Which two vSAN Health Check items are included for vSphere Update Manager integration? (Choose two.)
- A . vSAN build recommendation
- B . vSAN object health
- C . Online health connectivity
- D . vSAN release catalog up-to-date
- E . Performance data collection
What is a benefit of using vSphere Distributed Switches in a vSAN network?
- A . Simplifies network abstraction
- B . Enables network redundancy
- C . Supports faster network adapters
- D . Provides the ability to adjust the MTU
A single disk in a vSAN disk group suffers from an unrecoverable hardware failure. This causes vSAN to set the health status for all disks in the group to Permanent disk loss, indicating disk failure.
Assuming all other disks have not suffered from a hardware failure, why would vSAN mark all disks in the group as failed?
- A . The vSAN disk management service has failed.
- B . The affected vSphere host is offline.
- C . The key management server is offline.
- D . Deduplication and compression are enabled on the vSAN cluster.
In stretched clusters, what is a benefit of implementing a virtual witness rather than a physical witness?
- A . Reduced vSphere licensing
- B . Shared metadata between separate clusters
- C . Increased vSAN datastore capacity
- D . Increased compute for running VMs
A
Explanation:
Reference: https://cormachogan.com/2015/09/11/a-closer-look-at-the-vsan-witness-appliance/
A storage administrator discovers vSAN is rebalancing components across a cluster randomly and faces degraded performance on the applications.
What should be done to avoid these issues?
- A . Size at least two disk groups on each node
- B . Maintain a minimum of 10 percent unused capacity
- C . Keep total storage consumption <70 percent
- D . Ensure there is sufficient queue depth on the I/O Controller
What is the purpose of slack space in vSAN?
- A . Increases overall vSAN capacity
- B . Allows for maintenance and failure operations
- C . Stores vSphere HA heartbeats
- D . Provides vSAN analytic data
B
Explanation:
Reference: https://storagehub.vmware.com/t/vmware-vsan/vmware-r-vsan-tm-design-and-sizing-guide-2/how-much-slack-space-should-i-leave-1/
The objects on a 4-node vSAN cluster are assigned a RAID-5 policy. A network outage occurs causing host one to lose connectivity with the rest of the cluster. Seventy-five minutes elapse.
What is the health state of the objects?
- A . Reduced availability with no rebuild
- B . Reduced availability with no rebuild C delay timer
- C . Non-availability related incompliance [non-compliance]
- D . Reduced availability
A vSAN 5-node cluster has two sets of VMs, each associated with a separate storage policy.
-Group A (Storage Policy: FTT=0)
– Group B (Storage Policy: FTT=2)
What are two possible results when two hosts in the vSAN cluster fail permanently? (Choose two.)
- A . VMs in Group B will become inaccessible if a third host permanently fails.
- B . vSAN will rebuild data associated with Group A.
- C . VMs in Group A might experience data inaccessibility.
- D . VMs in Goup B might experience data loss.
- E . A host can be put into maintenance mode without impacting VMs in either Group A or B.
A 3-node vSAN cluster will take which two actions, when a drive is physically removed from a vSAN node? (Choose two.)
- A . Marks all components on that device as absent
- B . Marks all components on that device as degraded
- C . Waits for the configured delay timer before rebuild
- D . Marks all components on that device as stale
- E . Starts component rebuild immediately
AC
Explanation:
Reference: https://storagehub.vmware.com/t/vmware-vsan/vsan-6-7-proof-of-concept-guide/disk-failures9/
A vSAN cluster has this configuration:
– 4 hosts with 1 disk group per host
– Each disk group contains 1 cache device and 7 capacity devices
What are two ways to increase the vSAN datastore storage capacity? (Choose two.)
- A . Add a host to the cluster
- B . Add a cache device to each disk group
- C . Add a capacity drive to each disk group
- D . Replace a cache device with a larger cache device
- E . Add a disk group to each host
An organization is no longer compliant with security requirements because a vSphere administrator disabled encryption on a vSAN cluster.
Which vCenter Server role ensures only authorized vSphere administrators have access to encryption functionality?
- A . Administrator
- B . Read-only
- C . No cryptography administrator
- D . No access
C
Explanation:
Reference: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.security.doc/GUID6C181D08-6650-4AD1-92D1-AAFDA3A3E38C.html
vCenter Server is offline.
What are two ways to check the health of a vSAN cluster? (Choose two.)
- A . ESXi system logs on vSAN datastore
- B . vSphere Host Client
- C . esxcli
- D . HCIBench
- E . esxtop
BC
Explanation:
Reference: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.security.doc/GUID6C181D08-6650-4AD1-92D1-AAFDA3A3E38C.html
What are two purposes of a vSAN storage policy? (Choose two.)
- A . Determine how storage objects are provisioned
- B . Determine vSAN encryption level
- C . Guarantee the required level of service
- D . Enable deduplication and compression
- E . Enable TRIM/UNMAP
AC
Explanation:
Reference: http://www.vmwarearena.com/understanding-vmware-virtual-san-storage-policies-detailedview/
An administrator wishes to prevent notifications of vSAN Health status during a scheduled maintenance window.
What can be done to achieve this?
- A . Disable SNMP service
- B . Disable the performance service
- C . Run performance diagnostics prior to scheduled maintenance
- D . Silence the alert from the HTML client
An administrator is planning to deploy a new vSAN cluster with these requirements:
– Physical adapters will share capacity among several traffic types
– Guaranteed bandwidth for vSAN during bandwidth contention
– Enhanced security and performance
What must be considered when configuring the new vSAN cluster?
- A . Isolate traffic in a VLAN and utilize Network I/O Control
- B . Utilize IOPS Limit rules in storage policies
- C . Utilize jumbo frames with Network I/O Control
- D . Implement vSphere I/O filters
A
Explanation:
Reference: https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.vsan-planning.doc/GUID-031F9637-EE29-4684-8644-7A93B9FD8D7B.html
Which two conditions should be verified before removing the ESXi host from a vSAN cluster? (Choose two.)
- A . Data evacuation is complete.
- B . Encryption is disabled.
- C . ESXi host is in maintenance mode.
- D . Resyncs are running.
- E . All objects are currently healthy.
CE
Explanation:
Reference: https://vsan-essentials.gitbooks.io/vsan-6-2/content/chapter7.html
Which VM file type resides in the VM home namespace object on a vSAN datastore?
- A . .vswp
- B . .vmsn
- C . .vmx
- D . .vmem
C
Explanation:
Reference: https://vsan-essentials.gitbooks.io/vsan-6-2/content/chapter6.html
In a 10-node hybrid vSAN cluster, each node has seven 4TB magnetic disks and one 2TB SSD.
What is the raw storage capacity of the vSAN datastore?
- A . 140TB
- B . 150TB
- C . 280 TB
- D . 300 TB
Refer to the exhibit.
A solution architect is setting up a highly resilient vSAN hybrid cluster.
Why is the cache incorrectly sized in this configuration?
- A . Cache disk needs to meet vSAN Compatibility Guide
- B . Cache-to-capacity ratio needs to be sized lower
- C . Cache-to-capacity ratio needs to be sized higher
- D . Number of cache disks in disk group is insufficient.
An all-flash vSAN cluster contains four nodes.
Which two storage policies can the cluster satisfy? (Choose two.)
- A . FTT=2 (RAID-1 Mirroring)
- B . FTT=2 (RAID-6 Erasure Coding)
- C . FTT=1 (RAID-1 Mirroring)
- D . FTT=1 (RAID-5 Erasure Coding)
- E . FTT=3 (RAID-1 Mirroring)
A company implements a vSAN environment with linked clone virtual desktops and homogeneous desktop operating systems. During the last three months, users have experienced intermittent high latency, degraded performance, and lockout from desktops.
Which two methods should an administrator use to monitor and respond to the issues? (Choose two.)
- A . vRealize Log Insight
- B . vRealize Automation
- C . Live Optics
- D . HCIBench
- E . vRealize Operations Manager
An administrator has discovered that space utilized by VMs does not decrease after deleting files and folders within the VMs. The administrator needs to be able to reclaim this space.
Which action could the administrator perform to accomplish this task?
- A . Enable Storage I/O Control.
- B . Enable TRIM/UNMAP for the vSAN cluster.
- C . Reboot the VM to recreate the swap file.
- D . Assign a storage policy with thin provisioning.
End-users are complaining that an application running on an all-flash vSAN datastore is not performing well.
Which performance chart should an administrator view to troubleshoot this issue?
- A . Recovery Write IOPS
- B . Resync Latency
- C . Read Cache Read IOPS
- D . Write Buffer Free Percentage
Which two features are available with the Cluster Quickstart wizard? (Choose two.)
- A . Deploy a vSAN Witness appliance
- B . Update storage controller drivers
- C . Check for errors and inconsistencies
- D . Setup lockdown mode for vSAN hosts
- E . Perform pre-check evaluation for data migration
A system administrator running a 6-node cluster is trying to enable the deduplication and compression feature. During the process of switching it on, the General vSAN error occurs.
What is the possible reason the General vSAN error occurred?
- A . Force provisioning setting is required.
- B . The cluster is a hybrid environment.
- C . Storage policies require FTT=1.
- D . The cluster is an all-flash environment.
B
Explanation:
Reference: http://www.optiodata.com/documents/optio/datasheets/dell-emc-vxrail-appliance-techbook.pdf
The vSAN host memory needs to be replaced and the entire operation is expected to take 90-120 minutes.
Which vSAN advanced setting can be adjusted to avoid rebuild operations during the host hardware maintenance?
- A . Site Read Locality
- B . Forced Provisioning
- C . Object Repair Timer
- D . Thin Swap
You are designing a vSAN stretched cluster solution.
What is the maximum number of nodes possible for this solution?
- A . 15 per data site + 1 witness host
- B . 30 per data site + 1 witness host
- C . 32 per data site + 1 witness host
- D . 64 per data site + 1 witness host
What are two recommended reasons for configuring a cluster with at least one node in addition to the minimum required number? (Choose two.)
- A . To ensure object accessibility
- B . To support the use of RAID-6
- C . To provide more flexible storage policy options
- D . To provide full protection during maintenance mode operations
- E . To support data at rest encryption on vSAN hybrid clusters
CD
Explanation:
Reference: https://blogs.vmware.com/virtualblocks/2018/05/24/vsan-deployment-considerations/
vCenter reports a number of vSAN network alarms on a 2-node vSAN Direct Connect cluster. The test pings show irregularities in the ping results.
Using vSAN Health service, which two checks should be used to identify the network root cause? (Choose two.)
- A . Physical disk operation health
- B . Network latency
- C . vSAN extended configuration
- D . vSAN disk balance
- E . vSAN basic unicast connectivity
A vSAN administrator is designing a new all-flash vSAN cluster. The cluster will host read intensive applications.
Which factor should be included in the design to improve read performance?
- A . Multiple disk groups
- B . Large capacity disks
- C . Large cache disks
- D . Large controller cache
Which storage policy action results in a component resync?
- A . Enabling object checksum
- B . Changing object space reservation to thick provisioning
- C . Adding an IOPS Limit rule to a storage policy
- D . Changing the failure tolerance method
vSAN is configured with a storage policy with a Failures To Tolerate (FTT) set to three.
Which type of redundancy is being used?
- A . RAID-0 (Striping)
- B . RAID-1 (Mirroring)
- C . RAID-6 (Erasure Coding)
- D . RAID-5 (Erasure Coding)
B
Explanation:
Reference: https://www.sbarjatiya.com/notes_wiki/index.php/About_VSAN_6.6
Which default VMware vSphere High Availability cluster setting must be changed when using a vSAN stretched cluster?
- A . Datastore with All Paths Down
- B . Datastore with Permanent Device Loss
- C . Response for Host Isolation
- D . Enable Host Monitoring
The cluster level backend IOPS performance graph shows a higher-than-average number of IOPS.
What is a possible reason for this?
- A . Data resynchronizations
- B . Low volume of vSAN vital memory pools
- C . DRS invoking multiple vMotion migrations
- D . Destaging congestion
A
Explanation:
Reference: https://kb.vmware.com/s/article/2144493
An administrator of a vSAN 6.5 environment is planning a path to move to unicast for the vSAN network.
How will the administrator achieve this?
- A . Enable LACP on vSAN switch ports.
- B . Upgrade vCenter and vSAN nodes to vSAN 6.6 or later.
- C . Enable unicast on the vSAN interfaces.
- D . Disable multicast for vSAN using ESXCLI commands.
When using vSAN Encryption, where does the Key Encryption Key persistently reside?
- A . in /etc/vmware/ssl on each vSAN host
- B . in the KMS server
- C . in a VM configuration file on vSAN
- D . in the vCenter Server cache
What is a mandatory requirement for a vSAN stretched cluster?
- A . Two witness hosts protected by vSphere Fault Tolerance
- B . Minimum of two guaranteed lines of 10Gbps bandwidth
- C . vSphere Replication configured between the data sites
- D . Latency between data sites must be less than or equal to 5ms
D
Explanation:
Reference: https://vsan-essentials.gitbooks.io/vsan-6-2/content/chapter8.html
An architect is asked to design a vSAN cluster with these requirements:
– Supports erasure coding storage policy
– Minimized inaccessibility from single device failures
– Ability to re-protect data after a failure
The desired configuration should be able to survive a single failure.
Which configuration satisfies the design requirements?
- A . 3-node hybrid vSAN cluster
- B . 4-node hybrid vSAN cluster
- C . 4-node all-flash vSAN cluster
- D . 5-node all-flash vSAN cluster
A new vSAN cluster needs to run 900 VMs and protect against one failure.
What is the minimum number of nodes needed to meet the requirement?
- A . 3
- B . 4
- C . 5
- D . 6
Refer to the exhibit.
In a 2-node vSAN environment, a storage administrator has setup a vSAN storage policy.
When the stripe width is changed to three, what is the approximate component size of each replica marked in red?
- A . 33GB
- B . 50GB
- C . 66GB
- D . 100GB