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CompTIA SK0-005 Exam - Topic 4 Question 97 Discussion

An administrator needs to increase the size of an existing RAID 6 array that is running out of available space. Which of the following is the best way the administrator can perform this task?
D) Replace the array drives one at a time and then expand the array.
A) Replace all the array drives at once and then expand the array.
B) Expand the array by changing the RAID level to 6.
C) Expand the array by changing the RAID level to 10.

CompTIA SK0-005 Exam - Topic 4 Question 97 Discussion

Actual exam question for CompTIA's SK0-005 exam
Question #: 97
Topic #: 4
[All SK0-005 Questions]

An administrator needs to increase the size of an existing RAID 6 array that is running out of available space. Which of the following is the best way the administrator can perform this task?

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Suggested Answer: D

RAID 6 is a type of RAID that uses block-level striping with two parity blocks distributed across all member disks.It allows for two disk failures within the RAID set before any data is lost1.A minimum of four disks is requiredto create RAID 61. To increase the size of an existing RAID 6 array, the administrator can replace the array drives one at a time with larger drives and then expand the array.This way, the data and parity are rebuilt on each new drive and the array remains operational during the process2.


by Jacqueline at Aug 15, 2026, 02:25 PM

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Rosenda
3 days ago
B and C don’t make sense for expanding RAID 6.
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Isabella
8 days ago
Wait, can you really change RAID levels like that? Sounds risky!
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Margot
13 days ago
Definitely agree with D, one at a time is the way to go!
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Isabella
19 days ago
I think A could lead to data loss, right?
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Dudley
24 days ago
D is the safest option for RAID 6 expansion.
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Tamie
29 days ago
I’m a bit confused about the expansion process. Is it really okay to replace all drives at once, or does that risk data loss?
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Nan
1 month ago
Changing the RAID level to 10 seems like it would be a bad idea since it would lose the redundancy of RAID 6, right?
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Magdalene
1 month ago
I think I practiced a question similar to this, and I feel like replacing drives one at a time might be safer than doing it all at once.
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Jerilyn
1 month ago
I remember that RAID 6 can handle two drive failures, but I'm not sure about the best way to expand it.
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