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Exam SY0-601 topic 1 question 665 discussion

Actual exam question from CompTIA's SY0-601

Question #: 665
Topic #: 1

A security administrator needs to create a RAID configuration that is focused on high read speeds and fault tolerance. It is unlikely that multiple drives will fail simultaneously. Which of the following RAID configurations should the administrator use?

A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10

Show Suggested Answer

Suggested Answer: D 🗳️

by NetTech at Aug. 29, 2023, 8:48 p.m.

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Abdulaa

Highly Voted 1 year, 1 month ago

23 APR 2024 I took my exam and i passed with 776, this question was on my exam this website was very helpful, study it and understood the answer. GL.

upvoted 11 times

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NetTech

Highly Voted 1 year, 9 months ago

Selected Answer: D

I would go with option D: RAID 10. RAID 10 generally has better performance than RAID 5 and it also provides fault tolerance.

upvoted 10 times

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Eromons

Most Recent 12 months ago

Selected Answer: A

Malicious scripts are code fragments that, among other places, can be hidden in otherwise legitimate websites, whose security has been compromised. They are perfectly baited for victims, who tend not to be suspected because they are visiting trusted website. Any time malicious JavaScript is loaded onto a critical page.

upvoted 1 times

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Geronemo

1 year, 1 month ago

Selected Answer: D

For high read speeds and fault tolerance, with a requirement that multiple drives are unlikely to fail simultaneously, the most suitable RAID configuration is: D. RAID 10 RAID 10 (also known as RAID 1+0) combines the benefits of RAID 1 (mirroring) and RAID 0 (striping). It offers high read speeds because data is striped across multiple drives, resulting in parallel read operations. Additionally, it provides fault tolerance by mirroring data across multiple drives. In a RAID 10 configuration, multiple drives can fail as long as they are not part of the same mirrored pair. This configuration offers both performance and redundancy, making it ideal for scenarios where both high read speeds and fault tolerance are priorities.

upvoted 2 times

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russian

1 year, 1 month ago

Selected Answer: D

Definitely D

upvoted 2 times

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BD69

1 year, 1 month ago

Selected Answer: C

In my biz, I would choose RAID 10 over RAID 5 as I need fast write speed and don't mind buying an extra drive (or extra pairs of drives) to accomplish what I need (and don't care about wasted space). RAID 5 answers the question best (though I wish they included "with the least number of drives" or something of that nature. The admin only cares about fast reading speeds and basic fault tolerance.

upvoted 1 times

BD69

1 year, 1 month ago

One thing I don't hear mentioned about RAID systems is hot spares (and extra drive bay with a drive in it that can come on line automatically - depending on the controller and software capabilities to take over a failed drive w/o any intervention).

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TM78

1 year, 3 months ago

Selected Answer: D

D. RAID 10 RAID 0 - Striped Volume - You only want to use RAID 0 for speed. It’s not fault tolerant. You need two disks or more. Good read and write performance. RAID 1 - Mirrored Volume - Uses two disks. Provides fault tolerance. Data written on one disk is duplicated, or mirrored, to the second disk. Good read performance, bad write performance. RAID 5 - Disk Stripe with Parity - Uses three or more disks. Uses disk striping with parity to provide fault tolerance. Good read performance, not so good write performance. RAID 10 - aka RAID 1+0 - A combination of mirroring and striping which makes RAID 10 fast and fault tolerant at the same time. Needs a minimum of four disks. Has same write performance as RAID 0 but double the read performance.

upvoted 4 times

LinkinTheStinkin

1 year, 3 months ago

Good, succinct explanation - thanks.

upvoted 3 times

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Malkhofash

1 year, 4 months ago

Selected Answer: D

Raid 10

upvoted 2 times

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crazee_mentalist

1 year, 4 months ago

Selected Answer: D

Chise RAID 10 due to "read speed"

upvoted 2 times

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NOEY18

1 year, 7 months ago

Selected Answer: D

Disk failure If two or more disks can fail in your setup, RAID 5 is your choice, as it’s not possible to recover data when two or more disks fail at the same time in RAID 10. While the chances for more disks to fail at the same time is minimal, it is still something to consider. But RAID 10 reconstructs data faster when a single disk has failed, so there’s no impact to read and write operations whereas RAID 5 takes a long time because of parity checks. Also, data is lost for good if the Uncorrectable Read Error (URE) occurs in RAID 5. In all, RAID 10 is your choice when you want to recover quickly from a disk failure without impacting existing operations.

upvoted 1 times

Cjg82

1 year, 6 months ago

"it’s not possible to recover data when two or more disks fail at the same time in RAID 10" This is not true, depending on the scenario. RAID 10 is a stripe of mirrors. Therefore you can lose multiple drives without data loss or speed loss as long as the failed drives are not from the same mirrored pair. Four disks = two pairs of mirrored drives, striped together. Each time you add two drives to RAID 10 you've added another mirrored pair into the striping set. So if you have six drives, you could theoretically lose up to 3 drives without a performance impact or data loss as long as no single mirrored pair went down together. RAID 5 is less resilient than that and will stop working if more than one drive fails, regardless of the number of disks in the array. RAID 6, on the other hand, can lose two of its drives and still keep going (albeit at reduced performance) no matter which drives they are.

upvoted 2 times

BD69

1 year, 1 month ago

Exactly, it depends on which 2 disks fail

upvoted 1 times

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Fiftypeso

1 year, 8 months ago

Selected Answer: C

C - RAID 5 questions says "read" and fault "tolerance" RAID 10 offers fantastic performance for random reads and writes because all operations occur in parallel on separate physical drives. RAID 5 also offers great read performance because of striping. However, writes are slower because of the overhead of calculating parity.

upvoted 4 times

BD69

1 year, 1 month ago

good points

upvoted 1 times

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JC48554522

1 year, 8 months ago

Correct answer D For high read speeds and fault tolerance with the assumption that multiple drives are unlikely to fail simultaneously, the best RAID configuration to use is: D. RAID 10 RAID 10, also known as RAID 1+0, combines the benefits of RAID 1 (mirroring) and RAID 0 (striping). In a RAID 10 configuration, data is both mirrored and striped across multiple drives.

upvoted 1 times

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mpengly88

1 year, 8 months ago

Selected Answer: C

The question says it is unlikely multiple drives will fail. You need multiple drives for Raid 10. I’m gonna go with raid five.

upvoted 3 times

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rline63

1 year, 8 months ago

Raid 10 is the best answer in regards to speed. Raid 5 is however a more affordable option, provides tolerance in the event of a single drive failure (The question says multiple failures are unlikely), and offers only slightly less performance than Raid 10. I would be most likely to recommend raid 5 for these reasons but it seems equally likely 10 is the correct answer to me.

upvoted 1 times

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sujon_london

1 year, 8 months ago

Selected Answer: D

RAID 10 (Combination of RAID 1 and RAID 0): Data is both mirrored and striped across multiple drive pairs. Offers high read and write speeds as well as fault tolerance.

upvoted 2 times

[Removed]

1 year, 3 months ago

RAID 10 typically offers better performance and reliability, especially for critical applications where performance and fault tolerance are paramount.

upvoted 1 times

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