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Download EMC : D-MSS-DS-23 Questions & Answers as PDF & Test Software

Last Updated: Sep 19, 2026

No. of Questions: 88 Questions & Answers with Testing Engine

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EMC D-MSS-DS-23 Exam Overview:

Certification Vendor:Dell Technologies
Exam Name:Dell Midrange Storage Solutions Design 2023
Exam Number:D-MSS-DS-23
Exam Duration:90-120
Available Languages:Chinese, English, Japanese, French
Exam Format:Scenario-based questions, Multiple Choice
Exam Price:USD 230 (approximate, varies by region)
Related Certifications:Dell Technologies Proven Professional Storage certifications
Certificate Validity Period:2 years (typical Dell Proven Professional validity)
Passing Score:80%
Real Exam Qty:80-90 (varies)
Recommended Training:PowerStore and Unity Design Courses (Dell On-Demand)
Midrange Storage Solution Design Training
Exam Registration:Dell Proven Professional Certification Portal
Dell Certification Exam Registration
Sample Questions:EMC D-MSS-DS-23 Sample Questions
Exam Way:Online proctored or Pearson VUE test center (varies by region)
Pre Condition:No strict prerequisites required, but Dell midrange storage knowledge or prior Dell Proven Professional certification is recommended
Official Syllabus URL:https://learning.dell.com/content/dell/en-us/home/certification-overview/available-exams/midrange-storage-solutions-design.html

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

SectionWeightObjectives
Midrange Storage Solutions (Unity & PowerStore)24%- Dell Unity
  • 1. NAS and block workloads design
    • 2. Architecture and deployment
      - Dell PowerStore
      • 1. Architecture and node clustering
        • 2. AppsON and container integration concepts
          Midrange Storage Best Practices36%- Storage configuration and architecture best practices
          • 1. Frontend and backend connectivity
            • 2. Storage pools and RAID design
              • 3. Capacity planning and utilization
                - Host and performance best practices
                • 1. Host multipathing and connectivity
                  • 2. Performance optimization concepts
                    - Data services design
                    • 1. Data reduction technologies
                      • 2. Snapshots and thin clones
                        • 3. Replication strategies
                          Planning, Sizing, and Design40%- Workload analysis and requirements gathering
                          • 1. IOPS, throughput, latency considerations
                            - Solution design principles
                            • 1. Scalability planning
                              • 2. Migration planning
                                • 3. High availability design
                                  - Sizing tools and methodologies
                                  • 1. Dell Unity Sizer
                                    • 2. PowerSizer for PowerStore

                                      D-MSS-DS-23 Exam FAQ: What to Know Before You Book

                                      The D-MSS-DS-23 exam, officially titled Dell Midrange Storage Solutions Design 2023, is the qualifying exam for the Dell Midrange Storage Solutions Design 2023 certification, which sits at the Professional level. Earning it shows employers that you have the skills the credential stands for, and it is a solid step forward on a EMC career path. It also connects to Dell Technologies Proven Professional Storage certifications, so the effort you put in now keeps paying off as you advance.

                                      The D-MSS-DS-23 exam gives you 80-90 (varies) questions to complete within 90-120. Do the math before exam day: divide the total time by the question count to set a steady per-question pace, and flag any item that stalls you so you can return to it after securing the easier points. The most reliable way to build that rhythm is a full timed practice test under the same limit, which is exactly what TestSimulate's test engines are designed for.

                                      The passing score for EMC Dell Midrange Storage Solutions Design 2023 is 80%, and the official registration fee is USD 230 (approximate, varies by region). Keep in mind that a retake means paying that fee again in full, which makes an honest self-check worthwhile: before you book, sit a timed practice test and make sure you are consistently scoring above the passing line with some margin to spare.

                                      According to the official requirements: No strict prerequisites required, but Dell midrange storage knowledge or prior Dell Proven Professional certification is recommended. Eligibility rules do change from time to time, so confirm the current details on the official exam page before you register.

                                      Registration for the D-MSS-DS-23 exam is handled through the official channels below:

                                      The exam is delivered in the following format: Online proctored or Pearson VUE test center (varies by region). Pick a date that leaves room for at least one full timed practice test beforehand.

                                      EMC recommends the following official training options for candidates preparing for EMC Dell Midrange Storage Solutions Design 2023:

                                      Courses build the foundation, but they work best alongside question practice. That is where TestSimulate comes in: the 88 practice questions in our D-MSS-DS-23 package let you rehearse the exam format at your own pace and see exactly where you stand.

                                      Yes — TestSimulate offers a free PDF demo of the EMC Dell Midrange Storage Solutions Design 2023 material, so you can review the question style and answer quality before you spend anything. After purchase, you also receive 365 days of free updates, and if your product expires you can extend the update service at a 50% discount from your member zone.

                                      If you take the corresponding exam within 60 days of your purchase and do not pass, you are covered by the 100% Money Back Guarantee under clear conditions. To claim a full refund, submit a scan of your exam enrollment slip and your official Score Report PDF within two days of the exam; requests are processed within seven days. Note that sitting the exam within three days of purchase is not eligible, purchases that were never followed by an exam sitting do not qualify, free materials and expired orders are excluded, and the candidate name must match the payer name. Prefer an exchange instead? You can swap your product for two free exam packages of equal value and keep your update service. Delivery is immediate: your D-MSS-DS-23 material is ready for instant download and is also emailed to you within one minute of payment — contact customer service if nothing arrives within two hours. There is no limit on the number of computers you can install it on.

                                      The current EMC Dell Midrange Storage Solutions Design 2023 syllabus is organized into 3 exam domains. The first three are:

                                      • Planning, Sizing, and Design (40%)
                                      • Midrange Storage Best Practices (36%)
                                      • Midrange Storage Solutions (Unity & PowerStore) (24%)

                                      For the full domain and subtopic breakdown, see the Exam Topics section above — that is the outline your TestSimulate practice questions are mapped to.

                                      EMC Dell Midrange Storage Solutions Design 2023 Sample Questions:

                                      Question #1

                                      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?

                                      • A. Use multiple ports per controller for replication.
                                      • B. Use Thick volumes within the replication group.
                                      • C. Include a Flash tier in a hybrid pool where synchronous replication is active.
                                      • D. Create the synchronous replication session before filling the source storage object with data.
                                      Reveal Solution  Discussion  0

                                      Correct Answer: C  🗳️

                                      Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

                                      Question #2

                                      Which tool can be used to migrate file data for Windows hosts from a legacy VNX array to a new Dell Unity XT array?

                                      • A. DataDobi
                                      • B. Rsync
                                      • C. SANCopy
                                      Reveal Solution  Discussion  0

                                      Correct Answer: A  🗳️

                                      Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

                                      Question #3

                                      What is the maximum supported drive configuration in the base enclosure of the PowerStore 3200T?

                                      • A. 21 x NVMe SSDs 2 x NVMe NVRAM
                                      • B. 23 x NVMe SSDs 2 x NVMe NVRAM
                                      • C. 23xNVMe SCMs 2 x NVMe NVRAM
                                      • D. 21 x NVMe SCMs 4 x NVMe NVRAM
                                      Reveal Solution  Discussion  0

                                      Correct Answer: A  🗳️

                                      Question #4

                                      What is the minimum number of drives in a RAID 5 dynamic pool?

                                      • A. 6
                                      • B. 5
                                      • C. 10
                                      • D. 9
                                      Reveal Solution  Discussion  0

                                      Correct Answer: B  🗳️

                                      Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

                                      Question #5

                                      Which two options are minimum requirements for PowerSizer Block workloads? (Select 2)

                                      • A. Split Workload
                                      • B. Effective Capacity
                                      • C. Capacity Growth
                                      • D. Performance Growth
                                      • E. Performance
                                      Reveal Solution  Discussion  0

                                      Correct Answer: B,D  🗳️

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