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Not just creating the bootable device

I think the combination of:

- creating a bootable device
- ability to do bare-metal restore
- preserve system partitioning/LVM configuration
- simple and self-contained

is the killer-feature. Afaict Bacula needs a client-server setup and configuration, whereas mksysb is just a single tool.

In most production environments there is an extensive backup-system (in this case Tivoli Storage Manager), still mksysb reduces recovery time (read: down time) and is complementary to an extensive backup-system.

Bacula is too complicated if you compare it to AIX mksysb, but could be an option if your company is already using Bacula.

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