98-365 · Question #18
Disk mirroring occurs when data is:
The correct answer is C. Duplicated on separate disks.. Disk mirroring, typically implemented as RAID 1, involves creating an exact duplicate of data from one disk onto a separate physical disk for redundancy.
Question
Disk mirroring occurs when data is:
Options
- ADuplicated on the same disk.
- BBacked up by using parity.
- CDuplicated on separate disks.
- DSplit between disks.
How the community answered
(40 responses)- A5% (2)
- C93% (37)
- D3% (1)
Why each option
Disk mirroring, typically implemented as RAID 1, involves creating an exact duplicate of data from one disk onto a separate physical disk for redundancy.
Duplicating data on the same disk does not provide redundancy against disk failure; if the disk fails, both copies are lost.
Backing up data using parity describes RAID levels like RAID 5 or RAID 6, which use parity information for redundancy, not mirroring.
Disk mirroring, commonly associated with RAID 1, involves duplicating data from one disk to a separate, identical disk, ensuring data availability in case one disk fails.
Splitting data between disks describes disk striping (RAID 0), where data is broken into blocks and written across multiple disks, which does not provide mirroring or redundancy.
Concept tested: Disk mirroring functionality
Source: https://learn.microsoft.com/windows-server/storage/disk-management/initialize-new-disks
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