nerdexam
CompTIA

SK0-003 · Question #811

Which of the following RAID levels has high read performance and only allows data to be written to half the available physical hard drive space?

The correct answer is B. 1. RAID 1 offers high read performance and redundancy but reduces usable storage to half the total physical hard drive space.

Server hardware installation and management

Question

Which of the following RAID levels has high read performance and only allows data to be written to half the available physical hard drive space?

Options

  • A0
  • B1
  • C5
  • D6

How the community answered

(27 responses)
  • B
    96% (26)
  • D
    4% (1)

Why each option

RAID 1 offers high read performance and redundancy but reduces usable storage to half the total physical hard drive space.

A0

RAID 0 (striping) offers high read and write performance and uses 100% of available disk space, but provides no fault tolerance.

B1Correct

RAID 1 (mirroring) stores identical copies of data on two or more drives, allowing read operations to be performed from any drive in the mirror set, which can result in high read performance. However, because data is duplicated, only half of the total physical drive capacity is available for data storage.

C5

RAID 5 (striping with distributed parity) provides good read performance and fault tolerance but utilizes (N-1) drives for data, not exactly half.

D6

RAID 6 (striping with dual distributed parity) offers good read performance and enhanced fault tolerance but uses (N-2) drives for data, not half.

Concept tested: RAID 1 characteristics - performance and capacity

Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/understanding-raid

Topics

#RAID levels#RAID 1#Read performance#Storage capacity

Community Discussion

No community discussion yet for this question.

Full SK0-003 Practice