Dell EMC Exam D-XTR-DS-A-24 Topic 5 Question 2 Discussion

Actual exam question for Dell EMC's D-XTR-DS-A-24 exam

Question #: 2
Topic #: 5

When creating XtremlO volumes for a host, which operating systems will benefit by changing the default logical block size for applications consisting of 4 KB I/Os?

AVMware ESX and Microsoft Windows

BRHEL and IBM AIX

CSun Solaris and HP-UX

DMicrosoft Windows and RHEL

Show Suggested Answer

Suggested Answer: A

When creating XtremIO volumes for a host, operating systems like Microsoft Windows and RHEL (Red Hat Enterprise Linux) will benefit from changing the default logical block size to better match applications that consist of 4 KB I/Os. This is because these operating systems are commonly used with applications that have a 4 KB I/O size, and aligning the logical block size with the application I/O size can improve performance by reducing the need for read-modify-write cycles.

For instance, in Windows environments, the NTFS file system often uses a default cluster size of 4 KB, which aligns well with a 4 KB logical block size. Similarly, for RHEL, the Ext4 file system can be configured with a 4 KB block size, which is a common setting for many Linux-based applications12.

Discussions on Dell Technologies community forums indicate that changing the logical block size can prevent issues with unaligned I/O and is part of a larger configuration strategy for optimizing storage performance3.

The Reference Architecture Guide for Dell EMC XtremIO documents mention using a block size of 64 KB for database data and log file drives after the installation of the operating system in the VMs, for Windows and RHEL operating systems respectively12. This suggests that the block size is an important consideration for performance tuning in these environments.

by Haydee at Aug 04, 2024, 09:39 AM

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Ilene

6 months ago

Wait, is this a trick question? I'm just going to go with option D and hope for the best. It's gotta be Windows and RHEL, right?

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Shelton

5 months ago

I agree, let's go with D. Windows and RHEL.

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Joseph

5 months ago

I'm not sure, but I'll go with option D too. Microsoft Windows and RHEL.

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Leslee

5 months ago

Yeah, I agree. Let's go with option D.

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Rosita

6 months ago

I think it's VMware ESX and Microsoft Windows.

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Sage

6 months ago

I think it's Windows and RHEL too.

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Alaine

6 months ago

This question is a real head-scratcher, but I'm leaning towards option B. RHEL and IBM AIX seem like the logical choices here.

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Alva

5 months ago

It's a tough decision, but I think we can all benefit from considering different operating systems for this change.

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Ilona

5 months ago

I see your point, but I still think option B) RHEL and IBM AIX are the best choices for this scenario.

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Mitsue

6 months ago

I agree, but I believe option D) Microsoft Windows and RHEL could also see improvements with the change.

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Dominga

6 months ago

I think option A) VMware ESX and Microsoft Windows could also benefit from changing the default logical block size.

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Aliza

7 months ago

Hold up, I'm pretty sure it's option C. Sun Solaris and HP-UX are the ones that need to change the block size for 4 KB I/Os.

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Larae

6 months ago

I'm not sure, but I think Microsoft Windows and RHEL are the ones that need the block size change.

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Annice

6 months ago

I think you might be right, Sun Solaris and HP-UX could benefit from changing the block size.

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Ma

7 months ago

I believe the correct answer is A) VMware ESX and Microsoft Windows because they are commonly used with XtremIO.

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Krissy

7 months ago

I'm not sure, but I think B) RHEL and IBM AIX could also benefit from changing the block size.

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Ozell

7 months ago

Hmm, I'm going with option A. VMware ESX and Windows should be the ones that benefit from this change.

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Carlee

7 months ago

I think option D is the correct answer. Windows and RHEL can benefit from changing the default logical block size for 4 KB I/Os.

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Gwen

6 months ago

I believe RHEL and IBM AIX would be the best choice for changing the default logical block size.

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Ezekiel

6 months ago

I think VMware ESX and Microsoft Windows could also benefit from changing the default logical block size.

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Catarina

6 months ago

I agree, Windows and RHEL are the operating systems that will benefit from changing the default logical block size.

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Joni

7 months ago

I agree with Curtis, changing the logical block size will benefit those operating systems.

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Curtis

7 months ago

I think the answer is A) VMware ESX and Microsoft Windows.

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