You must be able to configure datastore clusters with Storage DRS, select appropriate path selection policies, and troubleshoot storage performance. The most important thing is to correctly enable and configure Storage DRS I/O balancing and choose Round Robin for FC multipathing.
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Configure and Manage vSphere Storage — choose a session length
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Domain overview
This domain covers configuring and managing vSphere storage, including VMFS, NFS, iSCSI, Fibre Channel, datastore clusters, and multipathing. It tests your ability to select the right path selection policy, enable Storage DRS for I/O balancing, and troubleshoot performance after array changes. Expect scenario-based questions on real-world storage design and optimization.
Exam objectives
Configuring datastore clusters and enabling Storage DRS for I/O latency balancing
Selecting path selection policies like Round Robin for maximum throughput
Troubleshooting VMFS6 performance after array firmware upgrades
Managing iSCSI and Fibre Channel multipathing on ESXi hosts
Assuming Storage DRS balances based on I/O latency without enabling the I/O metric option in the datastore cluster settings.
Choosing Most Recently Used (MRU) for Fibre Channel arrays when Round Robin is required to use all paths and maximize throughput.
Overlooking that a single VMFS6 datastore can become a bottleneck for a high-IOPS VM like SQL Server, leading to performance issues.
Click any question to see the full explanation and answer options, or start a focused practice session above.
A company is designing a vSphere environment for a critical database application. The storage array supports both Fibre Channel (FC) and iSCSI. The application requires low latency and high IOPS. Which storage protocol and path policy should be recommended?
2Which storage feature in vSphere allows a VM to be migrated from one datastore to another without any downtime?
3A vSphere administrator is observing that a VM with a 2 TB thin-provisioned virtual disk on a VMFS6 datastore is reporting 1.5 TB of used space inside the guest OS, but the datastore shows only 800 GB consumed by the VM. What is the most likely cause of this discrepancy?
4A vSphere environment uses an iSCSI storage array with multiple targets. The administrator configures CHAP authentication but some hosts fail to connect. The working hosts are configured with mutual CHAP, while the failing hosts use only one-way CHAP. What is the most likely reason for the failures?
5A company runs a critical SQL Server VM on vSphere 7.0. The VM has a single 300 GB virtual disk on a VMFS6 datastore backed by a SAN with 8 Gbps Fibre Channel. The VM is configured with 16 vCPUs and 64 GB RAM. Recently, users have reported slow query performance. The administrator checks the datastore performance and sees average latency of 15 ms with peaks of 50 ms during business hours. The storage array has multiple paths to the ESXi host, and the current path policy is Fixed with a single active path. The administrator wants to improve storage performance with minimal cost. Which action should the administrator take first?
6A company uses vSphere 7.0 with two ESXi hosts in a cluster. All virtual machines (VMs) are stored on a VMFS6 datastore backed by a single LUN from a mid-range SAN. The LUN is presented to both hosts and both hosts have identical multipathing configuration. Recently, an administrator noticed that one host shows the datastore as "Inactive" while the other host can access it normally. The administrator verifies that both hosts have connectivity to the SAN, the LUN is visible to both hosts, and the storage array reports the LUN as online. The administrator wants to restore access to the datastore on the affected host without disrupting VMs running on the other host. Which action should the administrator take?
7Sequence the steps to configure a DRS rule that keeps two VMs on different hosts.
8Place the steps to create a resource pool in a cluster.
9An administrator is configuring a vSAN cluster with all-flash capacity. The cluster uses RAID-5 erasure coding with a policy of 'Number of failures to tolerate = 1' (PFTT=1). The administrator wants to minimize storage overhead while ensuring availability. Which vSAN storage policy setting should be used?
10A company is deploying a high-performance database workload on vSphere. The storage array supports NVMe over RDMA (NVMe-oF) and iSCSI. The workload requires extremely low latency and high IOPS. The network is dedicated 25 Gbps Ethernet with RoCE v2 support. Which storage protocol should be recommended, and why?
11An ESXi host has an NFS datastore mounted from a NAS array. The administrator wants to enable hardware acceleration (VAAI) for the datastore. Which requirement must be met?
12An ESXi host is connected to an iSCSI storage array using software iSCSI initiator. The administrator has configured two NICs for iSCSI traffic. During setup, the administrator selects 'Round Robin' as the path policy for the storage device. What is the benefit of this path policy?
13Which THREE components are required to configure Storage DRS affinity and anti-affinity rules?
14What is the maximum number of paths that vSphere supports for a single storage device?
15An administrator notices that a VM with high I/O demands is experiencing performance issues because other VMs on the same datastore are consuming too many I/O operations. Which feature can be used to guarantee a minimum I/O share to this VM?
16What is the default block size of a VMFS5 datastore?
17An administrator needs to migrate a VM from a VMFS5 datastore to a vSAN datastore while preserving the storage policy. Which migration method should be used?
18A vSphere cluster has multiple storage arrays with different capabilities. The administrator wants to automatically place VMs on datastores that match their storage policy. What is required?
19Which feature allows a VM to use storage directly from the host's local disks, pooled across a cluster?
20Refer to the exhibit. What is the most likely reason the second path is in standby state?
21Refer to the exhibit. What does this error indicate?
22An administrator needs to create a datastore cluster for a set of VMs that require high availability. The VMs should be automatically balanced across datastores based on I/O latency. Which feature must be enabled on the datastore cluster?
23An administrator needs to expand a VMFS5 datastore that is currently 2 TB in size. The underlying LUN is 5 TB. What is the maximum size the datastore can be expanded to without involving additional LUNs?
24A vSphere administrator is planning a Storage DRS implementation for a datastore cluster containing multiple VMFS datastores. The VMs have various I/O patterns. Some VMs should always remain together on the same datastore. Which configuration should be used?
25An administrator is configuring multipathing for a Fibre Channel storage array. The administrator wants to maximize throughput by using all available paths. Which path selection policy should be chosen?
26A 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?
27An 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?
28A 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?
29A 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?
30Refer to the exhibit. An administrator increased the MaxQueueDepth parameter for an NFS 4.1 datastore. Which effect does this change have on performance?
31Refer to the exhibit. An administrator tries to enable vSAN on a host and receives this error. What is the most likely cause?
32Refer 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?
33Refer to the exhibit. An administrator configures a claim rule to use VMW_SATP_ALUA with VMW_PSP_RR and TPGS enabled. After applying the rule, the device shows one active and one standby path. However, the administrator notices that I/O is only sent to the active path. What is the most likely reason?
34A vSphere administrator needs to create a VMFS6 datastore on a new 4 TB LUN presented to an ESXi 7.0 host. The LUN is not yet formatted. Which method should the administrator use to create the datastore?
35An administrator is designing a vSAN cluster with 6 hosts. The cluster will run production workloads that require high availability. The administrator wants to minimize storage overhead while ensuring data can survive a single host failure. Which storage policy setting should be used?
36An administrator is troubleshooting a VMFS6 datastore that has become inaccessible after a storage array controller failover. The ESXi host logs show multiple 'Lost access to volume' errors. The administrator verifies that the array is presenting the LUN to the host, but the datastore remains unavailable. Which step should the administrator take first to resolve the issue?
37An administrator is configuring a vSAN cluster with a storage policy that uses RAID-5 erasure coding. The cluster has 6 hosts, each contributing capacity. The administrator sets the policy to 'Number of failures to tolerate' = 1. What is the minimum number of hosts required for this policy to be compliant?
38A vSphere administrator needs to present a new Fibre Channel LUN to an ESXi host. The LUN is already zoned and visible to the host's HBA. Which action should the administrator take to make the datastore available for use?
39A vSphere administrator needs to increase the size of a VMFS6 datastore that is running low on free space. The underlying LUN has 500 GB of unallocated space. The administrator expands the LUN on the storage array and then rescans the storage adapter. What should the administrator do next to grow the datastore?
40A vSphere administrator needs to add a new VMFS6 datastore to an ESXi 7.0 host. The storage array has presented a 2 TB LUN to the host. The administrator wants to ensure the datastore uses the entire LUN and is aligned correctly. Which action should the administrator take?
Deep-dive questions
The most-searched questions in this domain — detailed explanations, worked examples, full answer breakdowns.
You must be able to configure datastore clusters with Storage DRS, select appropriate path selection policies, and troubleshoot storage performance. The most important thing is to correctly enable and configure Storage DRS I/O balancing and choose Round Robin for FC multipathing.
The Courseiva VCP-DCV question bank contains 40 questions in the Configure and Manage vSphere Storage domain, covering the 17% of the exam attributed to this domain in the official VMware blueprint. Click any question to see the full explanation and answer breakdown.
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