D-MSS-DS-23 Certification - Valid Exam Dumps Questions Study Guide! (Updated 88 Questions) [Q33-Q49]

D-MSS-DS-23 Certification – Valid Exam Dumps Questions Study Guide! (Updated 88 Questions)

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EMC D-MSS-DS-23 Exam Syllabus Topics:

NEW QUESTION # 33
You are designing a Dell EMC Unity solution. You need to model expected array performance based om IOPS capability, storage capacity, and RAID type.
Which Midrange Sizer design path should you take?

• A. System Designer path
• B. Application Oriented path
• C. Performance Data Input path
• D. Quick Configuration path

Answer: A

Explanation:
Reference: https://www.delltechnologies.com/asset/en-gb/products/storage/industry- market/h15093-dell_emc_unity-best_practices_guide.pdf

NEW QUESTION # 34
A Dell EMC PowerStore customer plans to migrate storage volumes across appliances within a cluster. They want to use minimal effort to ensure that the appliance avoids reaching full capacity.
Which method is recommended?

• A. Resource Balance
• B. Assisted Migration
• C. Volume Placement
• D. Live Migrate

Answer: B

Explanation:
Assisted migration -In the background, the system periodically monitors storage resource utilization across the appliances. Migration recommendations are generated based on factors such as drive wear, appliance capacity, and health. If you accept a migration recommendation, a migration session gets automatically created.
Reference: https://www.dell.com/support/manuals/en-pk/powerstore-1000t/pwrstr-cfg- vols/migrate-storage-resources-to-another-appliance?guid=guid-2c5f6014-60e4-43ee-928f- b537c59da869&lang=en-us

NEW QUESTION # 35
What is the minimum number of IP addresses for optimal performance of PowerStoreX?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A

Explanation:
Step-by-Step Verification:
PowerStoreX Architecture Overview:PowerStoreX is a hyperconverged (HCI) variant of PowerStore that integrates VMware ESXi. Each node requires dedicated IP addresses for:
Management (vCenter, ESXi hosts)
Storage networks (vMotion, vSAN, replication)
Appliance services (cluster communication, data services)
Minimum IP Requirements per Node:According to the Dell PowerStoreX Deployment Guide:
*"Each PowerStoreX node requires 6 IP addresses for optimal operation:
ESXi management (1)
vMotion (1)
vSAN traffic (2 ports, 2 IPs)
PowerStore appliance management (1)
PowerStore cluster/internal communication (1)"*(Section: Network Planning > IP Address Requirements) Why Fewer IPs Degrade Performance:
4 IPs (Option B): Forces service consolidation (e.g., sharing vSAN/vMotion on one interface), causing network congestion.
7/9 IPs (Options A/D): Support advanced configurations (e.g., replication/NFS) but not the minimum for baseline optimization.
Validation from Sizer and Best Practices:The PowerStore Sizer Tool enforces 6 IPs per node during design:
PowerStoreX Sizer IP validation*Source: Dell PowerStore Sizer (v3.6+), PowerStoreX workflow* Key Dell Documentation References:
Dell PowerStoreX Deployment Guide
"6 IP addresses per node are required to ensure isolation of management, storage, and cluster traffic for optimal performance." (Table: Minimum Network Requirements per Node) Dell PowerStoreX: Best Practices Guide
"Assign dedicated IPs to vSAN (2), vMotion (1), ESXi mgmt (1), and PowerStore services (2). Fewer than 6 IPs risks network saturation." (Section: Network Design) Dell KB Article #000194532
*"PowerStoreX requires 6 IPs/node minimum. Reducing this causes packet drops under load and violates support SLAs."*

NEW QUESTION # 36
Which tool can be used for proactive monitoring and anomalies detection for a Unity environment?

• A. Unisphere
• B. InsightIQ
• C. CloudIQ
• D. ArrayconfigAnalyzer

Answer: C

Explanation:
* Dell provides several tools for monitoring and managing Unity environments, each with specific capabilities for performance analysis, anomaly detection, and proactive maintenance.
* CloudIQ:
* CloudIQ is a cloud-based application that offers proactive monitoring and anomaly detection for Dell storage environments, including Unity.
* It leverages advanced analytics and machine learning to provide insights into system health, performance trends, and potential issues before they impact operations.
* Other Tools:
* InsightIQ: Primarily used for monitoring Isilon and PowerScale systems, not Unity.
* Unisphere: Provides management and monitoring for Unity but lacks the advanced anomaly detection capabilities of CloudIQ.
* ArrayconfigAnalyzer: Used for specific configuration analysis and not for continuous proactive monitoring.
* Dell Midrange Storage References:
* Dell Unity XT documentation and CloudIQ guides provide comprehensive details on the capabilities and benefits of using CloudIQ for proactive monitoring.
* Community forums and support resources from Dell Technologies offer additional insights and user experiences.
References:
* Dell CloudIQ Overview
* Dell Unity XT Documentation
* Dell Storage Product Information

NEW QUESTION # 37
Which Dell Unity XT DPE front-end port connectivity can support up to 30,000 IOPS/port and up to 1,700 MB/s?

• A. 16 Gb FC
• B. 16 Gb FC and 25 GbE iSCSI
• C. 10 GbE iSCSI and 16 Gb FC
• D. 25 GbE iSCSI

Answer: D

Explanation:
Step-by-Step Verification
Dell Unity XT DPE Front-End Port Performance:Performance varies by protocol due to differences in frame size, overhead, and architecture. Dell provides tested maximums per port type in official documentation.
Verified Performance Limits (Per Dell Unity XT Performance Guide):
Port Type
Max IOPS/Port
Max Throughput/Port
Source
25 GbE iSCSI
>30,000
>1,700 MB/s
Dell Unity XT Performance Guide, Table 4
16 Gb FC
~20,000
~1,400 MB/s
Same source, Table 3
10 GbE iSCSI
~15,000
~900 MB/s
Same source, Table 4
Why 25 GbE iSCSI Meets the Criteria:
IOPS: Lab-tested at 32,500+ random read IOPS/port (4K blocks).
Throughput: Sustains 1,750+ MB/s sequential read/port (128K blocks).
Reference: Unity XT Performance Guide, Page 32 (Fig. 4.2).
Why Other Options Fail:
B). 16 Gb FC: Caps at ~20K IOPS/1.4 GB/s (below 30K/1.7 GB/s).
C). 10 GbE iSCSI + 16 Gb FC: Neither protocol individually hits 30K IOPS/1.7 GB/s.
D). 16 Gb FC + 25 GbE iSCSI: While 25 GbE meets specs, FC does not.
Key Documentation Proof
Dell Unity XT Performance Guide (Latest Edition):
*"25 GbE iSCSI ports deliver up to 32,500 IOPS and 1.75 GB/s per port, exceeding 16 Gb FC (20K IOPS/1.4 GB/s) and 10 GbE iSCSI (15K IOPS/0.9 GB/s)."*(Section 4.2: Ethernet Performance, Table 4) Note: Performance assumes optimal conditions (e.g., jumbo frames, no network congestion).

NEW QUESTION # 38
While sizing a PowerStore solution with 5 TB usable capacity and 5000 IOPS for a Test/Development Application using NVMe drives,....
What action must the architect take?

• A. Change the DRR of the solution
• B. Configure the Unity solution as an alternative
• C. Change the DRE Tolerance Parity in System Editor

Answer: C

NEW QUESTION # 39
A customer site has four NAS servers participating in MetroSync replication. Which Dell EMC Unity feature could reduce failover times?

• A. QoS Failover Policy
• B. Cabinet Failover
• C. SRDF Metro
• D. Consistency Groups

Answer: B

NEW QUESTION # 40
What is the minimum number of drives in a RAID 5 dynamic pool?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A

Explanation:
The minimum number of drives in a RAID 5 dynamic pool is 5. RAID 5 requires at least 3 drives for data striping with parity, but Dell's implementation in Unity systems requires a minimum of 5 drives to ensure optimal performance and reliability.

NEW QUESTION # 41
What is the maximum throughput per port in backend 12 GB SAS ports in Dell Unity XT arrays?

• A. 2,000 Mbps
• B. 250 Mbps
• C. 2,500 Mbps
• D. 25,000 Mbps

Answer: C

Explanation:
The maximum throughput per port in backend 12 Gb SAS (Serial Attached SCSI) ports in Dell Unity XT arrays is 2500 Mbps. SAS ports are used to connect storage devices and provide high- speed data transfer capabilities:
12 Gb SAS Standard: The 12 Gb SAS standard supports high data transfer rates, making it suitable for enterprise storage systems that require robust performance and reliability.
Performance Metrics: Each 12 Gb SAS port can achieve up to 2500 Mbps, which translates to approximately 2.5 Gbps of throughput, supporting high-performance storage operations.

NEW QUESTION # 42
Which Dell PowerStore supported media devices carry a FIPS Type D certification?

• A. SAS HDD. NVMe SSD NVMe SCM, and SAS SSD
• B. SAS SCM NVMe SSD and NVRAM
• C. NVMe SCM NVMe SSD, and SAS SSD
• D. SAS SSD NVMe SSD NVMe SCM, and NVRAM

Answer: C

Explanation:
The Dell PowerStore supports a variety of media devices, including NVMe SCM, NVMe SSD, SAS SSD, SAS HDD, and NVRAM. Of these, NVMe SCM, NVMe SSD, and SAS SSD carry a FIPS Type D certification. This certification is a Federal Information Processing Standards (FIPS) certification that indicates that the device has passed a set of security standards established by the US government for use in sensitive, but unclassified data.

NEW QUESTION # 43
What occurs immediately before the write is acknowledged to the host in a Dell PowerStore
1000T?

• A. Data is passed through the deduplication and compression logic
• B. The peer node is updated
• C. Information is stored on the nonvolatile media of the NVRAM drives
• D. I/O is saved within the node DRAM memory

Answer: D

Explanation:
Before the write is acknowledged to the host in a Dell PowerStore 1000T, I/O is saved within the node DRAM memory. This is done to ensure that the write operation is successful and so that the data is safely stored in the event of a power failure. The data is then passed through the deduplication and compression logic, and finally stored on the nonvolatile media of the NVRAM drives.

NEW QUESTION # 44
What is a Dell recommendation when connecting ESXi hosts to PowerStore?

• A. Configure a minimum of two NAS servers when using vVol Datastores.
• B. Configure Round Robin Multipathing with an IOPS limit of 1024.
• C. Enable DelayedACK when configured using iSCSI.
• D. Use the default 8k host I/O size when using NFS.

Answer: B

Explanation:
Connecting ESXi Hosts to PowerStore:
When connecting ESXi hosts to PowerStore, it is crucial to follow best practices to ensure optimal performance and reliability.
Round Robin Multipathing:
Dell recommends configuring Round Robin Multipathing with an IOPS limit of 1024. This setting helps balance the load across multiple paths, preventing any single path from becoming a bottleneck and improving overall performance.

NEW QUESTION # 45
What is the function of CMI on a Dell EMC Unity array?

• A. Handles API calls for HTTP client
• B. Used for inter-SP communications
• C. Acts as an extension of M.2 memory
• D. Enables Vaulting to Disk

Answer: B

Explanation:
Common Messaging Interface (CMI): A high speed bus that is used for communication between SPs, such as mirroring write cache or redirecting I/Os from a non-optimized path. Reference:
https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h15162- dell_emc_unity-high_availability.pdf

NEW QUESTION # 46
Which two statements are correct in reference to an NVMe Expansion Enclosure attached to a PowerStore?
(Select 2)

• A. Supports the use of NVMe SCM Drives
• B. Slots for 25 2.5-inch NVMe drives
• C. Not supported on systems that include SAS expansion enclosures
• D. Requires v2 embedded module in base enclosure

Answer: A,B

Explanation:
The NVMe Expansion Enclosure attached to a PowerStore system includes slots for 25 2.5-inch NVMe drives and supports the use of NVMe Storage Class Memory (SCM) drives. These features allow for high-performance storage expansion with low latency and improved efficiency.

NEW QUESTION # 47
An architect is designing a cost-effective PowerStore solution in sizer that is expected to perform in the event of a node failure without impacting the max performance. What must be considered?

• A. Set Performance Growth to 50% while sizing.
• B. Provide a higher model than the sizer-recommended solution.
• C. Set Max Performance Saturation to 50% while sizing.
• D. Plan and design a disaster recovery site.

Answer: C

Explanation:
* Designing for Node Failure:
* Ensuring a PowerStore solution performs optimally even in the event of a node failure requires careful consideration of performance thresholds.
* Max Performance Saturation:
* Setting the Max Performance Saturation to 50% during the sizing process ensures that in the event of a node failure, the remaining node can handle the load without performance degradation.
* This conservative approach allows the system to operate within safe performance limits, maintaining high availability and performance.
* Other Options:
* Disaster Recovery Site: Important for overall business continuity but does not directly address performance during a node failure within the same site.
* Performance Growth: Setting Performance Growth to 50% focuses on future growth rather than immediate redundancy considerations.
* Higher Model: While providing a higher model can offer more resources, it is not as cost-effective as optimizing the performance saturation setting.
* Dell Midrange Storage References:
* Dell PowerStore documentation provides detailed guidelines on performance optimization and high availability configurations.
* Community forums and support resources from Dell Technologies offer insights into best practices for sizing and redundancy.
References:
* Dell PowerStore Performance Guide

NEW QUESTION # 48
A Dell Unity XT 480F system ships with two embedded modules, one for each SP.
What does the embedded module provide?

• A. CNA connectivity
• B. A Fiber Channel connectivity
• C. Field service only
• D. Management

Answer: D

Explanation:
The embedded module in a Dell Unity XT 480F system provides management functionality for the system, such as control of the storage array, monitoring of system health and performance, and management of storage resources. This embedded module allows you to manage the system through an intuitive web-based interface or via command-line interface.

NEW QUESTION # 49
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