Dell EMC D-MSS-DS-23 Dell Midrange Storage Solutions Design 2023 Exam Practice Test

Answer : A

To provide the best performance on Dell Unity iSCSI connections, configuring Jumbo frames end-to-end is recommended. Jumbo frames allow for larger packet sizes than the standard 1500 bytes, typically up to 9000 bytes. This reduces the number of packets transmitted, decreases CPU utilization, and improves overall network efficiency. Here's how to configure Jumbo frames:

Switch Configuration: Enable Jumbo frames on all network switches that will handle iSCSI traffic.

Network Interface Configuration: Configure all network interfaces (NICs) on the storage system and the iSCSI hosts to support Jumbo frames.

End-to-End Consistency: Ensure that Jumbo frames are configured consistently across the entire network path from the storage system to the hosts to avoid fragmentation and performance degradation.

Dell Technologies Unity iSCSI Best Practices

Dell Entry-Level and Mid-Range Storage Community

Answer : A

PowerStore Clustering:

PowerStore appliances can be clustered to form a single management entity. However, adding different models within the same cluster follows specific guidelines.

Cluster Compatibility:

PowerStore 1000T and 5000X are different models with potentially different hardware configurations and capabilities.

Dell recommends creating a new cluster with the PowerStore 5000X instead of mixing models within an existing cluster to ensure compatibility and optimal performance.

Adding Appliances:

Using the PowerStore CLI or PowerStore Manager to add appliances within the same model range is common, but mixing models generally requires creating a separate cluster.

Dell Midrange Storage Reference:

Dell PowerStore documentation provides guidelines on clustering and appliance management, highlighting the importance of model compatibility.

Dell PowerStore Clustering Guide

Dell Community on PowerStore Clusters

Answer : A

Dell Unity XT DPE (Disk Processor Enclosure) front-end port connectivity options that can support up to 45000 IOPS per port and up to 1500 MB/s include both 16 Gb Fibre Channel (FC) and 25 GbE iSCSI. These connectivity options provide the necessary performance and bandwidth to handle high IOPS and throughput demands:

16 Gb Fibre Channel (FC): Known for high performance and low latency, 16 Gb FC ports are widely used in enterprise storage environments to support high IOPS and bandwidth.

25 GbE iSCSI: 25 Gigabit Ethernet iSCSI ports offer high-speed connectivity for IP-based storage networks, capable of supporting high throughput and IOPS requirements.

Dell Technologies Unity XT Specifications

Dell Entry-Level and Mid-Range Storage Community

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.

Dell Technologies Metro Volume Configuration Guide

Dell Entry-Level and Mid-Range Storage Community

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.

Answer : C

The command supportshow is used to gather comprehensive data from Brocade switches. This command collects extensive diagnostic information about the switch, including configuration details, hardware status, and various operational statistics. Here's a step-by-step explanation of the supportshow command:

Access the Brocade Switch: Connect to the Brocade switch via SSH or through a console connection.

Enter the Command: Type supportshow in the command line interface (CLI) and press Enter.

Data Collection: The command will begin collecting a wide array of information from the switch. This includes:

Hardware and firmware versions

Port status and configurations

Zoning information

Error logs and statistics

Environmental data (temperature, power supply status, etc.)

Output Review: The gathered data is typically extensive and can be used for troubleshooting, performance analysis, and ensuring the switch is operating correctly.

Save the Output: The output can be redirected to a file for later review or analysis by technical support teams.

Dell Technologies PowerStore Documentation

Dell Entry-Level and Mid-Range Storage Community

Dell Storage Products Overview

Answer : C

Recovery Point ObjectiveWhen you set up an asynchronous replication session, you can configure automatic synchronization based on the RPO. You can specify an RPO from a minimum of5 minutesup to a maximum of 1440 minutes (24 htours).