3PAR InForm OS 2.3.1 MU4 Release Notes (QL226-96261, September 2011)

Introduction
This document provides the release notes for the HP 3PAR InForm OS (Operating System) and Command
Line Interface (CLI).
You should read this document prior to installing the 2.3.1 Maintenance Update 4 (MU4) version of
this product.
NOTE: These release notes describe the features and bug fixes included in InForm OS 2.3.1 MU4.
Refer to the appropriate release notes for all prior releases.
Audience
The information in these release notes is intended for use by HP 3PAR customers, partners, and HP
3PAR field representatives.
Related Documentation
The following documents also provide information related to storage systems and the InForm Operating
System:
Read the…For information about…
HP 3PAR InForm OS CLI Administrator’s Manual andHP 3PAR
InForm OS Command Line Interface Reference
Using the HP 3PAR InForm Command Line Interface (CLI) to
configure and administer HP 3PAR Storage Systems
HP 3PAR InForm Management Console Online HelpUsing the HP 3PAR InForm Management Console graphical
user interface to configure and administer HP 3PAR Storage
Systems
HP 3PAR InForm OS Concepts GuideHP 3PAR Storage Systems concepts and terminology
HP 3PAR Remote Copy User’s GuideUsing Remote Copy
HP 3PAR E-Class/F-Class Storage System Physical Planning
Manual
Determining HP 3PAR Storage System hardware
specifications, installation considerations, power
requirements, networking options, and cabling
HP 3PAR S-Class/T-Class Storage System Physical Planning
Manual
HP 3PAR InForm Operating System Release Notes
Online Upgrade Considerations
This feature allows the upgrade of the InForm OS concurrently with I/O activity on the attached hosts,
provided certain conditions are met. For further information and pre-planning Rolling Upgrades, refer
to the latest version of the HP 3PAR InForm OS Upgrade Pre-Planning Guide. To obtain a copy of this
documentation, go to http://www.hp.com/go/3par/ navigate to your product page, click HP Support
& Drivers, and then click Manuals.
NOTE: Installing this Maintenance Update (MU) will likely disconnect the management interfaces,
thereby ending the CLI and HP 3PAR InForm Management Console (IMC) sessions and possibly
generating alerts. This is expected behavior. If the management interfaces are disconnected, reconnect
and start new CLI or IMC sessions.
Introduction 3