[Mar-2024] EMC D-UN-DY-23 DUMPS WITH REAL EXAM QUESTIONS
2024 New PassTorrent D-UN-DY-23 PDF Recently Updated Questions
EMC D-UN-DY-23 certification exam is an excellent choice for IT professionals who want to demonstrate their expertise in deploying and managing Dell Unity storage systems. D-UN-DY-23 exam covers a range of topics related to Dell Unity, and it is designed to be challenging but rewarding for those who pass it. If you are an IT professional who works with Dell Unity storage systems, this certification exam can help you take your career to the next level.
NEW QUESTION # 15
What is the result of enabling Data Reduction on a LUN in a consistency group containing three LUNs?
- A. Data Reduction will be enabled on all LUNs is the consistency group.
- B. Any writes to the LUN will go through the Data Reduction logic.
- C. Data Reduction and Advanced Deduplication will be enabled on all LUNs.
- D. All writes to all consistency group LUNs will go through the Data Reduction logic.
Answer: D
Explanation:
Explanation
Data Reduction is a feature that reduces the amount of physical storage space required to store user data on a LUN. Data Reduction is enabled at the LUN level and applies to all the data in the LUN, including snapshots and thin clones. Data Reduction consists of two components: compression and deduplication. Compression reduces the size of data blocks by removing redundant information, while deduplication eliminates duplicate blocks across the LUN. When Data Reduction is enabled on a LUN, all writes to the LUN will go through the Data Reduction logic before being written to the storage pool. If the LUN is part of a consistency group, Data Reduction will be enabled on all the LUNs in the consistency group, and all writes to any LUN in the group will go through the Data Reduction logic. This ensures that the data in the consistency group is consistent and protected by the same Data Reduction settings. References:
Dell EMC Unity: Data Reduction Overview
Dell EMC Unity: Data Reduction Configuration and Best Practices
NEW QUESTION # 16
What is the maximum size of a drive partnership group when expanding a Dynamic Pool?
- A. 84 drives
- B. 32 drives
- C. 96 drives
- D. 64 drives
Answer: B
Explanation:
Explanation
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.
NEW QUESTION # 17
Which two actions are recommended according to best practices when connecting iSCSI host to a Dell Unity XT system? (Choose two.)
- A. Use private network for iSCSI interfaces.
- B. Interfaces should be on separate subnets.
- C. Use standard NIC for iSCSI.
- D. Manually register host on storage array.
Answer: A,B
Explanation:
Explanation
Two actions that are recommended according to best practices when connecting iSCSI host to a Dell Unity XT system are to ensure that the interfaces are on separate subnets and to use a private network for iSCSI interfaces. These actions can improve the performance, security, and availability of the iSCSI network. Having interfaces on separate subnets can prevent broadcast storms, reduce network congestion, and enable multipathing. Using a private network for iSCSI interfaces can isolate the iSCSI traffic from other network traffic, reduce the risk of interference or attacks, and simplify the network configuration. Manually registering host on storage array and using standard NIC for iSCSI are not recommended actions, as they can introduce errors, inefficiencies, and limitations.
References: [Dell EMC Unity: iSCSI Configuration], [Dell EMC Unity: Best Practices Guide]
NEW QUESTION # 18
A deployment engineer has changed theSchedule Time Zoneunder the Settings menu. However, existing snapshots schedules continue to run at the previously configured time.
Why is this occurring?
- A. Existing snapshot schedules cannot be updated to the same absolute time.
- B. Existing snapshot schedules are not updated to the same absolute time when the time zone is changed.
- C. The Unity management server was not restarted before time zone changes took effect.
- D. The Unity system time is not set correctly and must be updated under system settings.
Answer: B
Explanation:
Explanation
When the Schedule Time Zone is changed under the Settings menu, it only affects the display of the time zone and the creation of new snapshot schedules. Existing snapshot schedules are not automatically adjusted to the new time zone, and will continue to run at the same absolute time as before. For example, if a snapshot schedule was created to run every day at 10:00 AM inGMT+1, and the Schedule Time Zone was changed to GMT+2, the snapshot schedule will still run at 10:00 AM in GMT+1, which is 11:00 AM in GMT+2. To update the existing snapshot schedules to the new time zone, the administrator must edit each schedule manually and change the start time accordingly. References: Dell EMC Unity: Snapshots and Thin Clones1, page 16.
NEW QUESTION # 19
Which disk format is recommended when deploying Dell UnityVSA OVA?
- A. Thick Provision Eager Zeroed
- B. Thick Provision Lazy Zeroed
- C. Thin Provision
Answer: A
Explanation:
Explanation
When deploying Dell UnityVSA OVA, the recommended disk format is Thick Provision Eager Zeroed, which allocates and zeroes out all the space for the virtual disks at the time of creation. This ensures better performance and avoids potential issues with thin provisioning on the underlying storage. Thin Provision and Thick Provision Lazy Zeroed are not recommended, as they may cause performance degradation and unexpected out-of-space errors.
References: [Dell EMC UnityVSA Installation Guide], [Dell EMC UnityVSA Best Practices Guide]
NEW QUESTION # 20
Which I/O modules does the Unity 380/380F system support?
- A. 12 Gb/s SAS
2-Port 100 GbE - B. 32 Gb/s Fibre Channel
2-Port 100 GbE - C. 32 Gb/s Fibre Channel
10 GbE Base-T - D. 12 Gb/s SAS
10 GbE Base-T
Answer: D
Explanation:
Explanation
The Unity 380/380F system supports two types of I/O modules: 12 Gb/s SAS back-end and 10 GbE Base-T front-end. The 12 Gb/s SAS back-end module provides connectivity to the disk drives and expansion enclosures, while the 10 GbE Base-T front-end module provides network connectivity to the hosts and clients.
The Unity 380/380F system has four I/O module slots, two for each SP. The 12 Gb/s SAS back-end module must be installed in slot 0 of each SP, and the 10 GbE Base-T front-end module can be installed in slot 1 of each SP. Therefore, the correct answer is C. 12 Gb/s SAS 10 GbE Base-T. References:
Dell EMC Unity: Hardware Information Guide
Dell EMC Unity: Installation Guide
NEW QUESTION # 21
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. 3.58 TB
- B. 3.2 TB
- C. I6.0 TB
- D. 1.39 TB
Answer: A
Explanation:
Explanation
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]
NEW QUESTION # 22
A company needs to expand their dynamic pool by 10 TB. The current dynamic pool consists of 63 7.6 TB SSD drives that are configured for RAID 5 (12+1).
What is the minimum number of drives needed for the pool expansion?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
Explanation
To expand a dynamic pool, the number of drives added must be equal to or greater than the stripe width of the pool. The stripe width is the number of data drives plus the number of parity drives in a RAID group. In this case, the stripe width is 12 + 1 = 13. Therefore, the minimum number of drives needed for the pool expansion is 13. References: Dell EMC Unity: Dynamic Pools Technical White Paper1, page 8.
NEW QUESTION # 23
Which is the preferred FC Port for synchronous replication for a Dell Unity XT 380 system?
- A. Fibre Channel Port 0 of I/O module 0
- B. Fibre Channel Port 4 of SPA and SPB www*
- C. Port 0 of I/O module 1
- D. Port 1 of I/O module 0
Answer: B
NEW QUESTION # 24
What is a characteristic of Host Groups?
- A. Access to block storage resources must be set before adding hosts to a host group.
- B. Block storage resources addedlo a host group are accessible to all the member hosts
- C. Block storage resources attached to one of the member hosts are accessible to the entire host group.
- D. Hosts added to a host group must not have mapped block storage resources.
Answer: B
Explanation:
Explanation
A characteristic of Host Groups is that block storage resources added to a host group are accessible to all the member hosts. A Host Group is a logical grouping of hosts that share the same access permissions and settings for block storage resources. By adding block storage resources to a host group, the user can simplify the management and allocation of storage for multiple hosts. Access to block storage resources does not need to be set before adding hosts to a host group, as the access permissions can be modified later. Hosts added to a host group can have mapped block storage resources, as long as they are not in conflict with the host group resources. Block storage resources attached to one of the member hosts are not accessible to the entire host group, unless they are also added to the host group.
References: [Dell EMC Unity: Host Configuration], [Dell EMC Unity: Block Storage Provisioning]
NEW QUESTION # 25
What is the correct sequence of steps to provision storage for SMB NAS clients?
Answer:
Explanation:
Explanation
The correct sequence of steps to provision storage for SMB NAS clients is:
Group hard drives into storage pools. This allows you to create a pool of storage resources that can be allocated to different types of storage objects, such as NAS servers, file systems, and LUNs.You can create different pools based on the performance and capacity requirements of your applications1 Create a NAS server for an existing pool. A NAS server is a logical entity that provides file-level access to clients using SMB, NFS, or FTP/SFTP protocols. You need to create a NAS server before you can create file systems and shares.You can specify the pool, network settings, domain membership, and other properties for the NAS server2 Create file systems and file system shares based on the supported NAS protocol. A file system is a logical container that stores files and folders on a NAS server. A file system share is a logical representation of a file system that can be accessed by clients using a specific protocol. For SMB NAS clients, you need to create SMB file system shares that support the SMB protocol.You can configure the share name, permissions, access policies, and other settings for the SMB share3 Map the shared file system to the client. This allows the client to access the files and folders on the SMB share using a drive letter or a UNC path.You can use the Windows Explorer or the net use command to map the shared file system to the client4
NEW QUESTION # 26
What is the maximum time difference allowed between the current system time (UTC) and the NTP server time during the initial configuration of a Dell Unity system?
- A. 17 min
- B. 7 min
- C. 5 min
- D. 15 min
Answer: A
Explanation:
Explanation
If the time difference between the current system (UTC) time and the NTP server time is too large (approximately 17 minutes), the user cannot configure an NTP server during initial configuration. The user will need to adjust the time while in "Set time manually" mode before changing to "Enable NTP synchronization". This is to avoid potential issues with data replication, snapshots, and audit logs that rely on accurate time stamps. References: Dell EMC Unity: How to change System Time from 'Set time manually' option to NTP2, page 1.
NEW QUESTION # 27
Which firewall ports are required to be open for a successful outbound connection when configuring integrated secure connect gateway?
- A. 80 and 9443
- B. 443 and 8443
- C. 9443 and 443
- D. 80 and 443
Answer: B
Explanation:
Explanation
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]
NEW QUESTION # 28
A storage administrator must configure replication from a production Dell Unity XT 680F to an offsite DR Dell Unity XT 480. Block resources must be replicated without data loss if the production site becomes unavailable. File resources can be replicated with an acceptable amount of data difference on the destination.
What replication configuration meets the requirements?
- A. Configure the replication connection mode to Both.
- B. Set an RPO of 0 on the synchronous replication sessions.
- C. Set Unisphere resource filtering to All.
- D. Configure the replication interfaces on the 4-port mezzanine card.
Answer: A
Explanation:
Explanation
To meet the requirements, the replication connection mode must be set to Both, which allows both synchronous and asynchronous replication sessions to be configured on the same connection. This way, block resources can use synchronous replication, which ensures zero data loss, and file resources can use asynchronous replication, which allows some data difference on the destination. Setting Unisphere resource filtering to All is not necessary, as it only affects the display of resources in the Unisphere GUI. Setting an RPO of 0 on the synchronous replication sessions is redundant, as synchronous replication always has an RPO of 0. Configuring the replication interfaces on the 4-port mezzanine card is not relevant, as it only affects the performance and availability of the replication network.
References: [Dell EMC Unity: Replication Technologies], [Dell EMC Unity: Unisphere Overview]
NEW 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
Answer: C
Explanation:
Explanation
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]
NEW QUESTION # 30
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Earning the EMC D-UN-DY-23 certification demonstrates to employers and clients that you have the knowledge and skills required to deploy and manage Dell EMC Unity storage systems confidently. Dell Unity Deploy 2023 Exam certification is beneficial for IT professionals who work with Dell EMC Unity storage systems regularly, such as system administrators, storage architects, and storage engineers. It is also a valuable certification for IT consultants and service providers who work with Dell EMC Unity storage systems in their client environments.
EMC D-UN-DY-23 exam is intended for IT professionals who have experience working with Dell EMC Unity systems, including storage architects, system administrators, and technical support engineers. Candidates are expected to have a strong understanding of storage networking, storage protocols, and virtualization technologies.
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