IBM E16RMLL-I Implementation Guide - Page 671
An introduction to SysBack
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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. Chapter 20. Bare Machine Recovery 641
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