VERITAS Volume Manager 3.1 Migration Guide

VxVM and LVM
Introducing the VERITAS Volume Manager
Chapter 114
Introducing the VERITAS Volume Manager
The VERITAS Volume Manager is an alternative Volume Management
product for HP-UX that includes mirroring features. It offers many
capabilities that are not available with the LVM and MirrorDisk/UX
products today.
• The VERITAS Volume Manager can coexist with LVM. Users can
decide which volumes they want managed by each volume manager.
For users who want to migrate LVM volume groups to VxVM disk
groups, a conversion utility is included. This utility, vxvmconvert,is
described in detail in Chapter 2, Converting LVM to VxVM,.
• With HP-UX 11i, the VERITAS Volume Manager is available for
installation with the HP-UX 11i Application Software. Basic volume
management capabilities are available for no extra charge. Advanced
capabilities, such as mirroring, RAID-5, and DMP for active-active
systems are available in a separately licensed product, B9116AA.
With HP-UX 11i, the VERITAS Volume Manager cannot be used to
manage the root disk.
• With HP-UX 11i Version 1.5, the VERITAS Volume Manager is the
default volume manager and can be used to manage the root disk.
Basic volume management capabilities are included in the operating
system. Advanced capabilities, such as mirroring, RAID-5, and DMP
for active-active systems are available in a separately licensed
product, B9116AA.
• The VERITAS Volume Manager is integrated with HP
MC/ServiceGuard and ServiceGuard OPS Edition for High
Availability, but requires a specific version of the ServiceGuard
products. Refer to the VERITAS Volume Manager 3.1 for HP-UX
Release Notes for details about the required version number, as well
as the availability of specific features in your release.
Notable Features of VxVM
The VERITAS Volume Manager provides many features, some of which
are not available with LVM or MirrorDisk/UX. Notable VxVM features
are described in the list below. Seethe VERITAS Volume Manager 3.1 for
HP-UX Release Notes for a more detailed list of features available in each
VERITAS Volume Manager product. See the other VERITAS Volume