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Dell EMC D-XTR-DS-A-24 Exam - Topic 4 Question 20 Discussion

You are connecting a Linux host to an XtremlO array. The host will be connected to the array using the QLogic HBA's. Based on the recommended best practice, what is thevalue for the queue depth?
C) 1024
A) 256
B) 128
D) 8192

Dell EMC D-XTR-DS-A-24 Exam - Topic 4 Question 20 Discussion

Actual exam question for Dell EMC's D-XTR-DS-A-24 exam
Question #: 20
Topic #: 4
[All D-XTR-DS-A-24 Questions]

You are connecting a Linux host to an XtremlO array. The host will be connected to the array using the QLogic HBA's. Based on the recommended best practice, what is the

value for the queue depth?

Show Suggested Answer Hide Answer
Suggested Answer: C

The Dell XtremIO X2 optimizes I/O handling internally using a block size of 64 kB. This block size is a part of the system's architecture that allows for efficient data management and optimization for performance. The XtremIO X2 Storage Array automatically reduces (deduplicates and compresses) data on the fly, as it enters the system, in granular data blocks1. While the specific block size used for these operations is not explicitly stated in the search results, the reference to granular data blocks and the context of storage array operations suggest that 64 kB is a commonly used block size for such optimizations.


Introduction to XtremIO X2 Storage Array document1.

Support documentation for XtremIO Family on Dell's official website2.

=========================

by Skye at Mar 06, 2025, 07:22 AM

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Carol
9 months ago
I’ve always used 128, but maybe I should reconsider.
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Frank
9 months ago
Wait, 8192? That sounds excessive, right?
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Holley
9 months ago
1024 seems way too high for most setups.
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Inocencia
10 months ago
Definitely agree, 256 is the sweet spot!
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Johnna
10 months ago
I think the queue depth should be 256.
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Jannette
10 months ago
I thought I read somewhere that 8192 is excessive for queue depth, but I can't remember the exact reasoning behind it.
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Erick
10 months ago
I feel like 1024 is too high for a queue depth in this context, but I might be mixing it up with other configurations we studied.
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Miriam
10 months ago
I remember practicing a similar question where the queue depth was 128, but I can't recall if that was for a different type of HBA.
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Shawn
11 months ago
I think the queue depth is usually around 256 for most setups, but I'm not completely sure if that's the best practice for this specific array.
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Kimberely
11 months ago
Ah, I remember this from the lab exercises we did! The recommended queue depth for QLogic HBAs connecting to an XtremlO array is 256. I'm pretty confident that's the correct answer based on the best practices we covered in class.
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Emilio
11 months ago
Hmm, I'm a bit stumped on this one. I know queue depth is important for storage performance, but I can't recall the exact recommended value off the top of my head. I'll have to think it through step-by-step and try to reason my way to the right answer.
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Laurel
11 months ago
Okay, let's see here. The question mentions "recommended best practice", so I'm guessing there's a specific value we're supposed to know. I'll try to recall what we learned about optimizing queue depth for storage arrays.
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Eulah
11 months ago
Ugh, I'm not too familiar with this XtremlO array stuff. I know we covered HBAs in class, but I can't quite remember the recommended queue depth settings. Guess I'll have to think this through carefully.
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Marci
11 months ago
Hmm, this seems like a pretty straightforward question about queue depth settings for a Linux host connecting to an XtremlO array. I think I've seen this topic covered in the course materials, so I should be able to handle this.
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Bulah
1 year ago
Wait, is this a trick question? What if the answer is... the number of stars in the universe? Hmm, I'll go with 8192 just to be safe.
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Lashaunda
1 year ago
Hold on, let me consult my crystal ball... Aha! The answer is C, 1024. Trust me, I'm an expert.
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Theron
1 year ago
I trust your expertise, so I'll go with C) 1024 for the queue depth.
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Candida
1 year ago
I've heard that the recommended value is B) 128. Maybe double-check?
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Fredric
1 year ago
I'm pretty confident it's D) 8192. That's the best practice.
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Kristian
1 year ago
Are you sure about that? I think the answer is A) 256.
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Tonja
1 year ago
Wouldn't it be funny if the answer was over 9000? Anyway, I think 128 is the way to go.
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Joanna
1 year ago
User 3: Yeah, 128 is the way to go for QLogic HBA's.
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Lea
1 year ago
User 2: I agree, 128 is the recommended value.
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Ashleigh
1 year ago
User 1: I think the queue depth should be 128.
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Sherita
1 year ago
1024 seems like a good balance between performance and stability. I'll go with that.
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Lang
1 year ago
1024 seems like a good balance between performance and stability. I'll go with that.
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Gianna
1 year ago
D) 8192
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Mabel
1 year ago
C) 1024
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Irma
1 year ago
B) 128
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Whitney
1 year ago
A) 256
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Tarra
1 year ago
Hmm, 8192 seems like a lot. I'm going with the more conservative option of 256.
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Weldon
1 year ago
I'm leaning towards 1024 for better performance.
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Jeff
1 year ago
I would go with 128 just to be on the safe side.
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Ressie
1 year ago
I agree, 8192 does seem like a lot.
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Clay
1 year ago
I think 256 is a safe choice.
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Maybelle
1 year ago
I see your point, but I still think 256 is the best option based on the best practice guidelines.
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Alva
1 year ago
I disagree, I believe it should be 1024 for better performance.
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Maybelle
1 year ago
I think the recommended queue depth value is 256.
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