HP-UX 11i v3 Installation and Update Guide, September 2008 (Update 3 Release)

Reduce Downtime Using Dynamic Root Disk
Dynamic Root Disk (DRD) is an HP-UX system administration toolset used to clone
an HP-UX system image to an inactive disk for software maintenance and recovery.
The bundle name is DynRootDisk. The product name is DRD. Administrators can
use DRD to reduce downtime for system maintenance by creating an inactive clone of
the booted system, then applying patches and products to the clone. The modified
clone can then be booted at a convenient time.
The HP-UX Dynamic Root Disk website at http://docs.hp.com/en/DRD provides a
product overview, download links, documentation links, and installation instructions.
The Next Step
Continue with Chapter 8: “Verifying System Install or Update” (page 105).
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