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  1. Home
  2. EMC Certification
  3. D-MSS-DS-23 Exam
  4. EMC.D-MSS-DS-23.v2024-11-25.q112 Dumps
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Question 71

What are characteristics of D@RE on a Dell EMC Unity array?

Correct Answer: D
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Question 72

While sizing a PowerStore solution with 5 TB usable capacity and 5000 IOPS for a Test/Development Application using NVMe drives, a solution architect observes that the recommended solution is 10 times the requested capacity. What action must the architect take?

Correct Answer: C
* Understanding DRR (Data Reduction Ratio):
* The Data Reduction Ratio (DRR) is a measure used in storage solutions to determine the efficiency of data reduction technologies such as deduplication and compression.
* In NVMe-based systems like PowerStore, achieving an optimal DRR is crucial for balancing capacity and performance.
* Sizing PowerStore Solutions:
* When sizing a PowerStore solution, it's essential to align the provided capacity and performance (IOPS) with the customer's requirements.
* If the recommended solution vastly exceeds the requested capacity (10 times more in this case), it indicates an overly conservative DRR assumption.
* Recommended Action:
* The architect should adjust the DRR to reflect a more accurate estimate that aligns with the customer's actual data reduction potential.
* This adjustment ensures that the solution is cost-effective and meets the performance criteria without excessive over-provisioning.
* Dell Midrange Storage References:
* Dell Technologies documentation on PowerStore solutions provides detailed guidelines on DRR configurations and best practices.
* Resources include sizing tools, system editor settings, and real-world case studies that illustrate appropriate DRR adjustments.
References:
* Dell PowerStore Overview
* Dell Community on Midrange Storage
* Dell Storage Product Information
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Question 73

Which disk format is recommended when deploying a Dual-SP Dell Unity VSA?

Correct Answer: A
When deploying a Dual-SP (Storage Processor) Dell Unity VSA (Virtual Storage Appliance), the recommended disk format is Thick Provision Eager Zeroed. This format pre-allocates storage capacity and zeros out all blocks at the time of creation, which ensures better performance and reliability compared to thin provisioning or lazy zeroed formats. This is especially important for high-performance storage environments.
Reference:Dell Unity VSA Deployment Guide
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Question 74

Which NAS protocols does Dell PowerStore support?

Correct Answer: C
Dell PowerStore supports a variety of NAS protocols to provide file access to clients.
These protocols include:
SMB (Server Message Block): This protocol is used to provide file and printer sharing on Windows-based systems.
NFSv3 (Network File System version 3): This is a standard protocol used to provide file access on UNIX-based systems.
NFSv4 (Network File System version 4): This is the latest version of the NFS protocol and it provides enhanced security and improved performance over previous versions. FTP (File Transfer Protocol): This is a standard protocol used to transfer files between computers over a network.
SFTP (Secure File Transfer Protocol): This is an extension of the FTP protocol that provides secure file transfer using SSH (Secure Shell) encryption.
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Question 75

What is the function of CMI on a Dell EMC Unity array?

Correct Answer: A
Common Messaging Interface (CMI): A high speed bus that is used for communication between SPs, such as mirroring write cache or redirecting I/Os from a non-optimized path. Reference:
https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h15162- dell_emc_unity-high_availability.pdf
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