VERITAS Volume Manager 5.0 Migration Guide (September 2006)

Chapter
1
VxVM and LVM
This chapter provides an overview of Veritas Volume Manager by Symantec (also
referred to as VxVM) and its features. A brief description of the benefits of migrating
from the HP-UX Logical Volume Manager (LVM) to VxVM, and the coexistence of
VxVM disks with LVM disks is also given.
The following topics are discussed in this chapter:
■ Introducing Veritas Volume Manager
■ VxVM and LVM—conceptual comparison
■ Coexistence of VxVM and LVM disks
Introducing Veritas Volume Manager
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.
■ 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 Converting LVM to VxVM.
■ From HP-UX 11i Version 2, the Veritas Volume Manager is available for installation
with the HP-UX 11i Version 2 Application Software. See the Release Notes for
details of features supported in this release.
■ From HP-UX 11i Version 2, the Veritas Volume Manager is the default volume
manager and can be used instead of LVM to manage the root disk. Basic volume
management capabilities are included in the operating system.
■ Veritas Volume Manager is integrated with HP MC/ServiceGuard and ServiceGuard
OPS Edition for High Availability, but requires a specific version of the