VERITAS Volume Manager 4.1 Release Notes (5900-0591, March 2010)

Chapter 1 9

VERITAS Volume Manager 4.1 Release

Notes

This document provides information on VERITAS Volume Manager Release 4.1. The

VERITAS Volume Manager 4.1 is supported on HP-UX 11i v2.

The following topics are discussed in this document:

• “New Features in VERITAS Volume Manager 4.1” on page 9

• “Features of Base-VXVM compared to LVM” on page 14

• “VERITAS Base-VXVM 4.1 Licenses” on page 15

• “Compatibility Information and Installation Notes” on page 17

• “Known Problems and Workarounds” on page 17

New Features in VERITAS Volume Manager 4.1

New features in Base-VXVM 4.1 include the following:

• Intelligent Storage Provisioning (ISP)

The ISP Service is an alternative to the traditional method of creating and managing

volumes. ISP creates volumes from available storage with capabilities that you specify by

consulting the externally defined rule base for creating volumes, and comparing it to the

properties of the storage that is available. Please refer VERITAS Storage Foundation 4.1

Intelligent Storage Provisioning Administrator’s Guide for more information.

• Enhancements to Device Discovery Layer (DDL)

The Device Discovery Layer was introduced in an earlier release of VxVM. This release

enhances the DDL by adding the following functionality:

— Dynamic discovery of disks or their attributes

— Allowing DMP kernel extensions to support multipathing and/or load balancing in a

configuration that is specific to a particular disk array.

— Previous releases of VxVM supported two naming schemes, OS-Native Scheme and

Enclosure-based Naming. Although VxVM provided the means of changing between

the two schemes dynamically, it was necessary to restart vxconfigd which is a

time-consuming operation. With this release, the vxconfigd restart operation is no

longer necessary.