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EMC D-MSS-DS-23 Exam Syllabus Topics:
Topic
Details
Topic 1
- Dell Midrange Sizing Solutions: This section of the exam measures the skills of storage engineers and covers the use of tools like the Midrange Sizer for Unity to size solutions effectively. It includes design methods and deliverables associated with sizing storage solutions.
Topic 2
- Dell Midrange Storage Solutions Planning, Sizing, and Design: This section of the exam measures the skills of storage engineers and covers the planning, sizing, and design phases of a Midrange solution sales engagement. It emphasizes conducting site evaluations and remediation processes while considering performance parameters and environmental limits. A critical skill evaluated is accurately characterizing workloads to inform design decisions.
Topic 3
- Midrange Storage Solutions Best Practice: This section of the exam measures the skills of Dell Unity and PowerStore Midrange Storage Solutions professionals and covers best practice recommendations for system configuration and upgrades. It includes guidelines on hardware capacity, deployment models, clustering, and operating system upgrades. A key skill assessed is implementing effective backend connectivity solutions that enhance system performance.
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EMC Dell Midrange Storage Solutions Design 2023 Sample Questions (Q24-Q29):
NEW QUESTION # 24
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. Quick Configuration path
- B. Performance Data Input path
- C. System Designer path
- D. Application Oriented path
Answer: C
Explanation:
Reference: https://www.delltechnologies.com/asset/en-gb/products/storage/industry- market/h15093-dell_emc_unity-best_practices_guide.pdf
NEW QUESTION # 25
A customer site has four NAS servers participating in MetroSync replication. Which Dell EMC Unity feature could reduce failover times?
- A. Cabinet Failover
- B. SRDF Metro
- C. QoS Failover Policy
- D. Consistency Groups
Answer: A
NEW QUESTION # 26
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. Include a Flash tier in a hybrid pool where synchronous replication is active.
- B. Use Thick volumes within the replication group.
- C. Create the synchronous replication session before filling the source storage object with data.
- D. Use multiple ports per controller for replication.
Answer: A
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 References:
* 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.
References:
* Dell Unity XT Best Practices
* Dell Community on Midrange Storage
* Dell Storage Product Information
NEW QUESTION # 27
What is recommended maximum cable length for PowerStore back-end NVMe cabling to avoid performance issues?
- A. 10 meters
- B. 5 meters
- C. 100 meters
- D. 3 meters
Answer: A
Explanation:
The recommended maximum cable length for PowerStore back-end NVMe cabling to avoid performance issues is 10 meters. This recommendation helps to ensure signal integrity and optimal performance across the NVMe interface, which is critical for maintaining the high throughput and low latency characteristics of NVMe storage.
NEW QUESTION # 28
A customer is managing a Dell EMC SC7020 array running SCOS 7.2. The array is running out of capacity. The customer asks you to begin scoping the system for additional drives. What disk drive redundancy rule applies to 3.84 TB SSDs?
- A. Forced Non-Redundancy
- B. Default Single Redundancy
- C. Default Dual Redundancy
- D. Forced Dual Redundancy
Answer: C
NEW QUESTION # 29
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