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Question 24

An architect is designing storage for a new vSphere environment to meet the following requirements:

✑ Asynchronous replication is required between two sites.

✑ The impact on the storage layer should not impact the performance of the compute layer.

✑ Each application tier will require different replication attributes.

✑ Virtual machine live migration across compute and storage must be supported.

✑ Virtual machine aware back up will be leveraged.

✑ Operational management overhead should be minimized.

✑ Operational automation should be supported.

Which storage design recommendations would meet the requirements?

    Correct Answer: D

    Two new storage arrays will be deployed, one at either site. vSphere Volumes (vVOLs) will be used to provide policy-based management for each application tier. Data replication will be offloaded to the new arrays. This setup meets the requirements of asynchronous replication, reducing impact on the compute layer, supporting different replication attributes for each application tier, enabling live migration across compute and storage, leveraging virtual machine aware backups, minimizing operational management overhead, and supporting operational automation.

Discussion
primanturinOption: D

Changing to D - vVOLs vVOLs accomplish each one of the requirements, but specially this one: "Virtual machine aware back up will be leveraged" Here references: Replication -> https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-6346A936-5084-4F38-ACB5-B5EC70AB8269.html https://dyertribe.co.uk/2020/05/04/vvol-replication-with-nimble/ https://support.purestorage.com/Solutions/VMware_Platform_Guide/User_Guides_for_VMware_Solutions/Virtual_Volumes_User_Guide/vVols_Deep_Dive%3A_Array_Based_Replication_with_vVols Aware backup -> https://documentation.commvault.com/commvault/v11/article?p=14307.htm https://www.nakivo.com/blog/application-aware-vm-backup/ "The impact on the storage layer should not impact the performance of the compute layer." VSAN will have an important impact of compute layer. "Operational management overhead should be minimized" >> FC Additional management overhead (e.g. switch zoning)

nefini

I think your right. vSAN would fit but the fact that storage must not impact compute layer makes it a worse awnser than vvols.

nemisis95Option: B

I suppose B

rajeshrubOption: B

It shall be B. A and C are ruled out. D can't be because vvol requires a certified storage array for replication. A, C ,D will have impact on compute performance due to some challenge on storage.

AlchotOption: D

Changing to D ✑ Asynchronous replication is required between two sites. Offloaded to the array ✑ The impact on the storage layer should not impact the performance of the compute layer. Array has dedicated compute power ✑ Each application tier will require different replication attributes. ✑ Virtual machine live migration across compute and storage must be supported. Supported in vvols ✑ Virtual machine aware back up will be leveraged. Selected solution must support vvols ✑ Operational management overhead should be minimized. vvols ✑ Operational automation should be supported. vvols

c11Option: D

I think it's D. vVOL.

lifeflakesOption: D

It should be D, based on the following requirement - Each application tier will require different replication attributes. vVol provides this. Also vSAN would be ruled out, because the impact of performance on Storage layer should not have impact on Compute layer.

JLF_VMWOption: A

I read this: https://docs.vmware.com/en/vSphere-Replication/8.4/com.vmware.vsphere.replication-admin.doc/GUID-1FF815EB-80DC-401B-AD0E-0898255DE624.html and vSAN with vsphere replication has some limitations. I think to work with vsan is better think in a stretched cluster, but for this solution, i think A is better option.

primanturinOption: B

I am in doubt between A and B "The impact on the storage layer should not impact the performance of the compute layer." Why vSAN is better than FC in this case? This is actually a reason why to take FC over vSAN. For example, anytime a host goes down for any reason such as maintenance mode, etc, we will loss compute performances on our vSAN cluster. "Operational management overhead should be minimized" >> FC Additional management overhead (e.g. switch zoning) - In this case, vSAN is clearly better. Both answers cover the rest of the requirements. So... why do I believe the answer is B? Because it is a VMware exam and in case of doubt the right answer will be a full VMware solution. And probably because vSphere replication is a better way to keep everything working and running from both sides and with a more reduced downtime. Don't know, what do you think?

hansel

My initial thoughts were A as FC arrays with replication meet all requirements and better addresses "The impact on the storage layer should not impact the performance of the compute layer." but after re-reading "Each application tier will require different replication attributes." perhaps B with vSAN is a better choice. Although could argue that A better achieves "Operational management overhead should be minimized" - replication is achieved on the arrays there is no need to manage vSphere replication...are we talking about management overhead being minimized for storage admins or vSphere admins?

primanturin

"...designing storage for a new vSphere environment.." I think they are asking about "management overhead being minimized for storage admins". I this case vSAN better than FC

hansel

VMware vRealize Orchestrator Plug-In for vSphere Replication is able to meet the requirement of "Operational automation should be supported." https://docs.vmware.com/en/vSphere-Replication/8.4/com.vmware.vsphere.replication-vro.plugin.doc/GUID-AF14DCEB-8153-4D31-B238-33E4819B678C.html B seems to be the best fit

cloud29

The impact on the storage layer should not impact the performance of the compute layer vSAN can eat around 25-30% of your CPU so B is wrong.

andy33Option: A

I think A

amgiceOption: B

Shoul be B

FR_WolfmanOption: D

Answer D. To have different replication attributes at the application level (or VM level), the only options to do this are vSAN and vVols. As we need the storage layer to not impact the compute layer, we can eliminate answer B (vSAN).

AlchotOption: A

Array capability ✑ Asynchronous replication is required between two sites.
 ISCSi configuration can be part of host profile ✑ Operational management overhead should be minimized.
 Array capability ✑ Each application tier will require different replication attributes. 
Supported ✑ Virtual machine live migration across compute and storage must be supported.
Supported ✑ Virtual machine aware back up will be leveraged.
Host profiles, PoweCLI covers this ✑ Operational automation should be supported.

unofficial_officialOption: D

first thought was B or D, but the requirements include "Operational automation" Must be D: https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/products/virtualvolumes/vmw-vsphere-virtual-volumes-vvolvs-solution-overview.pdf

HelpinghanditexamsOption: A

Correct Answer : A

ugurgazi

Because?

estornudo

Not sure...