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Chapter 20. Bare Machine Recovery
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complex or an IBM
^
Cluster 1600, SysBack has specific boot and
install utilities to interact with Parallel System Support Program (PSSP).
Quick, easy setup and use
SysBack is SMIT menu driven and also enables complete command-line
interaction. The most basic, initial configuration to perform a system backup
takes a matter of moments. Other features can be configured as desired and
are also quickly enabled.
20.2.1 An introduction to SysBack
For those who are not already SysBack users, this section briefly highlights the
features of the product.
Backup options
SysBack provides five levels of backup granularity. In order of the most system
comprehensive to the least, they are as follows:
Full system (installation image)
This is the only backup type that can be used to completely reinstall a system
or partition. It is similar in function to mksysb, but also includes raw logical
volumes, and optionally, non-rootvg data. In addition, any subset of this
backup can be individually recreated or restored. For example, an individual
volume group, individual file systems or logical volumes, or specific files or
directories can be recovered from this backup type.
This is also the only type of backup that can be sent to CD or DVD in addition
to a tape or a file on disk.
Volume group
This backup type backs up any active volume group on the system or
partition. From this backup, you can recreate the LVM structure of a volume
group and all of its file systems and logical volumes, as well as restore the
data within them. Although this backup type allows you to back up the root
volume group, we do not recommend that you do so, because you would not
be able to reinstall a system or partition from a volume group backup of
rootvg. Also, many of the LVM structures cannot be recreated on a running
system or partition.
File system
This backup type backs up specified file systems. From this backup type, you
can recreate the LVM structure of the file system and restore its data.
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