Oracle Exam 1Z0-821 Topic 2 Question 105 Discussion

Actual exam question for Oracle's 1Z0-821 exam

Question #: 105
Topic #: 2

[All 1Z0-821 Questions]

Your server has a ZFS storage pool that is configured as follows:

The following partition scheme is used for every disk drive in pool1:

Which two are true regarding the ZFS storage pool?

AThe data on c3t3d0 is duplicated on c3t4do.

BThe data is striped across disks c3t3d0 and c3t4do and mirrored across vdevs mirror-0 and mirror-1.

CThe storage pool is 146 GB total size (rounded to the nearest GB).

DThe storage pool is 584 G8 total size (rounded to the nearest GB).

EThe storage pool is 292 GB total size (rounded to the nearest GB).

Show Suggested Answer

Suggested Answer: A

https://docs.oracle.com/cd/E23824_01/html/E21798/glitd.html#scrolltoc

http://docs.oracle.com/cd/E23824_01/html/E21798/glitd.html#aizoneconf

by Karan at Mar 06, 2025, 04:44 PM

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Denna

1 months ago

ZFS, the storage system that's as mysterious as the Bermuda Triangle. I'm going to guess D - the storage pool is 584 GB total size. Why? Because 584 GB sounds like a nice, round number, and that's the kind of answer these questions love to throw in!

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Glory

3 days ago

B) The data is striped across disks c3t3d0 and c3t4do and mirrored across vdevs mirror-0 and mirror-1.

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Valentine

1 months ago

A) The data on c3t3d0 is duplicated on c3t4do.

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Gilberto

2 months ago

Ah, ZFS, the gift that keeps on giving! I reckon the right answer is B - the data is striped across the disks and mirrored across the vdevs. That's the only way it makes sense given the partition scheme.

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Alton

14 days ago

Definitely, option B is the most logical choice here.

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Rebecka

24 days ago

Yeah, it makes sense that the data would be striped across the disks and mirrored across the vdevs.

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Reena

25 days ago

I agree, option B seems to be the correct one based on the partition scheme.

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Darnell

2 months ago

Ha, these ZFS questions always try to catch you out! I'm pretty sure the correct answer is C - the storage pool is 146 GB total size. The partition scheme shows each disk is 146 GB, so with just two disks, the total size should be 146 GB.

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Andra

2 months ago

Hmm, this is a tricky one. I'm going to go with E - the storage pool is 292 GB total size. The partition scheme suggests the disks are each 146 GB, and there are two of them, so the total size should be 292 GB.

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Gracia

13 hours ago

User1: Looks like it. E - the storage pool is 292 GB total size.

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Shantay

9 days ago

User3: So, we all think E is the correct answer then?

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Franklyn

16 days ago

User2: Agreed. It makes sense that the total size is calculated based on the individual disk sizes.

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Lonny

17 days ago

User1: I think E is correct too. The total size should be 292 GB based on the partition scheme.

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Lorrie

2 months ago

This looks like a trick question. The data is striped across the disks, but it's not mirrored - there's only one copy of the data. I think the correct answer is C.

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