A small business needs to ensure its file server is always accessible to employees, even if the primary server's hardware fails completely. Which of the following strategies best ensures the file server remains available with minimal interruption?
Performing daily backups of the server's data to an external drive
Installing a RAID 1 disk array in the primary server
Configuring a second, identical server to take over automatically if the primary server fails
Upgrading the primary server with a faster processor and more memory
Configuring a second, identical server to take over automatically provides high availability. If the primary server fails, the secondary server seamlessly takes its place, minimizing downtime. Daily backups are for disaster recovery and would require a lengthy restore process, causing significant downtime. RAID protects against disk failures but not a total server failure (e.g., motherboard or power supply). Upgrading the server's performance does not protect it from failing.
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What is database mirroring?
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Why is RAID insufficient for database high availability?
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How is database mirroring different from regular backups?