VCP-DCV Configure and Manage vSphere Storage Practice Test 5 — 15 Questions

Question 1

Refer to the exhibit. An administrator creates a storage policy with the rule: "Rule: provisioningType equals thick". When the policy is applied to a VM on this array, what will be the compliance status?

Accepted Answer

Not compliant - the array does not advertise thick provisioning capability.. The array only advertises thin provisioning and replication capabilities. The policy requires thick provisioning, which is not advertised. Therefore the VM will be marked as uncompliant because the array does not support the required capability. Option B is incorrect because it does not match; the array supports thin only. Option C is incorrect because VVols do not automatically default to thick. Option D is incorrect because the array does not provide thick.

Answer

Not compliant - the replication RPO is too high.

Answer

Compliant - the storage policy is applied regardless of capabilities.

Answer

Compliant - the array supports thin provisioning by default.

Question 2

A financial services company has a vSAN cluster composed of 4 hosts, each with 8 disk groups (1 SSD cache and 6 HDD capacity per group). The cluster runs a mix of VMs, including a critical trading application VM that requires low latency. The administrator notices that the trading VM experiences intermittent performance degradation during market hours. vSAN performance monitoring shows high I/O latency for the VM's objects. The storage policy for this VM is set to RAID-1 (Mirroring) with Primary Failures to Tolerate (PFTT)=1 and Object Space Reservation=100%. The cluster has a disk capacity of 80% used. The administrator also observes that the vSAN cluster is configured with a single fault domain. Which action should the administrator take to improve the trading VM's performance?

Accepted Answer

Reduce the number of disk groups per host to 2, using larger SSDs for cache, to reduce cache contention.. Creating multiple fault domains allows vSAN to place replicas across different failure domains, improving availability and potentially reducing contention. However, the performance issue is likely due to resource contention. The best action is to reduce the number of disk groups per host to lower the number of devices competing for cache. Option A is incorrect because increasing PFTT to 2 would require more resources and increase overhead, worsening performance. Option C is incorrect because adding more hosts without reducing disk groups may not help if the bottleneck is cache contention. Option D is incorrect because deduplication and compression add CPU overhead and may increase latency, not reduce it.

Answer

Add two more hosts to the cluster and redistribute the disk groups.

Answer

Change the storage policy to PFTT=2 and Failure Tolerance Method=RAID-5/6 to reduce the number of replicas.

Answer

Enable deduplication and compression on the vSAN datastore to reduce capacity usage and I/O.

Question 3

A storage administrator is planning a vSAN stretched cluster for a remote office. The cluster must support stretching across two sites for disaster avoidance. Which two prerequisites must be met? (Choose two.)

Accepted Answer

The network latency between sites must be less than 5 ms round-trip.. Correct options A and D: Each site must have a minimum of two hosts (A) and network latency between sites must be less than 5 ms round-trip (D). Option B is incorrect because the witness host must be placed at a third site, not the primary. Option C is incorrect because a vSAN stretched cluster uses two fault domains (one per site) plus a witness, not four. Option E is incorrect because hosts can use multiple network adapters for vSAN traffic.

Answer

The witness host must be placed at the primary site.

Answer

All hosts must be configured with a single network adapter for vSAN traffic.

Answer

A vSAN stretched cluster requires a minimum of four fault domains.

Question 4

A company uses vSphere 8 with a vSAN cluster consisting of 4 ESXi hosts. Each host has a single disk group with one 400 GB NVMe cache SSD and two 2 TB capacity SSDs. The vSAN cluster is used to host a mix of production VMs and test VMs. During peak business hours, the vSAN performance service shows high write latency (over 30 ms) for several production VMs, while test VMs are not affected. The administrator examines the vSAN performance charts and notices that the disk groups are not balanced: one disk group shows over 80% used capacity and high congestion, while the others are below 40%. The administrator wants to improve performance without adding new hardware or changing the storage policy. The vSAN health service reports no errors. Which action should the administrator take first?

Accepted Answer

Enable vSAN proactive rebalance.. Enabling vSAN proactive rebalance (A) automatically rebalances data across disk groups based on capacity and performance, which can alleviate congestion on the overutilized disk group. Option B is not a supported practice as manual evacuation is not recommended. Option C may not be feasible without additional components. Option D does not address the imbalance and could increase overhead.

Answer

Manually evacuate data from the most utilized disk group.

Answer

Increase the number of disk groups on the busiest hosts.

Answer

Change the storage policy to use RAID-5 erasure coding to reduce capacity overhead.

Question 5

A company has a vSphere cluster consisting of 8 ESXi hosts connected to a single Fibre Channel SAN array. They use VMFS6 datastores to store virtual machine files. The storage administrator has scheduled a firmware upgrade for the SAN array that requires a controller reboot. This will cause a temporary loss of connectivity to one LUN (datastore) for approximately 5 minutes. The datastore hosts 15 production VMs, including critical database servers. The cluster has sufficient spare capacity on other datastores, but the VMs are large (each about 200 GB). The vSphere administrator must ensure that these VMs remain available during the upgrade. The cluster has vSphere HA enabled with default settings. What should the administrator do to meet the requirement?

Accepted Answer

Use Storage vMotion to migrate all VMs on the affected datastores to a healthy datastore before the upgrade.. Using Storage vMotion to live-migrate VMs to a healthy datastore (B) ensures zero downtime during the upgrade. Option A puts hosts into maintenance mode, disrupting VMs. Option C does not protect against storage loss. Option D is for host failure scenarios, not storage disruption.

Answer

Configure a vSphere HA admission control policy to reserve resources in case of host failure.

Answer

Place all ESXi hosts into maintenance mode.

Answer

Enable Storage I/O Control on the affected datastore to manage I/O during the upgrade.

Question 6

An administrator manages a vSAN cluster with 5 ESXi hosts in a single failure domain. The cluster uses vSAN version 8 and is configured with a single disk group per host. A storage policy is applied to a group of VMs with 'Number of failures to tolerate = 1' and 'Primary level of failures = Host'. One host experiences a catastrophic hardware failure and is now marked as 'Absent' in the vSAN cluster. The administrator checks the vSAN health and finds that the affected host's disk group is completely lost. One of the VMs from that group previously had two replicas on different hosts and a witness component on a third host. The VM is still powered on, and the administrator sees that one replica was on the failed host. The other replica and witness are on surviving hosts. What is the current state of this VM regarding data accessibility?

Accepted Answer

The VM is fully accessible because it still has one replica and the witness.. With FTT=1, the object has 2 replicas + 1 witness. The surviving replica and witness are sufficient to maintain read/write access. The VM remains fully accessible despite losing one replica. Option B is incorrect because vSAN can rebuild on another host if available. Option D is incorrect because the witness is metadata, not data.

Answer

The VM is accessible but performance is degraded because the disk group on the failed host is gone.

Answer

The VM is inaccessible because the lost replica cannot be rebuilt without a replacement host.

Answer

The VM is inaccessible because the witness component is now the only copy and cannot be used for reads.

Question 7

A vSphere administrator is deploying VMs on a vSAN cluster with 6 hosts. Each host has two disk groups, each with one cache SSD and four capacity SSDs. The administrator applies a storage policy using RAID 5 erasure coding with Number of failures to tolerate set to 1. After some time, the administrator notices that several VMs are showing compliance status as 'Non-compliant'. Investigating further, the administrator finds that on one host, the cache SSD of the first disk group has failed. The capacity SSDs in that disk group are still functional. The vSAN cluster still has sufficient overall capacity and the health service shows no other issues. What is the most likely reason for the VMs' non-compliance?

Accepted Answer

The failed cache device makes the entire disk group unavailable, so components on that disk group are inaccessible.. A failed cache device renders the entire disk group non-operational; any VM components on that disk group become inaccessible, causing non-compliance. Option A is incorrect because cache capacity is not a compliance factor. Option B is incorrect because loss of a single cache device does not remove a fault domain. Option C is incorrect because the number of hosts with cache devices is still sufficient.

Answer

The failed cache device reduces the overall cache capacity, causing the policy to be violated.

Answer

The vSAN cluster has lost a fault domain due to the failed cache device.

Answer

The RAID 5 policy requires a minimum of 4 hosts with cache devices, and now only 5 are available.

Question 8

Which THREE of the following are true about vSphere Storage DRS?

Accepted Answer

Storage DRS can be configured with affinity rules.. Storage DRS can move virtual machine files between datastores (migration), supports affinity rules, and requires vMotion. It does not work only with VMFS (also NFS) and does not always automatically migrate VMs (depending on automation level).

Answer

Storage DRS always automatically migrates VMs.

Answer

Storage DRS works only with VMFS datastores.

Question 9

An administrator notices that a VMFS datastore has only one optimized path. The exhibit shows the output of esxcli storage nmp path list for that datastore. What should the administrator do to fully utilize both storage controllers?

Accepted Answer

Change the SATP to VMW_SATP_ALUA.. The SATP should be VMW_SATP_ALUA for arrays that support ALUA to properly handle optimized and non-optimized paths. The current SATP (DEFAULT_AA) treats all paths equally, leading to suboptimal path usage.

Answer

Rescan the storage adapters.

Answer

Change the PSP to Round Robin.

Answer

Enable the path failover policy.

Question 10

A company has a vSphere 7.0 cluster with 6 ESXi hosts connected to a Dell EMC PowerStore array using iSCSI. They are using VMFS6 datastores. After a recent firmware upgrade on the array, they notice that performance on one datastore has degraded significantly. The datastore is used by several high-I/O VMs. The administrator runs 'esxcli storage core path list' and sees that all paths to that datastore are active but with varying latency. The PSP is set to Round Robin with IOPS limit of 1000. The SATP is VMW_SATP_ALUA. The storage administrator confirms that the array is in active-active mode. What should the administrator do to improve performance?

Accepted Answer

Increase the Round Robin IOPS limit to 10000.. The low Round Robin IOPS limit (1000) can cause frequent path switching, leading to inefficiency and high latency. Increasing the IOPS limit allows more I/O per path before switching, improving performance on high-I/O workloads. Option A (MRU) would reduce parallelism, Option C is incorrect because ALUA is appropriate for the array, and Option D (QoS/VAAI) is not the root cause.

Answer

Enable the array's QoS policy and configure the datastore for VAAI.

Answer

Change the PSP to Most Recently Used (MRU) to reduce path thrashing.

Answer

Change the SATP to VMW_SATP_DEFAULT_AA and reconfigure the iSCSI initiator.

Question 11

Refer to the exhibit. An administrator runs vmkfstools -Ph on a VSAN datastore. The output shows VMFS version 3.61 and a capacity of 2.0 TB. Which statement is true about this datastore?

Accepted Answer

The datastore is a vSAN datastore, and the VMFS version shown is for compatibility with VMFS tools.. The exhibit shows a VSAN datastore displayed as VMFS version 3.61. vSAN datastores are presented as VMFS version 3.61 to maintain compatibility with VMFS tools. The actual vSAN object store is not formatted with VMFS, but vmkfstools reports this version for compatibility.

Answer

The datastore is a VMFS datastore that has been upgraded to version 3.61.

Answer

The datastore is a Virtual Volumes datastore, which uses VMFS 3.61.

Answer

The datastore is an NFS datastore mounted as VMFS 3.61.

Question 12

Refer to the exhibit. An administrator increased the MaxQueueDepth parameter for an NFS 4.1 datastore. Which effect does this change have on performance?

Accepted Answer

It increases throughput by allowing more concurrent I/O operations.. Increasing MaxQueueDepth allows more concurrent I/Os to be queued to the NFS server, which can improve throughput for workloads with high I/O concurrency but may increase latency if the NFS server is not capable of handling the increased queue depth.

Answer

It reduces latency by limiting the number of queued I/Os.

Answer

It limits the maximum size of read and write operations.

Answer

It has no effect because NFS 4.1 does not support queue depth adjustments.

Question 13

Refer to the exhibit. An administrator tries to enable vSAN on a host and receives this error. What is the most likely cause?

Accepted Answer

The host has disks but they are not claimed for vSAN or not configured in a disk group.. vSAN requires at least one disk group consisting of one or more capacity disks (and optionally a cache disk). The error indicates that no disk group is present or the disks are not properly claimed.

Answer

The vSAN cluster has insufficient hosts (needs at least 2).

Answer

The host does not have any disks installed.

Answer

The host's disks are all SSD and vSAN requires HDD for capacity tier.

Question 14

Refer to the exhibit. An administrator configures Storage DRS for a datastore cluster. The cluster has datastores with varying performance. Which statement about Storage DRS behavior is correct?

Accepted Answer

Storage DRS will generate recommendations but will not perform migrations automatically.. With manual automation, Storage DRS only generates recommendations and does not automatically migrate VMs. The administrator must review and apply recommendations manually.

Answer

Storage DRS will automatically migrate VMs when utilization exceeds 80%.

Answer

Storage DRS will only balance based on space, ignoring I/O metrics.

Answer

Storage DRS will balance datastores every 8 hours regardless of thresholds.

Question 15

Refer to the exhibit. An administrator attempts to add a host to a vSAN cluster and receives this error. Which step should the administrator take to resolve the issue?

Accepted Answer

Create a new VMkernel adapter (vmk3) on the host's network and enable vSAN traffic.. vSAN requires a dedicated VMkernel interface with the vSAN service enabled. The host has management, vMotion, and provisioning interfaces but none with vSAN enabled. The administrator must create a new VMkernel adapter (e.g., vmk3) on a host network and enable the vSAN service on it.

Answer

Reconfigure the vMotion interface (vmk1) to also carry vSAN traffic.

Answer

Add the host to the cluster without vSAN and enable vSAN later.

Answer

Enable vSAN traffic on the existing vmk0 interface.

VCP-DCV Configure and Manage vSphere Storage Practice Test 5 — 15 Questions

Exhibit

VCP-DCV Configure and Manage vSphere Storage Practice Test 5 — 15 Questions

Exhibit