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Hitachi Vantara HCE-3700 Exam - Topic 3 Question 3 Discussion

DP-Vol LUNs are taken from an HDP pool deployed with 128 disks (16x4D+4D RAID groups). Access is random read.Which combination of FC paths, LUN Queue Depth, and number of DP-Vols will result in a per-disk queue of 4 within this pool?
D) 4 paths, a LUN Queue Depth of 16, and 32 DP-Vols
A) 2 paths, a LUN Queue Depth of 16, and 32 DP-Vols
B) 2 paths, a LUN Queue Depth of 8, and 32 DP-Vols
C) 4 paths, a LUN Queue Depth of 8, and 32 DP-Vols

Hitachi Vantara HCE-3700 Exam - Topic 3 Question 3 Discussion

Actual exam question for Hitachi Vantara's HCE-3700 exam
Question #: 3
Topic #: 3
[All HCE-3700 Questions]

DP-Vol LUNs are taken from an HDP pool deployed with 128 disks (16x4D+4D RAID groups). Access is random read.

Which combination of FC paths, LUN Queue Depth, and number of DP-Vols will result in a per-disk queue of 4 within this pool?

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Suggested Answer: D

by Jennifer at May 03, 2022, 05:46 AM

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Nan
8 months ago
Wait, how can we get a per-disk queue of 4 with those numbers? Sounds off!
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Alecia
9 months ago
D seems too high for the queue depth, not sure about that one.
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Kimberely
9 months ago
C looks good too, but 4 paths might be overkill.
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Detra
9 months ago
I think B is the right choice, 8 seems more balanced.
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Corinne
9 months ago
Option A gives a LUN Queue Depth of 16 with 32 DP-Vols.
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Tora
9 months ago
I feel like I might be overthinking this. I remember that more paths can help with load balancing, but I’m not sure if 4 paths is necessary for this scenario.
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Kasandra
9 months ago
If I remember correctly, to get a per-disk queue of 4, we need to consider the total queue depth divided by the number of disks. I think option B might be close.
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Cletus
9 months ago
I think I practiced a similar question where we had to balance paths and queue depth, but I can't recall the exact numbers.
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Franchesca
9 months ago
I remember something about calculating the per-disk queue based on paths and queue depth, but I'm not sure how to apply it here.
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Cheryll
9 months ago
I'm a bit confused by the options here. Can someone explain the differences between these Action Plan Types? I want to make sure I choose the correct one.
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Herman
9 months ago
I'm pretty sure the answer is A - storing environment settings in config files. That's the standard best practice, right?
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Hubert
9 months ago
I'm a bit torn on this one. While it does seem like a communication issue, I wonder if there could also be some distortion of the facts happening, where the cleaners misunderstood or misremembered the contract requirements. I might have to go with C - distortion of the facts, but I'm not 100% sure.
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Margot
10 months ago
I think if it can't match a user-defined policy, it might apply the global policy, but I'm not entirely sure.
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