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Dell D-MSS-DS-23 Exam
Dell Midrange Storage Solutions Design 2023 (Page 6 )

Updated On: 11-Jan-2026
Page 4 of 23
PDF with 85 Questions

What information must a solution architect gather before they start designing a storage solution?

  1. Application response, LAN, and WAN requirements
  2. Network Infrastructure, Storage, and Customer workload performance requirements
  3. LAN, SAN, and IOPS requirements
  4. LAN, SAN, and Customer workload requirements

Answer(s): B

Explanation:

Before designing a storage solution, a solution architect must gather comprehensive information to ensure the system meets the customer's needs. The critical information includes:

Network Infrastructure: Understanding the existing network setup, including LAN and WAN configurations, is essential. This information helps in planning how the storage solution will integrate with the current network and support data traffic efficiently.

Storage Requirements: Detailed knowledge of the storage needs, including capacity, performance, and redundancy requirements, is crucial. This includes understanding the types of data to be stored, the expected data growth, and any specific storage technologies or features the customer may need.

Customer Workload Performance Requirements: Insight into the customer's workload characteristics, such as IOPS (Input/Output Operations Per Second), throughput, latency requirements, and peak usage times, is vital. This information helps in designing a storage solution that can handle the expected workloads without performance bottlenecks.

By gathering this information, the solution architect can design a tailored storage solution that meets the customer's performance and capacity needs while integrating seamlessly with their existing infrastructure.


Reference:

Dell Technologies PowerStore Documentation

Dell Entry-Level and Mid-Range Storage Community

Dell Storage Products Overview



A customer has a data center with applications running on 16 volumes that are presented from a Dell Unity XT system. They want to design a DR site within metro distance with zero RPO using storage- based replication. According to Dell best practices, which design approach minimizes the impact on storage performance?

  1. Use multiple ports per controller for replication.
  2. Include a Flash tier in a hybrid pool where synchronous replication is active.
  3. Use Thick volumes within the replication group.
  4. Create the synchronous replication session before filling the source storage object with data.

Answer(s): B

Explanation:

Dell Unity XT and DR Design:

For disaster recovery (DR) within a metro distance and zero Recovery Point Objective (RPO), synchronous replication is the preferred method.

Synchronous replication ensures that data is written to both the source and target volumes simultaneously, which requires high performance to minimize latency.

Best Practices for Minimizing Impact on Performance:

Multiple Ports per Controller: While this can improve throughput, it does not directly minimize the latency impact of synchronous replication.

Flash Tier in Hybrid Pool: Including a flash tier in a hybrid pool enhances performance significantly because flash drives offer lower latency and higher IOPS compared to traditional spinning disks. This is critical for synchronous replication scenarios where performance impact needs to be minimized.

Thick Volumes: Using thick volumes can provide consistent performance, but they do not inherently minimize the impact of synchronous replication.

Synchronous Replication Session: Creating the replication session before filling the source storage object with data is a procedural step and does not address performance during active replication.

Dell Midrange Storage


Reference:

Dell Unity XT best practices emphasize the use of flash tiers in hybrid pools to boost performance for demanding operations, including synchronous replication.

Resources from Dell Technologies' documentation on storage-based replication and performance optimization provide detailed insights.


Dell Unity XT Best Practices

Dell Community on Midrange Storage

Dell Storage Product Information



What non-Dell product reports can be generated using My Work?

  1. HP EVA and IBM SVC
  2. NetApp and HDS
  3. 3PAR and IBM XIV
  4. HDS and 3PAR

Answer(s): B

Explanation:

My Work Reporting Capabilities:

My Work is a Dell EMC tool that allows for the generation of various reports, including those from non-Dell storage products.

It provides a unified view and management capabilities for a range of storage systems, enhancing cross-platform monitoring and reporting.

Supported Non-Dell Products:

My Work can generate reports for a variety of non-Dell storage systems. Among the options listed, NetApp and Hitachi Data Systems (HDS) are supported for this purpose.

HP EVA, IBM SVC, 3PAR, and IBM XIV are not mentioned as directly supported in the context of My Work reporting capabilities within the provided references.

Dell Midrange Storage


Reference:

Dell EMC documentation and product guides detail the interoperability and reporting features of My Work, highlighting supported third-party storage systems.

Resources from Dell Technologies' support and community forums provide additional validation.


Dell EMC My Work Documentation

Dell Community on Storage Reporting



What chunk size of data is identified and moved temporarily to FAST Cache within Unity?

  1. 256 KB
  2. 32 KB
  3. 128 KB
  4. 64 KB

Answer(s): C

Explanation:

FAST Cache Mechanism:

FAST (Fully Automated Storage Tiering) Cache in Dell Unity systems temporarily holds frequently accessed data to improve read and write performance.

The data moved to FAST Cache is managed in chunks to optimize storage efficiency and performance.

Chunk Size for FAST Cache:

Dell Unity systems use a chunk size of 128 KB for data moved to FAST Cache. This size is optimized for balancing performance and storage management overhead.

Smaller chunks, such as 32 KB or 64 KB, might increase management overhead, while larger chunks like 256 KB could reduce the granularity of data movement and efficiency.

Dell Midrange Storage


Reference:

Dell Unity XT documentation provides detailed explanations on FAST Cache operations, including the specific chunk sizes used.

Additional technical resources from Dell Technologies offer insights into performance tuning and cache management.


Dell Unity XT FAST Cache Guide

Dell Community on Cache Management

Dell Storage Product Information



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