Red Hat APPLICATION STACK 1.2 RELEASE Manual do Utilizador descarregar pdf (Página 9)

Chapter 1.

Introduction

The Migration Planning Guide documents the migration of any minor version of a Red Hat Enterprise

Linux 5 installation to Red Hat Enterprise Linux 6 by highlighting key behavioral changes worthy of

note when migrating.

This guide is intended to increase ease of use of Red Hat Enterprise Linux 6 by providing guidelines

for changes in the product between Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6. This

guide is however not designed to explain all new features: it is focused on changes to the behavior of

applications or components which were part of Red Hat Enterprise Linux 5 and have changed in Red

Hat Enterprise Linux 6 or whose functionality has been superseded by another package.

1.1. Red Hat Enterprise Linux 6

Red Hat Enterprise Linux is the leading platform for open source computing. It is sold by subscription,

delivers continuous value and is certified by top enterprise hardware and software vendors. From the

desktop to the datacenter, Enterprise Linux couples the innovation of open source technology and the

stability of a true enterprise-class platform.

Red Hat Enterprise Linux 6 is the next generation of Red Hat's comprehensive suite of operating

systems, designed for mission-critical enterprise computing and certified by top enterprise software

and hardware vendors. This release is available as a single kit on the following architectures:

• i386

• AMD64/Intel64

• System z

• IBM Power (64-bit)

In this release, Red Hat brings together improvements across the server, systems and the overall Red

Hat open source experience. The following are some of the many improvements and new features that

are included in this release:

Power Management

Tickless kernel and improvements through the application stack to reduce wakeups, power

consumption measurement by PowerTOP, Power Management (ASPM, ALPM), and adaptive system

tuning by Tuned.

Next Generation Networking

Comprehensive IPv6 support (NFS 4, CIFS, mobile support [RFC 3775], ISATAP support), FCoE,

iSCSI, and a new and improved mac80211 wireless stack.

Reliability, Availability, and Serviceability

System level enhancements from industry collaborations to make the most of hardware RAS

capabilities and NUMA architectures.

Fine-grained Control and Management

Improved scheduler and better resource management in the kernel via Completely Fair Scheduler

(CFS) and Control Groups (CG).

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Red Hat APPLICATION STACK 1.2 RELEASE Manual do Utilizador Página 9