Dell EMC D-MSS-DS-23 Exam Practice Test Instant Access

Question 1

What are differences between the Dell Unity XT 380F array and the Dell Unity XT 880F array?

ADell Unity XT 380F has converged network adapter ports. Dell Unity XT 880F has embedded mezzanine ports.

BDell Unity XT 380F supports dynamic storage pools. Dell Unity XT 880F does not support dynamic storage pools.

CDell Unity XT 380F has embedded mezzanine ports. Dell Unity XT 880F has converged network adapter ports.

DDell Unity XT 380F does not support dynamic storage pools. Dell Unity XT 880F supports dynamic storage pools.

Answer : A

The Dell Unity XT 380F array is equipped with converged network adapter (CNA) ports, while the Dell Unity XT 880F array features embedded mezzanine ports. These differences in port configurations reflect the varied performance and connectivity options available in different models of the Unity XT series.

Dell EMC Unity XT Specification Sheet.

Dell EMC Unity XT Configuration Guide.

Question 2

Which parameters can be defined when sizing a Dell Unity XT solution using the Simple Performance method?

ARead size (KB) Target IOPS

BWrite size (KB) Initial capacity (TB)

CApplication workload type Yearly growth rate (%)

DDays hot Number of LUNs

Answer : A

When sizing a Dell Unity XT solution using the Simple Performance method, parameters such as Read size (KB) and Target IOPS can be defined. The Simple Performance method focuses on understanding the expected IOPS (Input/Output Operations Per Second) and read size to ensure that the system is sized appropriately to meet performance requirements. This approach helps in configuring the storage system to handle the expected workload efficiently.

Question 3

A technical architect is designing a Dell Unity XT 480 using the System Designer option of Sizer. What is the recommended minimum amount of Flash that they should specify?

A5%

B10%

C15%

D7%

Answer : C

When designing a Dell Unity XT 480 using the System Designer option of Sizer, the recommended minimum amount of Flash to specify is 15%. This ensures that there is sufficient flash capacity to handle performance-intensive workloads and provides a good balance between performance and cost. Flash storage is crucial for achieving high IOPS and low latency in the storage system. Reference: Dell Unity XT Sizing Guide

Question 4

A customer has a data center with 30 different applications running on 30 volumes presented from PowerStore. They want to design a DR site within 300 km with 15 min RPO using storage-based asynchronous replication. Which protection policy design leads to most stable storage performance?

ACreate 15 protection policies that are assigned to a pair of volumes, each scheduled with a one minute shift from each other.

BCreate two protection policies that are assigned to 15 volumes, each scheduled with a five minute shift from each other.

CCreate a single protection policy assigned to 30 volumes, each scheduled with a five minute shift from each other.

DCreate 30 protection policies that are assigned to a single volume, each scheduled with a one minute shift from each other.

Answer : C

In a scenario where a customer needs to design a DR site with a 15-minute RPO using storage-based asynchronous replication, creating a single protection policy assigned to 30 volumes with a five-minute shift between each volume is the most stable design. This approach ensures that the replication load is evenly distributed over time, minimizing the impact on storage performance.

Dell PowerStore Asynchronous Replication Best Practices.

Dell Technologies documentation on protection policies and replication strategies.

Question 5

What initiates an automatic NAS server failover to the peer SP?

AAssisted internal migration

BNetwork link failure

CSP hardware fault

DResource balancing algorithm

Answer : C

An automatic NAS server failover to the peer Storage Processor (SP) is initiated by an SP hardware fault. This failover mechanism ensures high availability and continuous access to data by moving the NAS server's operations to the functioning SP when a hardware fault is detected in the primary SP.

Dell EMC Unity NAS Server High Availability Guide.

Dell Technologies documentation on NAS server failover.

Question 6

What result is obtained by multiplying the VM count by the Capacity per VM in a PowerStore system?

AUsable Capacity

BRaw Capacity

CEffective Capacity

Answer : A

In a PowerStore system, multiplying the VM count by the Capacity per VM gives the Usable Capacity. Usable Capacity represents the actual storage capacity available for use by the virtual machines, taking into account any overheads, data protection mechanisms, and efficiency features such as deduplication and compression. Reference: Dell PowerStore Capacity Planning Guide

Question 7

Which two parameters avoid bottlenecks and improve performance when sizing Dell Unity XT storage solutions? (Select 2)

ANetwork Bandwidth

BPort Utilization

CPort load balancing

DNetwork Latency

EWorkload Types

Answer : B

When sizing Dell Unity XT storage solutions, avoiding bottlenecks and improving performance can be achieved by considering the following parameters:

Port Utilization: Ensuring that the storage system's ports are utilized efficiently helps in distributing the workload evenly across available resources, preventing any single port from becoming a bottleneck.

Workload Types: Understanding and categorizing different workload types (e.g., random vs. sequential, read vs. write) allows for better allocation of resources and tuning of the storage system to handle specific performance requirements.

Dell Technologies Unity XT Sizing Guide

Dell Entry-Level and Mid-Range Storage Community

Dell EMC Dell Midrange Storage Solutions Design 2023 D-MSS-DS-23 Exam Practice Test