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Five Reasons Why Smaller Organizations Should Consider High Availability

High Availability / Disaster Recovery
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Dramatic changes in cost and ease of use have made downtime-reducing technologies more accessible.

 

Editor's Note: This article is an introduction to the white paper "Five Reasons Why Smaller Organizations Should Consider High Availability."

 

Until recently, IBM System i high availability solutions were reserved mostly for large enterprises. Now that high availability is dramatically easier to use and less expensive to own and manage, the landscape has changed. Thousands of small and mid-sized companies can now afford the "luxury" of real-time, offsite data protection, as well as rapid and complete data recovery.

 

Fortunately, this shift is occurring just as downtime is causing more of a disruption and expense to businesses than ever before. With technology costs dropping and downtime costs skyrocketing, companies of all sizes have a huge incentive to evaluate System i high availability technology.

 

This article provides a review of the core causes and costs of both planned and unplanned downtime and then includes a detailed discussion of current options for high availability and disaster recovery solutions. Most important, you will see why true high availability (HA) and disaster recovery (DR) protection are now within reach of even the smallest of businesses.

RPO Versus RTO

Before looking more closely at the cost factors of HA—and why each has changed so significantly—it is helpful to first understand the concepts of recovery time objective (RTO) and recovery point objective (RPO).

 

The graph in Figure 1 shows a variety of common System i business continuity technologies in which one axis indicates the time it takes to recover data after a failure/disaster (the RTO) and the other axis indicates the completeness of data that is ultimately recovered (the RPO).

 

040912VisionWP

Figure 1: This graph represents RPO and RTO and the spectrum of System i DR solutions/strategies.

 

At the low end of the DR spectrum is tape backup (basic availability) and at the high end is HA, a process more technically known as logical data replication-plus-switchover (LDR+Switch), which rapidly moves users and processes to a fully mirrored secondary server in order for it to assume all or most of the functions of the production server.

 

Unfortunately, the perception of many mid-size and small companies is that HA technology is so much more expensive than basic disaster recovery protection that it is considered "out of reach" in terms of both cost and complexity. But, in line with most other computing technologies, the range of options between the most basic DR protection and the high-end, fault-tolerant, enterprise-scale solutions has increased, and, overall, the cost of all the options has come down—radically in some cases.

Factors of High Availability Costs

High availability is certainly not "cheap" when you consider all of the components that are needed. What has changed is how the cost of each of these factors—each for its own reasons—has dropped. Here are the major components that contribute to the cost of an HA solution:

  • Hardware
  • Communication bandwidth
  • High availability software
  • High availability management

 

So what has changed? Why should you re-consider whether you can justify investment in a true high availability solution?

 

Vision Solutions, Inc.

Vision Solutions, Inc. is the world’s leading provider of information availability software and services for Windows, Linux, IBM Power Systems and Cloud Computing markets. Vision’s trusted MIMIX® and iTERA™ high availability and disaster recovery brands support business continuity, satisfy compliance requirements and increase productivity. Affordable and easy-to-use, Vision products are backed by certified worldwide 24X7 customer support centers and a global partner network that includes IBM (NYSE:IBM), HP (NYSE:HPQ), Microsoft (NASDAQ:MSFT), VMware (NYSE:VMW) and Dell (NASDAQ:DELL). Privately held by Thoma Bravo, Vision Solutions is headquartered in Irvine, California, USA with offices worldwide. For more information, visit visionsolutions.com, search for VSIChannel on popular social networks or call 1 800.957.4511 (toll-free U.S. and Canada) or 801.799.0300.

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