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Feature Article :. Is High Availability for You? If you are concerned about maintaining the integrity of your critical applications then perhaps you should be looking at data and applications availability. This is the first in Key's Series on High Availability. by Pete Elliot, Director of Marketing Are you concerned about the ongoing viability of your critical applications under any circumstance? If you aren’t, maybe you should be. From a critical apps standpoint, availability is everything….the app is either fully running (available) or it isn’t…..the latter can spell disaster for organizations on or approaching a 24X7 footing. click here to continue reading From the KEY e-Lab:. Are You a High Availability (HA) Candidate? Self-test on HA To the extent that these characteristics apply to your organization, your organization is a candidate for HA. 1. Production window is exploding. 2. Time for backups is shrinking/vanishing. 3. Growing night batch runs. 4. Business intelligence, data mining, electronic data interchange apps. 5. External mandates for a disaster recovery plan. 6. Hosting Web server for Internet. 7. Planned eCommerce apps. 8. ERP environment (SAP, JDE, Infinium, Lawson, others). 9. Client-server applications. 10. Global computing scenarios. 11. Server consolidation. 12. Need for 24X7 operation. click here for a more extensive list KEY Issue:. Availability vs. Reliability Why you need to know the difference You may wonder "Why the concern with availability?", when computers have such high degrees of reliability engineered into them. For example, the iSeries is rated by IBM as having a reliability rating of 99.94 percent….which results in only 5.2 hours/year lost due to the server not working properly…so why be concerned with availability? Unfortunately, a server can be operational and still not available to mission-critical applications. Taking a system down for nightly backup or other planned downtime activities does not impact its reliability, but can seriously degrade availability. HA solutions increase availability but have no effect on reliability. KEY Definitions:. Availability: – Definition 1: The ability of an organization to deliver consistent, predictable access to data and applications. Definition 2: The measurement of how much uptime you are providing your users. High Availability: - Minimal loss of uptime due to planned or unplanned causes. Reliability: - Definition 1: A hardware measurement for the Mean Time Between Failure (MTBF) for specific components. Definition 2: The percent of expected working operational time that a model of a server can be expected to be working (99.94% for iSeries). Key Information Systems, Inc., (www.keyisit.com) a Premier Business Partner with IBM, is a systems integration company located at 22120 Clarendon St., Suite 100, Woodland Hills, CA 91367, USA. Founded in 1995, the company provides corporate infrastructure architecture for business continuity, storage, and e-business solutions. Key Information Systems is a leading provider of IBM server solutions for the iSeries, AIX (UNIX), NT, and Linux platforms and has distinguished itself by extending its high availability infrastructure solutions to the Internet economy. The company delivers a complete range of professional services including education, maintenance, and IBM Global Financing. For more information, please visit the company online or call 1-877-442-3249 You have received a copy of KEY Insights if you’d like to be removed, please click here. |
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