Veritas Volume Manager 5.0 Migration Guide, HP-UX 11i v3, First Edition, May 2008

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.
■ Veritas Volume Manager is available for installation with all HP-UX 11i
Version 3 operating environments. See the Release Notes for details of
features supported in this release.
■ Veritas Volume Manager 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 ServiceGuard and
ServiceGuard OPS Edition for High Availability, but requires a specific