HP-UX 11i Version 1.5 Release Notes, May 2001

File and Disk Management
LVM and MirrorDisk/UX
Chapter 4 69
LVM and MirrorDisk/UX
HP-UX 11i Version 1.5 (B.11.20) includes IPF functionality for basic
Logical Volume Manager (LVM) features includingnon-boot disk support
and full mirroring capability on non-boot disks in a stand-alone
configuration. LVM boot disks are not supported in this release.
If you are familiar with LVM on previous releases of HP-UX you have
access to the same features on IPF-based platforms as you had on
PA-RISC platforms on earlier releases. In many cases, the inclusion of
LVM will aid your migration from PA to IPF. Instead of being forced to
start with clean disks or to migrate all of your data to the VERITAS
Volume Manager (VxVM), before moving to an Itanium-based platform,
you will be able to use your pre-built data along with the LVM commands
that are already familiar.
Note that not all LVM functionality is provided on IPF systems for the
HP-UX 11i Version 1.5 (B.11.20) release. High availability features such
as Shared LVM (SLVM - for cluster configurations) and Business
Copy/BCV/ snapshot features for high-end arrays are not supported.
Likewise, support for LVM-formatted boot disks is not supported
(including root, swap and dump to LVM disks) in this release.
Disk striping capability is provided with this version of LVM on
Itanium-based systems and, when used appropriately, may significantly
improve disk-access times. See Managing Systems and Workgroups for
more information.
LVM Compatibility
LVM data developed on a PA-RISC system may be imported to be used
on an IPF system (and vice-versa). Both PA-RISC and IPF platforms,
however, carry the same constraint that LVM-formatted devices are not
compatible with VxVM.
LVM Documentation
Boot-disk options are not available on IPF-based systems in HP-UX 11i
Version 1.5 (B.11.20). See the lvlnboot (1M), lvrmboot (1M), and pvcreate
(1M) for more information. Additional information about LVM can be
found on the web at http://docs.hp.com.