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Exam 220-1001 topic 1 question 368 discussion

Actual exam question from CompTIA's 220-1001
Question #: 368
Topic #: 1
[All 220-1001 Questions]

A technician needs to configure a high-end workstation with four hard drives for redundancy. The customer wants the end result to have the highest capacity possible but still have the ability to survive a drive failure. Which of the following RAID levels should the technician configure to accomplish this?

  • A. RAID 0
  • B. RAID 1
  • C. RAID 5
  • D. RAID 10
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Suggested Answer: C 🗳️
by user54321 at May 20, 2021, 4:52 p.m.

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user54321
Highly Voted 3 years, 11 months ago
Should the answer not be RAID 5 since the customer wants the highest possible capacity but still able to survive loss of a drive. RAID 10 would reduce capacity to 2 drives. RAID 5 you would still get to use all 4 drives you would just use some space for parity blocks
upvoted 10 times
JE39
3 years, 10 months ago
Definitely Raid 5. With raid 10 you will lose effectively 50% of your Storage. Raid 5 will give you fault tolerance through parity and you only sacrifice 1 disk worth of storage rather than 50% like Raid 10. In this case you will be able to use the equivalent of 3 disks for storage with Raid 5.
upvoted 3 times
SCGRAANTJE
3 years, 7 months ago
Raid 5 requires 3 disks to set up, right? How will the 'extra' disk it leaves you with provide extra storage and redundancy? I am no expert, but my reasoning tells me it will provide extra storage without redundancy which does not serve the purpose. I would go RAID 10
upvoted 2 times
gomet2000
3 years, 7 months ago
Raid 5 needs at least 3 disks...but It can have 4. He wants the maximum amount of size so using the fourth disk makes sense.
upvoted 2 times
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sanjivala
Most Recent 1 year, 11 months ago
Selected Answer: C
To achieve the highest capacity possible while maintaining redundancy and the ability to survive a drive failure, the technician should configure RAID 5.
upvoted 1 times
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varin
2 years, 7 months ago
surely Raid 5 !!
upvoted 1 times
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Dido1963
2 years, 10 months ago
Selected Answer: C
RAID 5 has more capacity than RAID 10.
upvoted 2 times
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iLikeBeagButt
3 years ago
Selected Answer: C
I would go with RAID 5
upvoted 2 times
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_Anas
3 years, 6 months ago
lets say all four harddrives capacity is 1TB if we applied RAID 0 : No Fault tolerance. RAID 1 : "There should be exactly two drives in RAID1 (Mirror)" RAID 5 : Capacity (3 TB) / Fault tolerance(1-drive failure) RAID 10 :Capacity (2 TB) / Fault tolerance(At least 1-drive failure) http://www.raid-calculator.com/
upvoted 4 times
iLikeBeagButt
3 years ago
RAID 5 makes more sense based on this info, the customer is okay with "a (1) hard drive failure" with the highest capacity
upvoted 1 times
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