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Dell EMC D-XTR-DS-A-24 Exam - Topic 5 Question 17 Discussion

A customer's environment is configured as follows:. Dual X-Brick cluster. 8 ESXi hosts with 2 Emulex HBAs. Each ESXi hosts has 8 LUNs. Each LUN is visible through 4 pathsWhat should be the LUN queue depth setting per path?
C) 256
A) 128
B) 64
D) 1024

Dell EMC D-XTR-DS-A-24 Exam - Topic 5 Question 17 Discussion

Actual exam question for Dell EMC's D-XTR-DS-A-24 exam
Question #: 17
Topic #: 5
[All D-XTR-DS-A-24 Questions]

A customer's environment is configured as follows:

. Dual X-Brick cluster

. 8 ESXi hosts with 2 Emulex HBAs

. Each ESXi hosts has 8 LUNs

. Each LUN is visible through 4 paths

What should be the LUN queue depth setting per path?

Show Suggested Answer Hide Answer
Suggested Answer: C

XtremIO XVC (XtremIO Virtual Copies) allows for efficient snapshot management and operations, including the refresh of volumes. One of the key features of XVC is that it enables the refresh of a production volume from a snapshot without requiring the volume to be unmounted from the host. This capability is designed to minimize disruption and maintain continuous availability of data to applications during refresh operations. The refresh operation is handled within the XtremIO storage array, and the production volume remains accessible to the host during this process1.


The Dell XtremIO Design Achievement document provides information on the capabilities and features of XtremIO X2 systems, including XVC operations1.

Additional details on XVC refresh operations can be found in the support documentation for the XtremIO Family on Dell's official website2.

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by Elouise at Jan 11, 2025, 03:36 AM

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Rolf
8 months ago
Not sure about this, why would you need such a high queue depth?
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Gene
8 months ago
Wait, 1024? That sounds way too high!
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Judy
8 months ago
128 could work too, but I’m leaning towards 64.
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Cecily
8 months ago
Definitely agree with 64, seems optimal for this setup.
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Gertude
8 months ago
I think the LUN queue depth should be 64.
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Rochell
9 months ago
I have a hunch that 1024 is way too high for a single path. I think we should stick to something lower like 64 or 128.
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Kanisha
9 months ago
I feel like 256 might be too high for this environment, but I can't recall the exact reasoning behind it.
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Pearlene
9 months ago
I practiced a similar question last week, and I think the answer was 128. It seems to fit the typical configurations I've seen.
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Tamekia
9 months ago
I remember something about LUN queue depth, but I'm not sure if it's 64 or 128. I think 64 is common for some setups.
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Rolland
9 months ago
Hmm, this is a good one. I'm going to need to review my notes on storage configuration and performance tuning. I think the queue depth setting is going to be important for getting the most out of this setup, so I'll need to be careful in my analysis.
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Leontine
9 months ago
Alright, time to put on my thinking cap. The number of paths and hosts suggests we want a higher queue depth to take advantage of the available resources. But we also don't want to overload the system. I'll need to do some research to find the sweet spot.
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Valentin
9 months ago
I'm not too familiar with this kind of storage setup, but I think the key is to find the right balance between maximizing throughput and avoiding resource contention. Maybe I'll start by looking up some best practices for Emulex HBAs and VMware environments.
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Celestine
9 months ago
Okay, let's see. We have a dual X-Brick cluster, 8 ESXi hosts, 2 Emulex HBAs per host, and 4 paths per LUN. I'm guessing the queue depth setting has to balance performance and resource utilization.
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Youlanda
9 months ago
Hmm, this looks like a tricky one. I'll need to think through the details of the environment and the impact of the queue depth setting.
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Gene
1 year ago
I'm going to go with B) 64. It's the classic queue depth setting - just like the number of beers I'll have after acing this exam!
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Lovetta
1 year ago
A) 128 sounds like a good compromise between performance and resource utilization. I'm pretty sure that's the right answer, though I did once try setting the queue depth to 'over 9000' just for fun.
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Loreen
1 year ago
Hmm, I'm torn between B) 64 and C) 256. I'd need to know more about the specific workload and performance requirements to make a confident choice. Maybe I'll just flip a coin!
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Delbert
1 year ago
User1: Yeah, it's always important to consider workload and performance requirements before making a decision.
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Nikita
1 year ago
User2: I agree, C) 256 seems like a good choice based on the configuration.
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Angelo
1 year ago
User1: I think the LUN queue depth setting should be C) 256.
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Leonard
1 year ago
D) 1024 seems too high for this environment. That kind of queue depth is more suitable for large-scale storage systems with extensive I/O requirements. I'd go with the more conservative B) 64 setting.
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Aleta
1 year ago
A: Yeah, 64 should be sufficient for the current configuration.
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Willodean
1 year ago
B: I think 64 would be a safer choice for the LUN queue depth.
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Jame
1 year ago
A: I agree, 1024 seems excessive for this setup.
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Nidia
1 year ago
I think the correct answer is B) 64. The default queue depth setting is usually 64, and with a dual X-Brick cluster and 4 paths per LUN, this should provide adequate performance without overloading the storage system.
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Kathrine
1 year ago
That makes sense, we don't want to overload the storage system.
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Domingo
1 year ago
So the correct answer is B) 64.
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Davida
1 year ago
With 4 paths per LUN, that should provide adequate performance.
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Rashida
1 year ago
I agree, the default queue depth setting is usually 64.
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Kristofer
1 year ago
I agree with Wenona, 256 seems like the right choice considering the configuration.
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Wenona
1 year ago
I disagree, I believe it should be 256 to handle the high number of paths and LUNs.
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Lettie
1 year ago
I think the LUN queue depth setting per path should be 128.
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