QUESTION: 5

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?

Change the DRE Tolerance Parity in System Editor.
Configure the Unity solution as an alternative.
Change the DRR of the solution.

Answer(s): C

Explanation:

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

Reference:

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.

Dell PowerStore Overview

Dell Community on Midrange Storage

Dell Storage Product Information

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QUESTION: 6

A technical architect is working with a customer to design a Dell Unity XT solution. The customer is concerned about enabling the data reduction storage service.
What system condition should the architect recommend for enabling data reduction?

CPU utilization above 80%
Free capacity above 80%
Free capacity at or less than 50% free capacity
CPU utilization at or less than 50%

Answer(s): D

Explanation:

Data Reduction in Dell Unity XT:

Data reduction technologies (deduplication and compression) are resource-intensive operations that require careful consideration of system conditions before enabling.

Efficient data reduction improves storage utilization and performance but can significantly impact CPU resources.

Enabling Data Reduction:

The ideal condition for enabling data reduction on a Dell Unity XT system is when the CPU utilization is manageable.

A CPU utilization at or less than 50% ensures that the system has enough headroom to handle the additional processing load without compromising overall performance.

System Conditions:

CPU utilization above 80%: Enabling data reduction under high CPU load can degrade performance and lead to system instability.

Free capacity above 80%: High free capacity does not directly impact the ability to enable data reduction but does indicate ample storage space.

Free capacity at or less than 50%: Lower free capacity might indicate higher utilization, which can stress the system when data reduction is enabled.

CPU utilization at or less than 50%: This condition is optimal for ensuring that the system can efficiently manage data reduction processes without adverse effects.

Dell Midrange Storage

Reference:

Dell Unity XT documentation provides clear guidelines on performance tuning and best practices for enabling data reduction.

Additional resources from Dell's community forums and product support pages offer insights into real-world configurations and expert recommendations.

Dell Unity XT Performance Guide

Dell Entry-Level and Mid-Range Community

Dell Storage Produc

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QUESTION: 7

A PowerStore solution must support hosts using 100 Gb/s Eth connectivity and hosts using 16 Gb/s FC connectivity. How should the I/O Modules be populated according to Dell Best Practices?

100 Gb/s Eth I/O Module in Slot 0 and 16 Gb/s FC I/O Module in Slot 1
100 Gb/s Eth I/O Module in Slot 1 and 16 Gb/s FC I/O Module in Slot 0
100 Gb/s Eth and 16 Gb/s FC I/O Modules can be placed into any Slot

Answer(s): A

Explanation:

According to Dell best practices for PowerStore solutions, when supporting hosts that use both 100 Gb/s Ethernet (Eth) connectivity and 16 Gb/s Fibre Channel (FC) connectivity, the I/O modules should be populated as follows:

Slot 0: Install the 100 Gb/s Ethernet I/O module. This ensures that the high-speed Ethernet connections are handled by the first slot, which is typically prioritized for network connectivity.

Slot 1: Install the 16 Gb/s Fibre Channel I/O module. This setup leverages the capabilities of the second slot to manage Fibre Channel traffic efficiently.

This configuration ensures optimal performance and adherence to best practices, providing a balanced distribution of network and storage connectivity within the PowerStore system.

Reference:

Dell Technologies PowerStore Documentation

Dell Entry-Level and Mid-Range Storage Community

Dell Storage Products Overview

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QUESTION: 8

Which Dell PowerStore supported media devices carry a FIPS Type D certification?

SAS SCM, NVMe SSD, and NVRAM
SAS HDD, NVMe SSD, NVMe SCM, and SAS SSD
NVMe SCM, NVMe SSD, and SAS SSD
SAS SSD, NVMe SSD, NVMe SCM, and NVRAM

Answer(s): D

Explanation:

Dell PowerStore supports media devices that carry a FIPS Type D certification to ensure data security and compliance with Federal Information Processing Standards (FIPS). The certified media devices include:

SAS SSD: Serial Attached SCSI (SAS) Solid State Drives are commonly used in enterprise storage solutions for their reliability and performance.

NVMe SSD: Non-Volatile Memory Express (NVMe) Solid State Drives offer high-speed storage access and are optimized for performance.

NVMe SCM: NVMe Storage Class Memory provides a new tier of storage that bridges the gap between DRAM and traditional SSDs, offering both speed and persistence.

NVRAM: Non-Volatile Random Access Memory combines the speed of RAM with the persistence of flash storage, ensuring data is retained even after power loss.

These devices are FIPS Type D certified, ensuring they meet stringent security standards for data protection.

Reference:

Dell Technologies PowerStore Documentation

Dell Entry-Level and Mid-Range Storage Community

Dell Storage Products Overview

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QUESTION: 5

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QUESTION: 6

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QUESTION: 7

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QUESTION: 8

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