Dynamic Root Disk A.3.10.* Release Notes (January 2012)

3. System and Software Requirements
3.1 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:
o 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, please 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.
3.2 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
http://www.hp.com/go/hpux-core-docs.
• On VxVM configurations, DRD expects OS Native Naming (osn). Enclosure Based
Naming (ebn) must be turned off.
3.3 Safe Command List
The drd runcmd command is used to run safe commands on the clone. The safe commands listed
below apply to all DRD releases, unless otherwise noted:
• swinstall