Dell D-UN-DY-23 Online Practice Questions and Exam Preparation

Dell D-UN-DY-23 Online Questions & Answers

• Question 21:

  DRAG DROP

  A storage engineer was asked to restore a LUN snapshot using a previous copy.

  What is the correct sequence of steps for a restore process?

  Select and Place:

  

  

  ---

  Explanation/Reference:

• Question 22:

  What is the maximum size of a drive partnership group when expanding a Dynamic Pool?

  A. 64 drives
  B. 84 drives
  C. 96 drives
  D. 32 drives
  D. 32 drives

  ---

  Explanation/Reference:

  A drive partnership group is a collection of drives of the same drive type that have been combined into a hidden dynamic pool object. Each drive within a dynamic pool can only be part of a single drive partnership group, and a drive will never change the drive partnership group. The maximum size of a drive partnership group is 32 drives, regardless of the drive type or size. When expanding a dynamic pool, the system will automatically create new drive partnership groups as needed, and distribute the drives evenly across the groups. The number of drive partnership groups in a dynamic pool is equal to the number of drives divided by 32, rounded up to the nearest integer. References: Dell Unity: Dynamic Pools2, page 5.

• Question 23:

  Which snapshot option is set automatically when a Pool is configured?

  A. Total Pool Consumption
  B. Pool Automatic Deletion Policy
  C. Snapshot Pool Consumption
  B. Pool Automatic Deletion Policy

  ---

  Explanation/Reference:

  The snapshot option that is set automatically when a pool is configured is the Pool Automatic Deletion Policy. This option determines how the system handles the deletion of snapshots when the pool reaches a certain threshold of capacity

  utilization. The user can choose between three policies: Never Delete, Delete Oldest, or Delete LowestPriority. The Total Pool Consumption and the Snapshot Pool Consumption are not snapshot options, but rather metrics that show the

  amount of pool space consumed by the pool data and the snapshots respectively.

  References: [Dell EMC Unity: Storage Pools and RAID Groups], [Dell EMC Unity:

  Snapshots and Thin Clones]

• Question 24:

  A system administrator deployed a UnityVSA to their vSphere environment. They did not add the management IP to the UnityVSA during the installation.

  Which command must be used to apply the management IP from the vSphere UnityVSA console?

  A. svc_ipmi
  B. svc_change_hw_config
  C. svc_initial_config
  D. svc_inject
  C. svc_initial_config

  ---

  Explanation/Reference:

  To apply the management IP from the vSphere UnityVSA console, the system administrator must use the svc_initial_config command. This command allows the user to configure the initial network settings for the UnityVSA, such as the management IP address, subnet mask, gateway, and DNS servers. The svc_ipmi command is used to configure the IPMI settings for the UnityVSA, such as the IPMI IP address, username, and password. The svc_change_hw_config command is used to change the hardware configuration of the UnityVSA, such as the number of CPU cores, memory size, and disk size. The svc_inject command is used to inject faults into the UnityVSA for testing purposes. References: [Dell EMC UnityVSA Installation Guide], [Dell EMC UnityVSA Command Line Interface Reference Guide]

• Question 25:

  What is a benefit of using vVols?

  A. They enable the automatic import of capability profiles from vSphere to Unisphere.
  B. All VMs on a datastore are snapped simultaneously.
  C. Individual VMs on a datastore can be snapped.
  D. They enable the assignment of isolated file storage partitions.
  C. Individual VMs on a datastore can be snapped.

  ---

  Explanation/Reference:

  A benefit of using vVols is that individual VMs on a datastore can be snapped. vVols are virtual volumes that are stored on a storage array and managed by vSphere. They enable granular control and management of VM storage. With vVols,

  each VM has its own set of virtual disks that are mapped to corresponding storage objects on the array. This allows the array to perform snapshot operations on individual VMs without affecting other VMs on the same datastore.

  References: [Dell EMC Unity: VMware vSphere Virtual Volumes (vVols) Implementation]

• Question 26:

  What three VMware datastore types can be defined by using UI or CLI interfaces from the Dell Unity XT platform? (Choose three.)

  A. vVol (Block)
  B. NFS (File!
  C. VMFS (Block)
  D. SMB
  E. RDM
  A. vVol (Block)
  B. NFS (File!
  C. VMFS (Block)

  ---

  Explanation/Reference:

  VMware datastore is a logical container that holds virtual machine files and other data. There are three types of VMware datastore that can be defined by using UI or CLI interfaces from the Dell Unity XT platform: vVol (Block): A vVol datastore is a block-based storage object that is formatted with the VMware Virtual Volumes (vVol) framework and used to store virtual machine files and metadata. A vVol datastore can be created by using the Unisphere UI or the UEMCLI interface on the Dell Unity XT system. A vVol datastore can provide granular control, policy-based management, and improved performance for virtual machines. NFS (File): An NFS datastore is a file-based storage object that is formatted with the Network File System (NFS) protocol and used to store virtual machine files and other data. An NFS datastore can be created by using the Unisphere UI or the UEMCLI interface on the Dell Unity XT system. An NFS datastore can provide scalability, flexibility, and efficiency for virtual machines. VMFS (Block): A VMFS datastore is a block-based storage object that is formatted with the VMware File System (VMFS) and used to store virtual machine files and other data. A VMFS datastore can be created by using the Unisphere UI or the UEMCLI interface on the Dell Unity XT system. A VMFS datastore can provide high performance, reliability, and compatibility for virtual machines. References: Dell EMC Unity: VMware ESXi Hosts and Clusters Dell EMC Unity: Unisphere Overview Dell EMC Unity: Unisphere CLI User Guide

• Question 27:

  Which firewall ports are required to be open for a successful outbound connection when configuring integrated secure connect gateway?

  A. 80 and 443
  B. 9443 and 443
  C. 443 and 8443
  D. 80 and 9443
  C. 443 and 8443

  ---

  Explanation/Reference:

  The firewall ports that are required to be open for a successful outbound connection when configuring integrated secure connect gateway are 443 and 8443. Integrated secure connect gateway is a feature that enables secure remote access

  to the Dell Unity system through the Unisphere Central web portal. It requires an outbound connection from the Dell Unity system to the Unisphere Central server over the internet. Port 443 is used for HTTPS communication and port 8443 is

  used for WebSocket communication.

  References: [Dell EMC Unity: Unisphere Overview], [Dell EMC Unity: Integrated Secure Connect Gateway]

• Question 28:

  An administrator has configured a Host Group to have access to a storage object.

  What are two benefits of this configuration? (Choose two.)

  A. Ensures that snapshots are applied to all LUNs in the group
  B. Provides multiple hosts the same access to NFS Filesvstems
  C. Provides multiple hosts access to the same VMFS Datastores
  D. Ensures that block storage is replicated to the same hosts
  E. Provides multiple hosts access to the same LUNs
  C. Provides multiple hosts access to the same VMFS Datastores
  E. Provides multiple hosts access to the same LUNs

  ---

  Explanation/Reference:

  A Host Group is a logical grouping of hosts that share the same access permissions to storage objects, such as LUNs, VMFS Datastores, or NFS Filesystems. By configuring a Host Group, an administrator can simplify the management of multiple hosts and ensure consistent access to the storage resources. Some of the benefits of using a Host Group are: Provides multiple hosts access to the same VMFS Datastores: A VMFS Datastore is a block-based storage object that is formatted with the VMware File System (VMFS) and used to store virtual machine files. A VMFS Datastore can be shared by multiple hosts that are part of a VMware cluster. By adding these hosts to a Host Group and assigning the VMFS Datastore to the Host Group, the administrator can ensure that all the hosts have the same access permissions and can access the virtual machines on the Datastore. Provides multiple hosts access to the same LUNs: A LUN is a block-based storage object that is presented to a host as a SCSI device. A LUN can be shared by multiple hosts that have the same operating system and use a cluster-aware file system. By adding these hosts to a Host Group and assigning the LUN to the Host Group, the administrator can ensure that all the hosts have the same access permissions and can access the data on the LUN. References: Dell EMC Unity: Host Configuration Dell EMC Unity: VMware ESXi Hosts and Clusters

• Question 29:

  Which feature can be configured for a Dell Unity XT file system NFS share?

  A. Access-Based Enumeration
  B. Protocol Encryption
  C. Host Access Level
  D. Distributed File System
  C. Host Access Level

  ---

  Explanation/Reference:

  A feature that can be configured for a Dell Unity XT file system NFS share is the Host Access Level. This feature allows the user to specify the access permissions for each host or host group that is allowed to access the NFS share. The access permissions can be set to Read/Write, Read Only, or No Access. The Host Access Level feature can be used to control the security and performance of the NFS share. Access-Based Enumeration, Protocol Encryption, and Distributed File System are features that can be configured for a Dell Unity XT file system SMB share, not NFS share. References: [Dell EMC Unity: File System Configuration], [Dell EMC Unity: SMB Share Configuration]

• Question 30:

  A storage administrator has a Dell Unity XT 480 system with one pool of flash drives, 192 GB of RAM, and 1.2 TB of FAST Cache.

  What is the total cache availability for caching the flash drives?

  A. 3.2 TB
  B. 1.39 TB
  C. 3.58 TB
  D. I6.0 TB
  C. 3.58 TB

  ---

  Explanation/Reference:

  The total cache availability for caching the flash drives on a Dell Unity XT 480 system with one pool of flash drives, 192 GB of RAM, and 1.2 TB of FAST Cache is 3.58 TB. This is calculated by adding the system memory (RAM), the FAST Cache, and the pool cache. The system memory is 192 GB, which is equivalent to 0.18 TB. The FAST Cache is 1.2 TB, which is a dedicated cache for the flash drives. The pool cache is 2.2 TB, which is a portion of the flash drives that is reserved for caching the pool data. Therefore, the total cache availability is 0.18 + 1.2 + 2.2 = 3.58 TB. References: [Dell EMC Unity: Performance Metrics], [Dell EMC Unity: FAST Cache Overview]