This chapter explains the procedure that you would use to recover your HP-UX operating system disk in case of a complete system failure—when you are left with nothing but bare metal. For suggestions on how to avoid this situation, please read the first section of Chapter 7.
Bare-metal recovery under HP-UX 10 can be performed using tools provided by Hewlett-Packard with the operating system. Three primary options are provided, each suited to a particular situation.
Ignite-UX, included on the Applications CD, provides a tool called make_recovery . make_recovery can be used to build a bootable image of the system on a tape. When disaster strikes, the system can be booted from the backup media and rebuilt in the state in which it was saved. A significant advantage of make_recovery is that it can be run on a live system, thus minimizing the downtime imposed by bare-metal recovery planning. However, Ignite-UX imposes significant disk requirements and must be installed locally on each system that will be saved to tape. Furthermore, make_recovery cannot be used to recover a system that has already failed in service.
copyutil , provided on the CD-ROM (CD content is available online at http://examples.oreilly.com/unixbr), can be used to build an image of a system on tape, block by block. In the event of a disk failure, copyutil can be used to salvage the readable areas of the disk, since it will skip bad blocks during the backup phase. The image then can be restored ...