Nutanix NCP-MCI-6.5 Practice Test - Questions Answers, Page 16

According to the web search results, the two actions that the administrator should perform to determine if the current cluster can accommodate the new VMs are:

Utilize Optimize Resources for VM efficiency: Optimize Resources is a feature in Prism Central that helps the administrator improve the efficiency and performance of their VMs by identifying and resolving issues such as overprovisioning, inactivity, constraints, or bullying3.By using Optimize Resources, the administrator can reclaim unused resources and optimize the resource allocation for their VMs3.

Determine utilization with Cluster Runway: Cluster Runway is a feature in Prism Central that helps the administrator estimate how long their cluster can continue to run normally based on the current consumption rate of CPU, memory, and storage resources4.By using Cluster Runway, the administrator can see how adding more VMs will affect the resource utilization and capacity of their cluster4.

According to the web search results, the two impacts on the cluster that will result from increasing the vCPU count on all of the VDI VMs are:

Increase CPU utilization%: CPU utilization is the percentage of time that a CPU is busy executing instructions5.By increasing the vCPU count on all of the VDI VMs, the administrator will increase the demand for CPU resources on the cluster, which will increase the CPU utilization percentage6.

Increase CPU ready%: CPU ready is the percentage of time that a vCPU is ready to run but is waiting for a physical CPU to become available5.By increasing the vCPU count on all of the VDI VMs, the administrator will increase the contention for physical CPU resources on the cluster, which will increase the CPU ready percentage6.A high CPU ready percentage can indicate performance issues such as latency or slowdowns5.

According to the web search results, two steps that should be taken to prepare for relocating an AHV cluster to a new datacenter during a maintenance window are:

Shut down all user VMs in the cluster: This step is necessary to ensure that there is no data loss or corruption during the relocation process.The user VMs can be shut down either individually or in bulk by using the Prism Element web console or the acli command-line interface1.

Stop all Nutanix Files clusters: If the AHV cluster hosts any Nutanix Files clusters, they should be stopped before relocating the cluster. Nutanix Files clusters are composed of one or more virtual machines that provide file services to clients.Stopping a Nutanix Files cluster will stop all the file server VMs and release the resources they consume2.The Nutanix Files clusters can be stopped by using the Prism Element web console or the ncli command-line interface3.

According to the web search results, one possible cause of inter-VM communication failure between hosts is that the switch is not configured to allow VLAN 15 traffic. VLAN 15 is the default VLAN ID used by AHV for internal communication between CVMs and hosts.If the switch blocks or drops VLAN 15 packets, it will prevent inter-VM communication across hosts4. To enable full inter-VM communication, the administrator should update the switch to specifically allow VLAN 15 traffic on the ports connected to the AHV hosts.

According to the web search results, one recommended configuration change to improve throughput for a custom backup application that requires a 2TB disk and runs on Windows is to span the 2TB disk across four vDisks. Spanning is a technique that allows you to create a single logical disk from multiple physical disks.Spanning can improve throughput by distributing I/O requests across multiple disks and reducing contention5. To span a disk across four vDisks, the administrator should create four vDisks of equal size (500 GB each) and attach them to the VM.Then, in Windows Disk Management, create a spanned volume from the four vDisks and format it as NTFS6.

According to the web search results, three storage optimizations that should be set on a dedicated storage container for a VDI solution with persistent desktops are compression, deduplication and erasure coding. Compression is a technique that reduces the size of data by removing redundant information. Deduplication is a technique that eliminates duplicate copies of data blocks and stores only unique blocks.Erasure coding is a technique that increases usable capacity by reducing the replication factor of data blocks and using parity information instead7.These three optimizations can improve performance and save storage space for VDI workloads, especially during a node failure event when data needs to be rebuilt from parity information8.The administrator can enable these optimizations by using Prism Element web console or ncli command-line interface9.

https://portal.nutanix.com/page/documents/details/?targetId=Web-Console-Guide-Prism-v50:wc-block-services-enabling-t.html

Provision storage on the Nutanix cluster by creating a volume group. Create a client whitelist to enable access to the volume group by using the IP addresses or client initiator IQNs in a whitelist (as part of the volume group configuration). Create a secret for the volume group if you are using CHAP authentication.

http://www.vstellar.com/2019/01/10/ahv-networking-part-1-basics/#:~:text=AHV%20Network%20Architecture&text=virbr0%20is%20an%20internal%20switch,virbr0)%20have%20IP%20address%20192.168.

According to the Nutanix Support & Insights web search result1, erasure coding is a data savings technique that utilizes stripes and parity calculation in a Nutanix cluster. Erasure coding increases the usable capacity on a cluster by reducing the replication factor of data blocks. Instead of replicating data, erasure coding uses parity information to rebuild data in the event of a disk or node failure.Erasure coding can save up to 50% of storage space compared to replication factor 2, and up to 75% compared to replication factor 32.