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[Nov-2024] D-MSS-DS-23 Exam Dumps, D-MSS-DS-23 Practice Test Questions

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NO.11 A customer has three Dell PowerStore 1000Ts in a cluster and wants to add a PowerStore 5000X. What must they do?

 Create a cluster with the 5000X.

 Use the PowerStore CLI to add the appliance.

 Reconfigure the existing cluster.

 Use the PowerStore Manager to add the appliance.

* PowerStore Clustering:
* PowerStore appliances can be clustered to form a single management entity. However, adding different models within the same cluster follows specific guidelines.
* Cluster Compatibility:
* PowerStore 1000T and 5000X are different models with potentially different hardware configurations and capabilities.
* Dell recommends creating a new cluster with the PowerStore 5000X instead of mixing models within an existing cluster to ensure compatibility and optimal performance.
* Adding Appliances:
* Using the PowerStore CLI or PowerStore Manager to add appliances within the same model range is common, but mixing models generally requires creating a separate cluster.
* Dell Midrange Storage References:
* Dell PowerStore documentation provides guidelines on clustering and appliance management, highlighting the importance of model compatibility.
References:
* Dell PowerStore Clustering Guide
* Dell Community on PowerStore Clusters

NO.12 What is a characteristic of single-tier Flash on Dell EMC SC Series arrays?

 Supports both write-intensive and read-intensive SSDs in the same tier

 Snapshot data is kept on Tier1 in RAID 10 to optimize performance

 Read only data is migrated to lower tiers when a snapshot is taken

 Supports either write-intensive or read-intensive SSDs in the same tier

Reference: https://downloads.dell.com/manuals/common/sc-series-performance-availability-best- practices-dell-emc-4024-bp-sc_en-us.pdf (15)

NO.13 Which two options are input parameters for Unity Designer? (Select 2)

 NAS Server Nodes

 Enclosures

 Block and File resources

 Drive Modules

 Host Access Modes

Unity Designer is a tool used to design and configure Dell EMC Unity storage systems. Two of the key input parameters for Unity Designer are Block and File resources, which include configuring LUNs, NAS servers, and file systems, and Drive Modules, which refer to the physical drives and their configurations within the storage system.

NO.14 A solution architect is sizing a new Dell Unity XT array that requires hybrid dynamic pools. Which option must be selected in Midrange Sizer?

 Advanced Performance

 Application Oriented

 Quick Configuration

 System Designer

When sizing a new Dell Unity XT array that requires hybrid dynamic pools, the “Quick Configuration” option must be selected in the Midrange Sizer. This option streamlines the configuration process, allowing for a balanced and efficient setup of hybrid pools. Here’s why Quick Configuration is used:
* Simplifies Setup:Quick Configuration provides a straightforward approach to setting up the array, ensuring that the necessary parameters for hybrid dynamic pools are configured correctly without requiring in-depth manual input.
* Balanced Performance:The tool uses predefined settings and best practices to create a hybrid pool that balances performance and capacity, making it ideal for a variety of workloads.
References:
* Dell Technologies Midrange Sizer Tool Documentation
* Dell Entry-Level and Mid-Range Storage Community

NO.15 How many replication rules can be applied to a cluster in Dell EMC PowerStore?

 16

 24

 32

 64

NO.16 How many writes per day are SAS Flash 4 drives rated at?

 10

 3

 1

 5

SAS Flash 4 drives in Dell Unity XT arrays are rated at 1 write per day. This rating indicates the drive’s endurance level and how many times the entire drive capacity can be written to per day over its warranty period. This level of endurance is designed to balance performance, cost, and reliability for general-purpose workloads.

NO.17 Which Dell Unity XT DPE front-end port connectivity can support up to 30,000 IOPS/port and up to 1,700 MB/s?

 25 GbE iSCSI

 16 Gb FC

 10 GbE iSCSI and 16 Gb FC

 16 Gb FC and 25 GbE iSCSI

16 Gb Fibre Channel (FC) front-end port connectivity on Dell Unity XT DPE can support up to 30,000 IOPS per port and up to 1,700 MB/s. This level of performance makes it suitable for high-demand enterprise applications that require robust and fast storage networking.

NO.18 A PowerStore solution must support hosts using 100 Gb/s Eth connectivity and hosts using 16 Gb/s FC connectivity. How should the I/O Modules be populated according to Dell Best Practices?

 100 Gb/s Eth I/O Module in Slot 0 and 16 Gb/s FC I/O Module in Slot 1

 100 Gb/s Eth I/O Module in Slot 1 and 16 Gb/s FC I/O Module in Slot 0

 100 Gb/s Eth and 16 Gb/s FC I/O Modules can be placed into any Slot

According to Dell best practices for PowerStore solutions, when supporting hosts that use both 100 Gb/s Ethernet (Eth) connectivity and 16 Gb/s Fibre Channel (FC) connectivity, the I/O modules should be populated as follows:
* Slot 0:Install the 100 Gb/s Ethernet I/O module. This ensures that the high-speed Ethernet connections are handled by the first slot, which is typically prioritized for network connectivity.
* Slot 1:Install the 16 Gb/s Fibre Channel I/O module. This setup leverages the capabilities of the second slot to manage Fibre Channel traffic efficiently.
This configuration ensures optimal performance and adherence to best practices, providing a balanced distribution of network and storage connectivity within the PowerStore system.
References:
* Dell Technologies PowerStore Documentation
* Dell Entry-Level and Mid-Range Storage Community
* Dell Storage Products Overview

NO.19 From which Dell EMC storage system can a Dell EMC PowerStore array natively import data?

 VNX

 PowerVault

 VMAX

 VNX2

NO.20 What is done during the preconfigure step of a PowerStore block import migration?

 Network connectivity is set up

 Source system is added to the PowerStore

 Destination volume is created

 Import schedule is set

NO.21 When enabling a multi-protocol NAS implementation on a Dell EMC PowerStore array, what is required for an end-to-end mapping of a Windows system?

 Group ID (GID)

 User ID (UID)

 Active Directory (AD)

 Security ID (SID)

https://www.delltechnologies.com/en-us/collaterals/unauth/white-
papers/products/storage/h18155-dell-emc-powerstore-file-capabilities.pdf

NO.22 What are benefits of having a minimum of 5% flash component when designing a Dell Unity XT hybrid system?

 Enhances data reduction efficiency ratios and minimizes CPU utilization.

 Offsets some workload skew and accelerates metadata for buffer read misses.

 Optimizes FAST Cache page granularity and speeds data movement between tiers.

 Increases front-end queue depth and accelerates acknowledgments to hosts.

NO.23 Which network option should be configured to provide the best iSCSI performance on a Dell Unity XT array?

 iSCSI offload

 Single VLAN for all traffic

 Disable flow control

 Jumbo frames

For optimal iSCSI performance on a Dell Unity XT array, configuring jumbo frames is recommended. Jumbo frames allow for larger packets of data to be sent over the network, reducing the CPU load on both the storage array and the host, and improving overall throughput. Configuring jumbo frames typically involves setting the MTU (Maximum Transmission Unit) to 9000 bytes on all network devices along the path.

NO.24 On what host operating systems can the Grab tool run?

 OS/390, Windows, and Linux

 ESXi, ChromeOS, and OS/390

 Linus, macOS, and Tru64

 Windows, UNIX, and ESXi

NO.25 What is a characteristic of tenant traffic on a Dell EMC Unity array?

 Separated by the associated VLANs at the Linux Kernel layer

 Separated by the associated subnet providing data separation with increasing security at the network layer

 Separated by one associated VLAN providing data separation with increasing security at the Linux Kernel layer

 Separated by the associated subnet at the Linux Kernel layer

NO.26 When implementing FAST VP, which Dell EMC best practices should be followed?

 Use the Start High then Auto Tier policy
Maintain at least 15 percent pool capacity

 Use the Auto Tier policy – Schedule relocations continually during normal operations

 Use the Start High then Auto Tier policy
Maintain at least 10 percent pool capacity

 Use the Start High then Auto Tier policy
Maintain at least 5 percent pool capacity

Explanation: https://www.dell.com/community/VNX/FAST-VP/td-p/6953079

NO.27 Which SAS SSDs are supported by Dell EMC PowerStore?

 960 GB, 1920 GB, 3840 GB, and 7680 GB

 960 GB, 1920 GB, and 3840 GB only

 1920 GB, 3840 GB, 7680 GB, and 15360 GB

 1920 GB, 3840 GB, and 7680 GB only

https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h18149-dell-emc-powerstore-platform-introduction.pdf

NO.28 On what host operating systems can the Grab tool run?

 Linux, macOS, and Tru64

 OS/390, Windows, and Linux

 Windows, UNIX, and ESXi

 ESXi, ChromeOS, and OS/390

* Grab Tool Overview:
* The Grab tool is used for collecting diagnostic information from host systems to aid in troubleshooting and performance analysis.
* Supported Operating Systems:
* The Grab tool can run on a variety of host operating systems, including Windows, UNIX, and ESXi.
* This broad support ensures that administrators can gather necessary diagnostic data across different environments.
* Other Options:
* Linux, macOS, and Tru64: Not all these operating systems are supported by the Grab tool.
* OS/390, Windows, and Linux: OS/390 is not commonly supported.
* ESXi, ChromeOS, and OS/390: ChromeOS and OS/390 are not typically supported by the Grab tool.
* Dell Midrange Storage References:
* Dell documentation provides detailed instructions on using the Grab tool and lists the supported operating systems.
* Community forums and support resources from Dell Technologies offer additional insights and user experiences.
References:
* Dell Grab Tool Documentation

NO.29 What activity is initiated along with the site evaluation to ensure the solution being sold is supported in a customer environment?

 Implementation

 Remediation

 Sizing

 Design

NO.30 Which two attributes characterize I/O workloads for sizing the PowerStore storage solution? (Select 2)

 Extent of Serialization

 Splitting of Workloads

 Random vs. Sequential I/O

 Read vs. Write ratios

 CloudIQ Reporting

Two key attributes that characterize I/O workloads for sizing the PowerStore storage solution are Random vs.
Sequential I/O and Read vs. Write ratios. Understanding these attributes helps in accurately sizing the storage system to meet performance and capacity requirements.

NO.31 What benefit do higher capacity drives provide in a Dell Unity All Flash array?

 Larger I/O size

 Less physical space is used

 Efficient utilization of front end ports

NO.32 Which low-latency workload type is a best practice for an all-SCM Dell PowerStore array?

 Backup workloads

 Media streaming workloads

 Small block workloads

 Large block workloads

NO.33 What is the maximum RPO that can be configured on a Dell Unity XT block-asynchronous replication session?

 24 hours

 14 days

 7 days

 48 hours

* Asynchronous Replication in Dell Unity XT:
* Asynchronous replication provides data protection over longer distances with flexible RPO settings.
* Maximum RPO:
* The maximum Recovery Point Objective (RPO) that can be configured for a block-asynchronous replication session in Dell Unity XT is 7 days.
* This allows for up to a week’s worth of data to be replicated asynchronously, balancing data protection and replication overhead.
* Other Options:
* 24 hours, 48 hours, 14 days: These options do not align with the maximum configurable RPO of 7 days for asynchronous replication in Dell Unity XT.
* Dell Midrange Storage References:
* Dell Unity XT documentation provides detailed guidelines on configuring asynchronous replication and the available RPO settings.
* Community forums and support resources from Dell Technologies offer insights into best practices for data protection.
References:
* Dell Unity XT Replication Guide
* Dell Community on Data Protection

NO.34 In a Dell Unity XT system, SSD wear alerts are issued at 180-, 90-, 60-, and 30-day periods before the predicted end of life. What is automatically initiated on the spare drive at 30 days?

 Predictive Copy Operations

 Protective Copy Operations

 Preemptive Copy Operations

 Proactive Copy Operations

* SSD Wear Alerts in Unity XT:
* Dell Unity XT systems monitor SSD wear and issue alerts at various intervals (180, 90, 60, and 30 days) before the predicted end of life.
* Action at 30 Days:
* At the 30-day alert, the system automatically initiates Proactive Copy Operations to copy data from the wearing SSD to a spare drive, ensuring data integrity and continuity.
* Proactive Copy Operations:
* This proactive measure helps prevent data loss and maintains system performance by preparing for SSD replacement in advance.
* Dell Midrange Storage References:
* Dell Unity XT documentation provides detailed guidelines on SSD wear monitoring and the associated proactive measures.
* Community forums and support resources from Dell Technologies offer additional insights into system maintenance and proactive data protection.
References:
* Dell Unity XT SSD Wear Guide
* Dell Community on Storage Maintenance

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