CompTIA Server+

Category - Server

Which of the following differentiates between disk mirroring and disk duplexing?
  1. Disk mirroring uses one controller for both drives, whereas disk duplexing uses one controller for each drive.
  2. Disk mirroring uses a minimum of three drives, whereas disk duplexing uses two.
  3. Disk duplexing uses a single controller for both drives, whereas disk mirroring uses one controller for each drive.
  4. Disk mirroring strips data, whereas disk duplexing shares data parity disks.
Explanation
Answer - A - Disk mirroring uses one controller for both drives, whereas disk duplexing uses one controller for each drive.

Key Takeaway: Disk mirroring is the process that writes duplicate data to two or more disks, allowing you to use half of your disk space, but providing error recovery. Disk duplexing is a variation of disk mirroring in which each of multiple storage disks has its own SCSI controller.
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