HP-UX 11i June 2004 Release Notes

HP-UX 11i Version 1 Operating Environment Applications
HP-UX 11i v1 Enterprise Operating Environment (EOE)
Chapter 6
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NOTE For documentation about HP PRM in previous releases of HP-UX 11i v1, see HP-UX 11i
June 2002 Release Notes, available at http://docs.hp.com.
Documentation
•The prm (1) manpage provides an overview of PRM and points to all the other
manpages.
• The following documents are available at
http://docs.hp.com/hpux/ha/index.html#Process%20Resource%20Manager:
— HP Process Resource Manager User’s Guide
— HP PRM Version C.02.02 Release Notes for HP-UX 11.0, HP-UX 11i V1.0, and
HP-UX 11i V2.0
• For more information on PRM, see http://www.hp.com/go/prm. Click “Information
Library” for white papers.
MirrorDisk/UX
Prior to HP-UX 11i v1, Logical Volume Manager (LVM) mirroring supported the
non-Shared Logical Volume Manager (non-SLVM) environment only. In other words, the
disks were only accessible by a single system and could not be shared by multiple hosts.
Beginning with HP-UX 11i v1, LVM mirroring now automatically enables SLVM for a
two-node environment supporting both non-SLVM and SLVM environments. All LVM
systems can mirror their data on disk, and the mirrored copy of the data can also be
accessed from a two-node cluster.
Impact
There have been no changes to the LVM command interface to enable LVM mirroring in
the SLVM environment. Therefore, you must still use the lvcreate and the lvextend
commands to create mirrored logical volumes. The only software code changes were
made to the HP-UX kernel and do not affect any LVM manpages, or the MirrorDisk/UX
version B.11.11 products, which are:
• B5403BA MirrorDisk/UX License for Workstations
• B2491BA MirrorDisk/UX License for Servers
To make use of the LVM mirroring capability, you may want to add extra disks to the
volume group to mirror the data.
Compatibility Issues
There is no need to make any changes to scripts or makefiles to make use of the LVM
mirroring capability in the SLVM environment.