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DES-1D12
Specialist - Technology Architect Midrange Storage Solutions Exam Questions and Answers

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Viewing questions 11-20 out of questions

Questions # 11:

Which SAS SSDs are supported by Dell EMC PowerStore?

Options:

960 GB, 1920 GB, 3840 GB, and 7680 GB

960 GB, 1920 GB, and 3840 GB only

1920 GB, 3840 GB, 7680 GB, and 15360 GB

1920 GB, 3840 GB, and 7680 GB only

Answer

Explanation

3.4.4 SAS SSD

[Reference:https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h18149-dell-emc-powerstore-platform-introduction.pdf, , ]

Questions # 12:

Which Unity load balancing method will optimize performance in a customer environment if there are a limited number of open FC switch ports?

Options:

A Least I/O

Priority

Round Robin

Port to Core Affinity

Answer

Explanation

The best Unity load balancing method to optimize performance in a customer environment with a limited number of open FC switch ports is Port to Core Affinity. This method will assign the same port to the same core when possible. This allows the same switching resources to be used in the same cores, which will optimize performance due to reduced latency. Priority and Round Robin methods will also provide load balancing, but they are not as effective in a limited port environment. Least I/O is not recommended in this situation, as it will not provide adequate load balancing.

Questions # 13:

Match each Dell EMC Unity feature with its destination.

Question # 13

Options:

Answer

Answer:

Explanation

[Reference:, https://www.delltechnologies.com/resources/en-us/asset/white-papers/products/storage/h15572- dell_emc_unity-nas_capabilities.pdf, , ]

Questions # 14:

What are the two biggest factors that determine IOPS when using SSDs in a Dell EMC SC Series array?

Options:

Current latency and queue depth

Application block size and overall throughput

Multi-tenant arrays and tier configuration

Read/write percentage and peak workload

Answer

Explanation

The reason there is such a large range in the number of IOPS delivered by SSDs is the IOPS are truly dependent on the type of traffic the SC Series was designed to handle. The two biggest factors that will determine IOPS in an SSD environment are block size of the application and overall throughput.

[Reference: https://downloads.dell.com/manuals/common/sc-series-performance-availability-best-practices- dell-emc-4024-bp-sc_en-us.pdf, ]

Questions # 15:

What component or feature is provided by both the Dell EMC PowerStore 1000T array and the Dell EMC Unity XT 380 Series array?

Options:

Container Integration

Configured Block with Hypervisor

Unified System

NVMe disks

Answer

Explanation

"When positioning the 380 and 380F, keep in mind that they are not NVMe-ready and will not be upgradeable to support NMVe in the future.".

Questions # 16:

What is the purpose of the NVMe NVRAM drives in a Dell EMC PowerStore 1000 array?

Options:

Read cache and vaulting

Read cache and base OS

Write cache and base OS

Write cache and vaulting

Answer

Explanation

The base enclosure is an all-NVMe platform, capable of supporting NVMe SSD, NVMe SCM, and NVMe NVRAM drives. You can populate slots 0 through 20 with NVMe SSD or NVMe SCM drives. Slots 21 through 24 are reserved for NVMe NVRAM drives which serve as additional system write caching. PowerStore 1000 and PowerStore 3000 models contain two NVMe NVRAM drives in slots 23 and 24.

[Reference:https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h18149-dell-emc-powerstore-platform-introduction.pdf, ]

Questions # 17:

A Dell EMC Unity storage administrator has 10 hosts. One of the hosts experiences occasional, huge IO bursts.

What is a best practice for avoiding performance issues during these burst periods?

Options:

Enabling Quality of Service (QoS) will limit the burst problem

Quality of Service (QoS) is enabled by default, so one only needs to configure burst settings

Enable Quality of Service (QoS) then limit I/O for the entire FC port

Enable Quality of Service (QoS) then configure burst settings

Answer

Questions # 18:

For Dell EMC SC Series arrays, what is the minimum percentage of total system IOPS that should be applied to Tier 3 drives?

Options:

15%

20%

25%

100%

Answer

Explanation

"As a standard, tier 3 drives should encompass a minimum of 20% system IOPS potential."

Questions # 19:

A customer must protect file storage resources through asynchronous replication to other Dell Unity XT systems in different locations.

What is the maximum number of remote systems that can be configured?

Options:

Answer

Explanation

This allows the customer to protect their file storage resources through asynchronous replication to other Dell Unity XT systems in different locations, providing a high level of data protection and disaster recovery capabilities. The asynchronous replication feature allows the customer to replicate data between systems in a way that does not affect performance, and it allows them to recover quickly from a disaster or outage.

Questions # 20:

You are designing a Dell EMC Unity solution. You need to predict its expected performance based on workload, number o and type of drives, and RAID protection.

Which design path on the Midrange Sizer should you take?