Gartner Research

Data Center System High Availability

Published: 02 October 2008

ID: G00203609

Analyst(s): Richard Jones


As business operations' dependency on IT infrastructure continues to increase in response to the need for faster and leaner business processes, the need for these systems to be highly and continuously available also increases. Not only do high-availability designs focus on automatically detecting and reacting to failures, but, more importantly, they also focus on mitigating the downtime required for standard maintenance tasks. This Reference Architecture template outlines the approach and architecture to five levels of availability from no-recoverability to continuous availability and disaster recovery.

Table Of Contents

Template Applicability

Template Diagram

Template Description

  • Data Center Networks
  • Network Switches
  • Server Cluster
  • High-Availability Failover Software
    • Cluster Heartbeat
    • Quorum Manager
    • Cluster Resources
    • Resource Manager
    • Resource Monitors
  • Network Interface Controllers
  • Power Supplies
  • Storage Adapters
  • Storage Switches
  • Storage Devices
  • Power Distribution Systems
  • Cooling Systems

Revision History


©2021 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.

Already have a Gartner Account?

Become a client

Learn how to access this content as a Gartner client.