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D-MSS-DS-23 Dell Midrange Storage Solutions Design 2023 Question and Answers

Question # 4

A customer has a data center with 30 different applications running on 30 volumes presented from PowerStore. They want to design a DR site within 300 km with 15 min RPO using storage-based asynchronous replication. Which protection policy design leads to most stable storage performance?

A.

Create 15 protection policies that are assigned to a pair of volumes, each scheduled with a one minute shift from each other.

B.

Create two protection policies that are assigned to 15 volumes, each scheduled with a five minute shift from each other.

C.

Create a single protection policy assigned to 30 volumes, each scheduled with a five minute shift from each other.

D.

Create 30 protection policies that are assigned to a single volume, each scheduled with a one minute shift from each other.

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Question # 5

An architect is designing a cost-effective PowerStore solution in sizer that is expected to perform in the event of a node failure without impacting the max performance. What must be considered?

A.

Set Max Performance Saturation to 50% while sizing.

B.

Plan and design a disaster recovery site.

C.

Set Performance Growth to 50% while sizing.

D.

Provide a higher model than the sizer-recommended solution.

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Question # 6

What chunk size of data is identified and moved temporarily to FAST Cache within Unity?

A.

256 KB

B.

32 KB

C.

128 KB

D.

64 KB

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Question # 7

What are differences between the Dell Unity XT 380F array and the Dell Unity XT 880F array?

A.

Dell Unity XT 380F has converged network adapter ports. Dell Unity XT 880F has embedded mezzanine ports.

B.

Dell Unity XT 380F supports dynamic storage pools. Dell Unity XT 880F does not support dynamic storage pools.

C.

Dell Unity XT 380F has embedded mezzanine ports. Dell Unity XT 880F has converged network adapter ports.

D.

Dell Unity XT 380F does not support dynamic storage pools. Dell Unity XT 880F supports dynamic storage pools.

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Question # 8

What is the minimum number of drives in a RAID 6 dynamic pool?

A.

8

B.

9

C.

6

D.

7

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Question # 9

An application owner needs 10 volumes for their application to be created, and they must have snapshots taken simultaneously with write-order-consistency. Which feature in Dell PowerStore should be used to enable this requirement?

A.

Volume Groups

B.

Snapshot Groups

C.

Data Groups

D.

Consistency Groups

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Question # 10

A customer has a data center with applications running on 16 volumes that are presented from a Dell Unity XT system. They want to design a DR site within metro distance with zero RPO using storage-based replication. According to Dell best practices, which design approach minimizes the impact on storage performance?

A.

Use multiple ports per controller for replication.

B.

Include a Flash tier in a hybrid pool where synchronous replication is active.

C.

Use Thick volumes within the replication group.

D.

Create the synchronous replication session before filling the source storage object with data.

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Question # 11

Which two attributes characterize I/O workloads for sizing the PowerStore storage solution? (Select 2)

A.

Extent of Serialization

B.

Splitting of Workloads

C.

Random vs. Sequential I/O

D.

Read vs. Write ratios

E.

CloudIQ Reporting

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Question # 12

When designing a Metro Volume, what configuration must be implemented to avoid unnecessary storage and compute resource usage?

A.

Use MRU for PSP.

B.

Use DRS affinity rules.

C.

Place witness at a third site.

D.

Use storage containers.

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Question # 13

What is a Dell recommendation when connecting ESXi hosts to PowerStore?

A.

Configure Round Robin Multipathing with an IOPS limit of 1024.

B.

Enable DelayedACK when configured using iSCSI.

C.

Configure a minimum of two NAS servers when using vVol Datastores.

D.

Use the default 8k host I/O size when using NFS.

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Question # 14

Which network option should be configured to provide the best iSCSI performance on a Dell Unity XT array?

A.

iSCSI offload

B.

Single VLAN for all traffic

C.

Disable flow control

D.

Jumbo frames

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Question # 15

What is the minimum number of IP addresses for optimal performance of PowerStoreX?

A.

7

B.

4

C.

6

D.

9

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Question # 16

Which two parameters avoid bottlenecks and improve performance when sizing Dell Unity XT storage solutions? (Select 2)

A.

Network Bandwidth

B.

Port Utilization

C.

Port load balancing

D.

Network Latency

E.

Workload Types

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Question # 17

Which two features are supported by the Cloud IQ mobile App? (Select 2)

A.

Manage capacity, and performance details for the supported Dell storage platforms.

B.

Overview of health, capacity, and performance details for the supported Dell storage platforms.

C.

Allows users to email the recommended remediation to a colleague for help with performing the resolution.

D.

Allows users to set up access controls by assigning users to predefined roles.

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Question # 18

Which statement is true about dynamic node affinity?

A.

Maintains relatively consistent utilization, latency, and performance between both nodes.

B.

Automatically moves NAS servers to the peer node to balance the workload.

C.

Trespass affected block volumes between nodes.

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Question # 19

Which CPU family is used on a Dell Unity XT 480?

A.

Haswell

B.

Ice Lake

C.

Broadwell

D.

Skylake

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Question # 20

What is recommended maximum cable length for PowerStore back-end NVMe cabling to avoid performance issues?

A.

100 meters

B.

10 meters

C.

3 meters

D.

5 meters

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Question # 21

Which two statements are correct in reference to an NVMe Expansion Enclosure attached to a PowerStore? (Select 2)

A.

Slots for 25 2.5-inch NVMe drives

B.

Requires v2 embedded module in base enclosure

C.

Not supported on systems that include SAS expansion enclosures

D.

Supports the use of NVMe SCM Drives

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Question # 22

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?

A.

Change the DRE Tolerance Parity in System Editor.

B.

Configure the Unity solution as an alternative.

C.

Change the DRR of the solution.

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Question # 23

What details are covered in My Work Environmental Reports?

A.

Interoperability and Migrations readiness

B.

Non-Dell product configurations

C.

Switch configuration and VPLEX configuration

D.

Switch configuration and Host configuration

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Question # 24

Which two options are input parameters for Unity Designer? (Select 2)

A.

NAS Server Nodes

B.

Enclosures

C.

Block and File resources

D.

Drive Modules

E.

Host Access Modes

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Question # 25

Which two workload parameters are required to proceed with sizing for a PowerStore solution? (Select 2)

A.

Response time

B.

IOPS

C.

Effective Capacity

D.

Data reduction ratio

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