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Question 6

A vSphere cluster has the following configuration:

Virtual machines (VMs) are running Production and Test workloads vSphere Distributed Resource Scheduler (DRS) is enabled

There are no resource pools in the cluster

Performance monitoring data shows that the Production workload VMs are not receiving their fully allocated memory when the vSphere cluster is fully utilized.

A combination of which two steps could the administrator perform to ensure that the Production VMs are always guaranteed the full allocation of memory? (Choose two.)

    Correct Answer: B, C

    To ensure the Production VMs are always guaranteed the full allocation of memory in a vSphere cluster, the administrator should first create a parent resource pool for the Production VMs. This allows for the organization and prioritization of resources specifically for those VMs. Then, by assigning a memory reservation value to the resource pool containing the Production VMs, the administrator can ensure that a specific amount of memory is reserved exclusively for these VMs, preventing other VMs in the cluster from using it. These steps together guarantee the necessary memory allocation for the Production VMs.

Discussion
michael24Options: BC

BC: You guarantee resources by setting a reservation on the pool. You cannot set a reservation on a pool that doesn't exist, so voting BC.

michael24

I ended up selecting D & A based on another article on VMware website. Passed with 428.

lafegob

which article man ?

calibra

A is about shares, a percentage shared, no guarantees. Reservation are the only way to guarantee resources. B would be my pick next the question only talks about production, it does not talk about guarantying resources to test. The minimum to complete would be C

Joaquinoo

Yes, but if you set High shares, then the percentage is High... What about adding a new host? Or adding new VMs to the pool? A percentage-based approach seems better in my opinion. If the vSphere DRS Cluster is at its full capacity, then the Production Pool will have high resource allocation in comparison to the Testing Pool. About C or D: When you have DRS On, the cluster becomes a parent pool (invisible root resource pool) of all the pools below, so if you have your Test VMs outside a child pool, they will inherit the resource allocation from the Cluster, which is going to be hierarchically bigger than Production VMs Pool. So yeah, I think A & D should be right. https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html

elekgeek

reservation is amount, share are ratio... so answer is BC

elekgeek

Selected Answer: BD I have dug deeper in this, question is NOT about shares for resource pool with respect to the parent’s total resources. Sibling resource pools share resources according to their relative share values bounded by the reservation and limit. BUT, question mentions allocation, hence a guaranteed CPU or memory allocation for this resource pool, the resources are considered reserved, regardless of whether virtual machines are associated with the resource pool. https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html

pennegaOptions: BD

I thinc the correct is BD https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html

bugpr0beOptions: BD

Parent is the root folder, hence the pool will be taken as sibling

JoaquinooOptions: AD

I think it's better to work with shares than reservation in this scenario. What about adding a new host? What about upgrading the host's hardware? Or even adding new VMs to the pool? A percentage-based approach seems better in my opinion, as it is dynamic. The reservation is going to be a static value for each resource in the pool. If the vSphere DRS Cluster is at its full capacity, then the Production Pool will have higher resource allocation in comparison to the Testing Pool. About C or D (Creating one Prod Pool or one Pool for each group of VMs): When you have DRS On, the cluster becomes a parent pool of all the pools below (invisible root resource pool), so if you have your Testing VMs outside of the Testing Pool, they will inherit the resource allocation from the Cluster, which is going to be hierarchically bigger than Production VMs Pool. That's why you should create 2 different pools in my opinion. So yeah, I think A & D should be right. https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html

PD2024Options: BC

https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-14102AB7-2CF9-42E3-9642-3EB6629EF530.html B - a memory reservation guarantees resources. C - a parent resource pool needs to be created for the production VMs as it does not exist. Shares do not guarantee resources, so wouldn't think that would be the correct answer, though it would still help setting shares too.

MA_Vee2Options: BC

BC: the question says the pool doesn't exist. you first need to create the resource pool then reserve.

slizlaOptions: BC

Please, read the question carefully: There are no resource pools in the cluster. A combination of which two steps.... You must first create parent resource pool for production VMs in cluster - answer is C Then you must Assign a memory reservation value to the resource pool containing the Production VMs - answer is B Answer is BC

Bert_77Options: BD

https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html#:~:text=The%20resource%20pools%20at%20a,the%20root%20resource%20pools%20exist

faisalishaqOptions: BD

I agree BD. Questions asks guarantee so have to provide fix amount B, 2nd option is by default there is a parent pool any pool we create are Sibling , hence we need to create two sibling poos option D, definitely BD

CharlesTrOptions: BD

Answer is DB. IMO. B - because we want a reservation D - because the default "invisible" resource pool is a parent. Meaning when you create a manual resource pool it is automatically a sibling. "Each standalone host and each DRS cluster has an (invisible) root resource pool that groups the resources of that host or cluster. The root resource pool does not appear because the resources of the host (or cluster) and the root resource pool are always the same. Users can create child resource pools of the root resource pool or of any user-created child resource pool. Each child resource pool owns some of the parent’s resources and can, in turn, have a hierarchy of child resource pools to represent successively smaller units of computational capability. " https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html

taka21Options: BC

普通にBCだと思う

FlipTrip

The question states that there are no resource pools. My guess would be CE.

FR_WolfmanOptions: BC

We only want to guarantee resources for the Production VMs, the subject does not care about allocation of resources for Test VMs : so a single resource pool is sufficient. As we will have a single resource pool, it is a Parent. --> Answer C The only to ALWAYS guarantee resources, is to set a reservation --> so Answer B.

XinluOptions: BC

I think the type of parent, sibling, child is simply based on hierarchy. "Resource pools and virtual machines that are at the same level are called siblings. " Said so in this Doc. https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-60077B40-66FF-4625-934A-641703ED7601.html#:~:text=A%20resource%20pool%20can%20contain%20child%20resource%20pools%2C,The%20cluster%20itself%20represents%20the%20root%20resource%20pool.

Lundu1995Options: AD

Ill go with A &D if you create a two RPs and set one with higher shares its the result that if contention occurs, the RP with more shares gets more power. A&D is more practical because its more dynamic but still gurantee the highest level of performance in the RP with more share if contention occurs.

gorotOptions: BC

BC To ensure that the Production VMs are always guaranteed the full allocation of memory in a vSphere cluster, you can perform the following steps: B. Assign a memory reservation value to the resource pool containing the Production VMs. By setting a memory reservation for the resource pool containing the Production VMs, you ensure that a specific amount of memory is reserved exclusively for these VMs, and it won't be used by other VMs in the cluster, even when the cluster is fully utilized. C. Create a parent resource pool for the Production VMs. Creating a parent resource pool for the Production VMs allows you to prioritize the allocation of resources to VMs within that pool. You can then set resource allocation policies for the parent resource pool to ensure that the Production VMs get the necessary resources.

ChocolateNagaViperOptions: BC

If you are unsure, read this: https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-60077B40-66FF-4625-934A-641703ED7601.html#:~:text=The%20resource%20pools%20at%20a,the%20root%20resource%20pools%20exist It's pretty obvious what is correct after reading the article.

Bert_77

Looking at your article, a parent resource pool should have a child, so C does not look correct. I would go for B + D