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  3. DES-1D12

Dell DES-1D12 Exam (page: 6)
Dell Specialist - Technology Architect, Midrange Storage Solutions
Updated on: 15-Feb-2026

Viewing Page 6 of 31
DES-1D12 PDF 152 Questions

A storage administrator wants to do a tech refresh from a legacy EQL system to a new Dell EMC SC Series array.
What is needed to correctly size the new array?

  1. Latency
  2. Peak IOPS information
  3. Storage tiers
  4. Contract support end date

Answer(s): B

Explanation:

https://downloads.dell.com/manuals/common/sc-series-performance-availability-best-practices- dell-emc-4024-bp-sc_en-us.pdf
(1.9 Sizing an SC Series array for performance requirements - pag.9)



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

  1. Current latency and queue depth
  2. Application block size and overall throughput
  3. Multi-tenant arrays and tier configuration
  4. Read/write percentage and peak workload

Answer(s): B

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



Which QoS options are supported by Dell EMC Unity XT?

  1. VMFS Datastore and Storage Pool
  2. iSCSI and Attached Snapshot
  3. Individual LUN and iSCSI
  4. Individual LUN and Group LUN

Answer(s): D



At what granularity are blocks deduplicated on a Dell EMC PowerStore array?

  1. 4 KB
  2. 8 KB
  3. 32 KB
  4. 64 KB

Answer(s): A

Explanation:

https://www.delltechnologies.com/resources/en-us/asset/white-papers/products/storage/h18151- dell-emc-powerstore-data-efficiencies.pdf
Deduplication uses algorithms to analyze, perform pattern detection, and attempts to store only a single instance of data. In general deduplication can work at the block, bit-level, or file level. In PowerStore, deduplication works at the block level at 4 KB granularity.



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

  1. 15%
  2. 20%
  3. 25%
  4. 100%

Answer(s): B

Explanation:

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



Viewing Page 6 of 31



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