Dell EMC D-MSS-DS-23 Exam Questions Instant Access

Question 1

For a PowerStore 3200T running Block Workloads, which two options does Sizer take into consideration to equate the performance for each workload? (Select 2)

AThroughput

BFrontend Performance Saturation

CResponse Time

DStorage Performance Saturation
For a PowerStore 3200T running block workloads, the Sizer tool takes into consideration several factors to equate the performance for each workload. The two main options are:
Throughput: This refers to the amount of data that can be processed by the system in a given period. It is a critical measure of the storage system's capability to handle large volumes of data efficiently.
Response Time: This metric measures the time taken to complete an I/O operation from the moment it is initiated. It is essential for assessing the performance of latency-sensitive applications.
These parameters help ensure that the storage solution is designed to meet the performance requirements of the workload, balancing between high throughput and low response times.

Answer : A, C

Dell Technologies PowerStore Sizer Tool Documentation

Question 2

Which sizer option supports configuration of a Midrange solution with hybrid dynamic pools?

AAdvanced Performance

BQuick Configuration

CSystem Designer

DSimple Performance

Answer : B

The 'Quick Configuration' sizer option supports the configuration of a midrange solution with hybrid dynamic pools. This option allows for a streamlined setup process, making it easier to configure storage pools that combine both SSDs and HDDs for optimized performance and capacity.

Dell EMC Unity Sizing Guide.

Dell Technologies documentation on storage pool configuration.

Question 3

Which Dell PowerStore supported media devices carry a FIPS Type D certification?

ASAS SCM, NVMe SSD, and NVRAM

BSAS HDD, NVMe SSD, NVMe SCM, and SAS SSD

CNVMe SCM, NVMe SSD, and SAS SSD

DSAS SSD, NVMe SSD, NVMe SCM, and NVRAM

Answer : D

Dell PowerStore supports media devices that carry a FIPS Type D certification to ensure data security and compliance with Federal Information Processing Standards (FIPS). The certified media devices include:

SAS SSD: Serial Attached SCSI (SAS) Solid State Drives are commonly used in enterprise storage solutions for their reliability and performance.

NVMe SSD: Non-Volatile Memory Express (NVMe) Solid State Drives offer high-speed storage access and are optimized for performance.

NVMe SCM: NVMe Storage Class Memory provides a new tier of storage that bridges the gap between DRAM and traditional SSDs, offering both speed and persistence.

NVRAM: Non-Volatile Random Access Memory combines the speed of RAM with the persistence of flash storage, ensuring data is retained even after power loss.

These devices are FIPS Type D certified, ensuring they meet stringent security standards for data protection.

Dell Technologies PowerStore Documentation

Dell Entry-Level and Mid-Range Storage Community

Dell Storage Products Overview

Question 4

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

A2,000 Mbps

B2,500 Mbps

C25,000 Mbps

D250 Mbps

Answer : B

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.

Dell Technologies Unity XT Technical Specifications

Dell Entry-Level and Mid-Range Storage Community

Question 5

What details are covered in My Work Environmental Reports?

AInteroperability and Migrations readiness

BNon-Dell product configurations

CSwitch configuration and VPLEX configuration

DSwitch configuration and Host configuration

Answer : D

My Work Environmental Reports' typically cover essential configuration details relevant to Dell storage solutions, including switch configuration and host configuration. These reports are designed to ensure that the environment is set up correctly for optimal performance and interoperability with Dell storage products.

Dell Technologies documentation on My Work Environmental Reports.

Dell Midrange Storage best practices guide.

Question 6

What is skew?

AUniform distribution of I/O over storage capacity

BSustained per-port IOPS

CBursty per-port IOPS

DNon-uniform distribution of I/O over storage capacity

Answer : D

Skew refers to the non-uniform distribution of I/O over storage capacity. In storage systems, skew is an important factor to consider as it indicates that certain areas of the storage receive more I/O operations than others. This can lead to performance hotspots and affect the overall efficiency of the storage system. Managing skew is essential to ensure balanced performance across the storage array. Reference: Dell Midrange Storage Performance Guide

Question 7

When designing a system to support Oracle OLAP Workload for a new customer with no I/O details, what are the default selections for the I/O profile input in sizer?

ASequential Read: 70% at 8 KiB Sequential Write: 30% at 8 KiB

BRandom Read: 70% at 8 KiB Random Write: 30% at 8 KiB

CSequential Read: 80% at 8 KiB Sequential Write: 20% at 8 KiB

DRandom Read: 50% at 32 KiB Random Write: 50% at 32 KiB

Answer : B

When designing a system to support an Oracle OLAP (Online Analytical Processing) Workload for a new customer without specific I/O details, the default selections for the I/O profile input in the sizer tool are typically set to 'Random Read: 70% at 8 KiB, Random Write: 30% at 8 KiB.' Here's a detailed explanation:

Oracle OLAP Workload Characteristics: OLAP workloads generally involve heavy read operations with a focus on retrieving and analyzing large datasets. The read operations are often random due to the nature of querying various parts of the data.

Default I/O Profile Selection:

Random Read: 70% - This reflects the high read intensity typical of OLAP workloads, where data is accessed non-sequentially.

Random Write: 30% - Although less frequent than reads, writes still occur randomly as new data is added or existing data is updated.

Sizer Tool Configuration: The Dell sizer tool uses these default I/O profile settings to estimate the required storage performance and capacity. This helps in designing a system that can handle the expected workload efficiently.

Performance Optimization: The chosen I/O profile ensures that the storage system is optimized for the specific access patterns of OLAP workloads, providing a balanced approach to handling both reads and writes.

Dell Technologies PowerStore Documentation

Dell Entry-Level and Mid-Range Storage Community

Dell Storage Products Overview

By understanding the default I/O profile settings used by the sizer tool, system designers can ensure that the storage solution is well-suited to meet the demands of Oracle OLAP workloads.

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