In this lesson, Nick Palazzolo, CPA, delves into the critical aspects of system availability within IT management. He explores what constitutes system availability and why it's a vital metric, typically showcased as a percentage to indicate how operational and accessible an IT system is when needed. Nick breaks down key concepts like agreed service time, and planned versus unplanned downtime, clarifying their roles in the overall system availability calculations. A detailed discussion on the calculation of availability percentage provides practical insights, accompanied by an example to aid comprehension. Furthermore, Nick examines the meanings and impacts of mean time between failures and mean time to repair, emphasizing their importance in enhancing system reliability and availability. This lesson equips you with a thorough understanding of how to measure and interpret various system availability metrics, essential for any IT professional.
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