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NEW QUESTION NO: 5
Which three of the listed items are monitored by the vSAN performance service? (Choose three.)
A. VMkernel adapters at the cluster level
B. Virtual machine consumption at the cluster level
C. Disk group at the host level
D. VMkernel adapters at the virtual disk level
E. Backend traffic at the cluster level
Answer: A,B,E
A:
BE: When the performance service is turned on, the cluster summary displays an overview of Virtual SAN performance statistics, including Virtual SAN IOPS, throughput, and latency.
At the cluster level, you can view detailed statistical charts for virtual machine consumption and the Virtual SAN back end.
References:
https://docs.vmware.com/en/VMware-
vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-93E95CA4-D7D1-4729-8FB4-
385B55B85FCD.html

NEW QUESTION NO: 6
Which services for vSAN are provided by NexentaConnect?
A. NFS and SMB
B. iSCSI and FC
C. Apache and JavaScript
D. Encryption and key management
Answer: A

NEW QUESTION NO: 7
The following are the configuration details for a 10-node all-flash vSAN cluster:
All hosts contain one vSAN disk group.
Each disk group has 400GB for the cache tier and 1600GB for the capacity tier.
A host in the cluster is placed into maintenance mode. The maintenance mode option selected is "Ensure data accessibility from other hosts".
How much is the vSAN datastore raw capacity reduced while the host is in maintenance mode?
A. 1600GB
B. 400GB
C. 0GB
D. 2000GB
Answer: A
References:
https://docs.vmware.com/en/VMware-
vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-73493C3C-0DEC-419D-9E36-
8 01B2839A5A5.html

NEW QUESTION NO: 8
Which replication solution is supported with vSAN and Site Recovery Manager?
A. vSAN iSCSI synchronous replication
B. vSphereReplication
C. vSAN iSCSI asynchronous replication
D. vSphere Fault Tolerance
Answer: B
References:
https://docs.vmware.com/en/VMware-Site-
Recovery/services/com.vmware.srmaas.admin.doc/GUID-5937A071-B1AA-4224-B508-
4D244D252C52.html

NEW QUESTION NO: 9
Given a limited maximum queue depth, what can an administrator do to potentially improve performance when deploying vSAN iSCSI volumes?
A. Utilize multiple iSCSI targets.
B. Change the erasure coding to RAID-6
C. Adjust the maximum iSCSI queue depth values
D. Configure multiple VMkernel ports
Answer: C
Today if you are noticing that your device queues are constantly bumping up to their maximum limits, it would be recommended to increase the Device/LUN depth and use SIOC to help mitigate any potential noisy neighbor problem.
References:https://blogs.vmware.com/vsphere/2012/07/troubleshooting-storage- performance-in-vsphere-part-5-storage-queues.html

NEW QUESTION NO: 10
Consider the following scenario in a vSAN cluster that contains six hosts:
What happens when a capacity devices transmits SCSI sense code errors and fails?
A. All components on the affected device are marked "degraded". vSAN attempts to rebuild the components on other healthy devices in the cluster without delay.
B. The host containing the affected device is placed into maintenance mode using the
"ensure accessibility" option. An administrator must log into the vSphere Web Client and click Repair Objects immediately.
C. All components on the affected device are marked "degraded". The host containing the affected drive is placed into maintenance mode using the 'ensure accessibility' option.
D. All components on the affected device are marked "offline". vSAN attempts to rebuild the components on other healthy devices in the cluster after 60 minutes by default.
Answer: A

NEW QUESTION NO: 11
Which are two characteristics of a RAID-5 storage configuration? (Choose two.)
A. Data is striped across multiple storage devices.
B. It uses less storage capacity than mirroring with the same level of availability.
C. Data remain available withthe loss to two storage devices.
D. It requires a minimum of five storage devices.
Answer: A,B

NEW QUESTION NO: 12
Which are two functions of software checksums in a vSAN environment? (Choose two.)
A. Limit the number of IOPS that an object can consume
B. Perform disk scrubbing in the background
C. Limit the number of reads to the capacity tiered disks
D. Automatically detect and resolve silent disk errors
Answer: B,D
Software checksums which will perform the following checks:
References: https://www.vladan.fr/vmware-vsan-6-2/

NEW QUESTION NO: 13
If a vSAN capacity device experiences a pattern of sustained high latency, how does vSAN attempt to remediate the issue?
A. vSAN attempts to evacuate the data from the storage device.
B. vSphere DRS migrates all virtual machines from the host containing the affected device
C. Virtual machines with components on the affected device are rebooted if vSphere Proactive HA is enabled
D. The hostcontaining the storage device is automatically placed into maintenance mode and the "vSAN storage device failure" alarms is triggered.
Answer: A
In vSAN 6.1 we introduced Dying Disk Handling to identify and remediate pro-actively disks that we detected high latency from.
When failure of a device is anticipated, vSAN evaluates the data on the device. If there are replicas of the data on other devices in the cluster, vSAN will mark these components as
"absent". "Absent" components are not rebuilt immediatelyas it is possible the cause of the issue is temporary. vSAN waits for 60 minutes by default before starting the rebuilding process. This does not affect the availability of a virtual machine as the data is still accessibleusing one or more other replicasin the cluster. If the only replica of data is located on a suspect device, vSAN will immediately start the evacuation of this data to other healthy storage devices.
References:https://storagehub.vmware.com/export_to_pdf/vmware-vsan-6-6-technical- overview-1

NEW QUESTION NO: 14
A virtual machine named VM01 is running on Host01 on a four-node vSAN cluster.
vSphere HA is enabled for the cluster. vSphere HA host isolation response is set to Power off and restart VMs. VM01 has a storage policy assigned to it that contains the rule Primary level of failures to tolerate = 1.
A network failure occurs that causes a vSAN network partition. Host01 is isolated from the rest of the cluster. The other three nores are NOT affected by the network failure.
How does this network failure impact VM01?
A. vSphere HA attempts to restart VM01 on Host01 after the number of minutes configured in the VSAN ClomRepairDelay advanced setting has elapsed.
B. vSphere HA immediately attempts to restart VM01 on Host01.
C. vSAN rebuilds all components that belong to VM01 on other nodes in the cluster. After the rebuild is complete vSphere HA attempts to restart VM01 on a node other than Host01.
D. vSphere HA powers off Vm01 and attempts to restart it on a node other than Host01.
Answer: D
Host isolation response determines what happens when a host in a vSphere HA cluster loses its management network connections, but continues to run. You can use the isolation response to have vSphere HA power off virtual machines that are running on an isolated host and restart them on a nonisolated host.
References:
https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.avail.doc/GUID- FA8B166D-A5F5-47D3-840E-68996507A95B.html

NEW QUESTION NO: 15
Consider the following vSAN cluster scenario:
What is the minimum number of physical hosts required to be a supported vSAN configuration?
A. Five (5)
B. Three (3)
C. Two (2)
D. Four (4)
Answer: B
References: VMware vSAN Design and Sizing Guide 6.5.Page: 18