D-MSS-DS-23 Exam Dumps - EMC Storage Administrator Questions and Answers

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 References:

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

References:

Dell PowerStore Clustering Guide

Dell Community on PowerStore Clusters

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Higher capacity drives in a Dell Unity All Flash array provide the benefit of using less physical space. This is particularly advantageous in data centers where space is at a premium. By utilizing higher capacity drives, more storage capacity can be achieved within the same physical footprint, leading to greater efficiency and potential cost savings. Here’s why higher capacity drives are beneficial:

Space Efficiency:Higher capacity drives allow for more data to be stored in fewer drives, conserving rack space.

Cost Savings:Fewer drives can reduce power and cooling requirements, leading to operational cost savings.

Scalability:Higher capacity drives enable easier scalability as storage needs grow, without requiring additional physical space.

References:

Dell Technologies Unity All Flash Array Benefits

Dell Entry-Level and Mid-Range Storage Community

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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.

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.

References:

Dell Technologies Unity iSCSI Best Practices

Dell Entry-Level and Mid-Range Storage Community

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When designing a Dell Unity XT 480 using the System Designer option of Sizer, the recommended minimum amount of Flash to specify is 15%. This ensures that there is sufficient flash capacity to handle performance-intensive workloads and provides a good balance between performance and cost. Flash storage is crucial for achieving high IOPS and low latency in the storage system. Reference:Dell Unity XT Sizing Guide

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