Dynamic Root Disk A.3.13 * Release Notes (766141-001, March 2014)

3 System and software requirements
This chapter discusses the system and software requirements for DRD.
Required patches and software
In order to install and run, DRD requires the following:
• Judy-lib (Judy data structure library) version B.11.11.04.13 or greater
• HP-UX 11i v2:
◦ One of the following releases of SW-DIST (Software Distributor)
– PHCO_38149 or superseding patch
– Product version B.11.23.0803.318 or greater
• HP-UX 11i v3: SW-DIST (Software Distributor) version B.11.31.0709 or greater When installing
DRD from an OE or AR or from Software Depot, these dependencies are installed if your
system does not already have them, which means that no special action is required on your
part.
DRD has patch requirements in addition to those listed above. For up-to-date information on which
patches are required and how to acquire them along with their dependencies, see the DRD
Downloads & Patches web page. If your root volume group is VxVM, there is a good chance you
will need to install a VXVM patch in order for DRD to operate correctly.
For more information about HP Dynamic Root Disk, see http://www.hp.com/go/drd-docs.
For more information related to HP-UX technical documentation, see http://www.hp.com/go/
hpux-core-docs.
Clone features
The DRD clone command supports the following configurations:
• Clone target must be a single physical disk (with optional second disk for mirroring) or SAN
LUN. If an LVM root volume is spread across multiple disks, it can still be cloned, but the clone
will be on a single physical disk. A VxVM root disk group may reside on several disks, but
each disk must be an exact mirror of every other disk. The clone of a VxVM root disk group
will reside on a single physical disk.
• Root volume must be LVM (DRD versions A.1.0, A.1.1 and A.2.0); root volume can be LVM
or VxVM (DRD versions A.3.0 or later.)
• Prior to DRD version A.3.0, the root volume name must be vg00; the drd clone command will
only clone the contents of vg00, regardless of other volume groups that exist (DRD versions
A.1.0, A.1.1 and A.2.0). The root volume group may have any name when using DRD version
A.3.0 or later.
• Due to system calls DRD (and many other HP-UX applications) depend on, DRD expects legacy
Device Special Files (DSFs) to be present and the legacy naming model to be enabled. Therefore
HP suggests only partial migration to persistent DSFs be performed as detailed in the HP-UX
11i v3 Persistent DSF Migration Guide at HPSC.
• On VxVM configurations, DRD expects OS Native Naming (osn). Enclosure Based Naming
(ebn) must be turned off.
Required patches and software 13