Quick Answer
The answer is RAID 6, as it delivers maximum read performance with fault tolerance for two drive failures by striping data across all drives and calculating dual parity information. This means the array can survive any two drives failing simultaneously without data loss, while read speeds remain high because all drives are read in parallel. On the CompTIA A+ Core 1 220-1201 exam, this question tests your ability to differentiate RAID levels by their fault tolerance and performance characteristics—a common trap is confusing RAID 6 with RAID 5, which only tolerates a single drive failure. A useful memory tip is to think of the “6” in RAID 6 as representing the two parity drives needed to protect against two failures, making it the go-to choice when redundancy is the top priority.
This 220-1201 practice question tests your understanding of storage and raid troubleshooting. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A technician is setting up a new file server with four 4 TB SATA SSDs. The customer requires maximum read performance and fault tolerance for up to two drive failures. Which RAID level should the technician choose?
RAID 0
Why wrong: RAID 0 offers no fault tolerance; any single drive failure causes data loss.
RAID 1
Why wrong: RAID 1 mirrors data across two drives, but with four drives, it only tolerates one failure per mirrored pair, not two overall.
RAID 5
Why wrong: RAID 5 tolerates only one drive failure, not two.
RAID 6
Correct. RAID 6 uses dual parity and can survive two simultaneous drive failures, with excellent read performance.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
RAID 6
RAID 6 stripes data and uses dual parity, allowing up to two drive failures while maintaining good read performance. This question tests knowledge of RAID levels and their fault tolerance capabilities.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
RAID 0
Why it's wrong here
RAID 0 offers no fault tolerance; any single drive failure causes data loss.
RAID 1
Why it's wrong here
RAID 1 mirrors data across two drives, but with four drives, it only tolerates one failure per mirrored pair, not two overall.
RAID 5
Why it's wrong here
RAID 5 tolerates only one drive failure, not two.
RAID 6
Why this is correct
Correct. RAID 6 uses dual parity and can survive two simultaneous drive failures, with excellent read performance.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Storage and RAID Troubleshooting — This question tests Storage and RAID Troubleshooting — Read the scenario before looking for a memorised answer..
The correct answer is: RAID 6 — RAID 6 stripes data and uses dual parity, allowing up to two drive failures while maintaining good read performance. This question tests knowledge of RAID levels and their fault tolerance capabilities.
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 18, 2026
This 220-1201 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1201 exam.
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