Practice Quiz

CompTIA Network+

Category - Management

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Jack is planning to implement a fault tolerant mechanism on his company’s web server. This is to avoid having to replace a failed drive and restore data without blocking data requests from many of the company’s valuable customers. Which of these features should he implement on the web server?
  1. Incremental backup
  2. RAID 0
  3. UPS
  4. RAID 1
Explanation
Answer: D - He should implement RAID 1 or data mirroring to be able to replace a failed hard drive on the fly.

Key Takeaway: RAID 1 creates an exact copy (or mirror) of a set of data on two or more disks. This is useful when read-performance or reliability is more important than data storage capacity. A drive has its data duplicated on two different drives using either a hardware RAID controller or software. If either of the drives fail, the other continues to function as a single drive until the failed drive is replaced. It is popular for those who require fault tolerance and don't need top-notch read performance.
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