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A mission critical system is a system that is essential to the survival of a business or organization. When a mission critical system fails or is interrupted, business operations are significantly impacted.
A mission-critical system is also known as mission essential equipment and mission critical application.
Techopedia Explains Mission Critical System
For example, when water treatment facility pumps are stalled, or a jet engine fails, all related operations cease. When such systems are interrupted, organizations face substantial repercussions and hampered productivity.
For most IT businesses and organizations, database systems and process control servers are mission critical systems. Data centers and database servers for Internet applications must be protected from scenarios resulting in the potential loss of all functions, such as power shortages or faulty hardware. Most system backups are set up in a redundant and seamless manner, so that when a system is down, backup takes over during recovery.
