Dell EMC D-MSS-DS-23 Dell Midrange Storage Solutions Design 2023 Exam Practice Test
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Question 1
A customer has a PowerStore 3200T system with only base enclosure consisting of 15 SSD 1920 GB drives and wants to expand the available capacity. What is the most cost-effective drive addition from a raw and usable capacity perspective to achieve the result wanted by the customer?
Answer : B
Adding 6 x 3840 GB NVMe SSD drives is the most cost-effective way to expand the capacity of a PowerStore 3200T system. This addition provides a significant increase in both raw and usable capacity, offering a better balance of performance and cost compared to smaller or more expensive drive options.
Dell EMC PowerStore Specification Sheet.
Dell EMC PowerStore Configuration Guide.
Question 2
Which sizer option supports configuration of a Midrange solution with hybrid dynamic pools?
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
What are differences between the Dell Unity XT 380F array and the Dell Unity XT 880F array?
Answer : A
The Dell Unity XT 380F array is equipped with converged network adapter (CNA) ports, while the Dell Unity XT 880F array features embedded mezzanine ports. These differences in port configurations reflect the varied performance and connectivity options available in different models of the Unity XT series.
Dell EMC Unity XT Specification Sheet.
Dell EMC Unity XT Configuration Guide.
Question 4
What initiates an automatic NAS server failover to the peer SP?
Answer : C
An automatic NAS server failover to the peer Storage Processor (SP) is initiated by an SP hardware fault. This failover mechanism ensures high availability and continuous access to data by moving the NAS server's operations to the functioning SP when a hardware fault is detected in the primary SP.
Dell EMC Unity NAS Server High Availability Guide.
Dell Technologies documentation on NAS server failover.
Question 5
Which Dell Unity XT DPE front-end port connectivity can support up to 30,000 IOPS/port and up to 1,700 MB/s?
Answer : B
16 Gb Fibre Channel (FC) front-end port connectivity on Dell Unity XT DPE can support up to 30,000 IOPS per port and up to 1,700 MB/s. This level of performance makes it suitable for high-demand enterprise applications that require robust and fast storage networking.
Dell EMC Unity XT Specification Sheet.
Dell EMC Unity XT Performance Guide.
Question 6
When designing a Metro Volume, what configuration must be implemented to avoid unnecessary storage and compute resource usage?
Answer : C
When designing a Metro Volume, placing the witness at a third site is crucial to avoid unnecessary storage and compute resource usage. The witness helps in maintaining quorum and ensuring the consistency of the Metro Volume in case of a site failure. Here's how it works:
Witness at Third Site: Placing the witness at a separate, third site ensures that it can independently verify the status of the primary and secondary sites, maintaining high availability and failover capabilities without consuming significant resources.
Avoids Resource Usage: By offloading the witness function to a third site, the primary and secondary sites can focus their resources on storage and compute tasks without the overhead of managing quorum.
A solution architect notices the PowerSizer is translating File Operations into IOPS for cluster and appliance summary details. IOPS are not impacting the summary MiB/s. What is the cause of this issue?
Answer : B
The issue arises because File Operations were entered into the PowerSizer tool, but MiB/s (Megabytes per second) was not entered. This causes the tool to translate File Operations into IOPS (Input/Output Operations Per Second) for the cluster and appliance summary details, but since MiB/s was not entered, it does not impact the summary throughput (MiB/s). Here's the detailed explanation:
File Operations Entry: When file operations are entered, the tool calculates the corresponding IOPS to summarize the workload's impact on the system.
MiB/s Entry Missing: If the MiB/s value is not provided, the tool cannot incorporate this metric into the overall summary, leading to a mismatch where IOPS are calculated but do not affect the MiB/s summary.
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