A database administrator is tasked with ensuring high availability and fault tolerance for a critical database that must operate 24/7. Which of the following solutions should be implemented to meet these requirements?
Creating a regular backup schedule for the database
Implementing RAID on the database server's storage system
Setting up database mirroring across multiple servers
Transitioning the database to a more robust mainframe
Configuring database mirroring involves having multiple database instances that are exact copies of each other. If the primary database fails, one of the mirrored databases can take over, ensuring that the database service remains available. While RAID can protect against disk failures, it does not cover the entire database system failure. A single mainframe, regardless of its robustness, represents a single point of failure. A regular backup schedule provides a way to restore data but does not guarantee high availability in real time.
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What is database mirroring, and how does it ensure high availability?
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Why is RAID not sufficient for ensuring high availability in this context?
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How does database mirroring differ from regular backups in ensuring availability?
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