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Question 19

Refer to the exhibit.

During a requirements gathering workshop, the customer shares the following about their existing ESXi host virtual networking infrastructure:

The customer confirms that:

✑ Each ESXi host has approximately 200 virtual machines.

✑ They want to maximize the number of concurrent virtual machine migrations.

✑ When placing a host in maintenance mode, it takes a long time to evacuate the virtual machines.

Which two recommendations should the architect make in order to help the customer overcome their challenge? (Choose two.)

    Correct Answer: B, E

    To overcome the challenge of long evacuation times when placing a host in maintenance mode and to maximize the number of concurrent virtual machine migrations, two primary actions should be considered. First, configuring the network to use MTU for the VMotion VMKernel to 9,000 bytes, also known as using jumbo frames, can significantly enhance vMotion performance by allowing larger data packets, which reduces the overhead involved in packet processing. Second, using 10 GbE NICs instead of 1 GbE NICs will provide much higher bandwidth, allowing for more simultaneous vMotion processes and faster data transfer rates. This will directly address the customer's needs by increasing the number of concurrent migrations and speeding up the evacuation of virtual machines during maintenance.

Discussion
AletzzissOptions: BC

B&C E is a recommendation but is an assumption to think they have budget "Use jumbo frames for best vMotion performance" https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-7DAD15D4-7F41-4913-9F16-567289E22977.html

estornudoOptions: BE

I'd say B and E

nemisis95

10GBE is not a requirement for vMotion. vMotion network has at least 250 Mbps of dedicated bandwidth per concurrent vMotion session. https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-3B41119A-1276-404B-8BFB-A32409052449.html We use C, to create an additional vSwitch with dedicated 1GB/ps network

shav007

but using 10gbe increases the concurrent migration to 8 from 4 which is also the client requirement - ''they want to maximize the number of concurrent virtual machine migrations''

EW3772

Refer to your link: You MUST ENSURE that the vMotion network has at least 250 Mbps of dedicated bandwidth per concurrent vMotion session. Greater bandwidth lets migrations complete more quickly. it is you must provide vMotion network at least 250Mbps, not vMotion network has at least 250Mbps.

VCIX_Chris

Why an additional Switch for multi-nic-vmotion? An additional vmkernel would be sufficient.

andr3Options: BE

so they are asking you for two recommendations: "Which two recommendations should the architect make..." recommendation is always to use 10GB net over 1GB and Jumbo frames for vMotion ANS: B E

AlchotOptions: BE

There is no constrain saying customer does not have budget or must use exisiting hardware. Assumption are being made that should be cleared by asking the questions. Therefore 10GbE network and Jumbo frames can be recommended. During design workshop customer can confirm if network fabric speed, free ports and budget for cables, NICs. If these then become constrains. LACP and Jumbo Frames can be recommended. NIOC should be also part of this question. IN MY OPINION

Akhi69Options: BE

B&E C is talking about creating a new vSS which means that we cannot use multi-nic vmotion because the second switch will not see the nic used by the first vSS ? Am i wrong ?

OlekPLOptions: BC

B&C, Best option on my opinion. We do not have info in exhibit about 10 GBE NICs.

mvojka1990Options: BC

LACP negotiating mode of the LAG has one active and one passive nic as by default. Here is the need for recommendations to overcome the challenge, not to have idela config, so, having jumbo is the first recommended move and second, dedicate one other pnic to use vmotion capabilities, seems to B and C.

MegalodonOptions: BE

Question states to maximize number of concurrent migrations, so 10 Gbs is best. C can also increase vmotion performance because of dedicated nic but no so much.

FR_WolfmanOptions: BE

BE are the right answer. A >> Changing the MTU from 1500 to 1600 won't help in anything B >> Switch to jumbo frames (MTU 9000) is one of the recommendations to improve vMotion performances (it works with vSAN too) C >> Creating a new standard switch and moving the vMotion to it won't help in anything D >> Aggregating the uplinks won't help, the vMotion parallelization with stays stuck at 4 VMs E >> Switching to a 10Gb network will push the limit from 4 VMs to 8 VMs moved in parallel.

guille804Options: BE

For me B&E. Ya que C dice: Crear un adicional standar switch y la teoria dice que debe ser al mismo vss o vsd. vMotion con varias NIC: Puede configurar varias NIC para vMotion si agrega dos o más NIC al conmutador distribuido o estándar que se requiera. Para obtener información detallada, consulte el artículo de la base de conocimientos KB 2007467.

safodzOptions: BC

B & C of course ; E is out of subject her the host are configured with onle 01Gbe network

hicallOptions: BE

B and E

Bobob55Options: BE

B and E. as that increases number of concurrent vmotions

spamOptions: CE

vMotion Best Practices The following are best practices when using vMotion: • Consider using a 10GbE vMotion network. Using a 10GbE network in place of a 1GbE network for vMotion will result in significant improvements in vMotion performance. When using very large virtual machines (for example, 64GB or more), consider using multiple 10GbE network adaptors for vMotion to further improve vMotion performance. https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-vmotion-performance-vsphere5.pdf

spam

10gb ethernet uses a default MTU of 9000

tuvituvi

No. it depends on the vmkernel config

GarbageOptions: BE

B & E. 10Gb maximizes the amount of bandwidth, as well as increases the number of potential simultaneous vmotions.

anisss21Options: BD

C is not a valid option since it will be simply a replacement for current PNIC, be careful with the proposed solution which is a new standard switch . I would recommend Jumbo frame and aggregation

eric_jungOptions: CE

Is there any way to scale the maximum number of migrations of virtual machines other than adding 10Gb NICs? Also, there is no condition on whether or not it can be used for the additional budget. Aren't the best answers that satisfy the conditions C,E?