backups by enabling you to initiate,
and thereby control, backup operations from a single location. You can further
automate this central management of backups using the SysBack Scheduling and
Scripting functions described in Chapter 20, “Scheduled Backups and Scripts”,on
page 20-1.
The machine that “pulls” the backup is called the “initiator” while the machine
that is backed up is called the “backup system”. The machine that receives that
backup data is called the “destination system”.
Pull backup enablement requires, not only Remote Services configuration, but also
Remote Command Access configuration. The Remote Services configuration
enables the data to be sent across the network from the backup system to the data
destination machine. The Remote Command Access configuration enables the
initiator system to pull the backups from the backup system.
Pull Backups can be done in a two-way or three-way manner. When the initiator
system is also the data destination system, this is a two-way backup. When the
initiator system is a different machine than the data destination system, and
different than the backup system, this is a three-way backup.
Note that for three-way backups, Remote Services must be configured between
Machine A, the backup system, and Machine B, the data destination. Remote
Command Access must be also configured between Machine A, the backup system,
and Machine C, the backup initiator. For more information on configuring Remote
Services and Remote Command Access, see Chapter 8, “Remote Services”,on
page 8-1.
The following SysBack backup options are discussed in this chapter:
v Backing up the System (Installation Image)
v Backing up Volume Groups
v Backing up File systems
v Backing up Logical Volumes
v Backing up Files or Directories
Backing up the System (Installation Image)
A system backup can be used in the following ways:
v To reinstall the entire system to its original state.
v To recreate or restore specific volume groups, file systems, or both on an already
active system.
v To install a system backup created on one machine onto another machine with a
different processor, platform type, or other system devices. This is called cloning.
However, the machine being backed up must have installed all of the device
support for the destination platform type, processor type and other required
devices.
To back up the entire system:
Chapter 4. Performing Backups 4-3