EMC EMC Certifications DES-1D12 Questions & Answers

• Question 141:

  A customer has a Dell EMC Unity 680F array with a single pool consisting of 10 drives configured with RAID 5 (4+1). What is the minimum number of drives required to expand the pool?

  A. 1

  B. 5

  C. 6

  D. 7

  Correct Answer: B

• Question 142:

  A storage administrator plans to complete a technology refresh from a Dell EqualLogic PS6100 to a Dell EMC PowerStore array. The affected hosts are running native MPIO. What is the recommended method to support an import to PowerStore?

  A. Install DSITV on the hosts

  B. Install EQL Hit Kit on the hosts

  C. Use Dell Storage Manager and select Online Import

  D. Install PowerStore ImportKit on the hosts

  Correct Answer: D

  An install of the PowerStore ImportKIT is required on the hosts to support import to PowerStore. Reference:https://docplayer.net/188347142-Dell-emc-powerstore-importing-external-storage-to-powerstore-guide.html

• Question 143:

  To which bus is the Dell EMC Unity 880F DPE connected?

  A. 0

  B. 49

  C. 89

  D. 99

  Correct Answer: D

  The DPE on 480/F, 680/F, and 880/F systems is internally connected to Bus 99 which is a separate bus than the first SAS expansion port that is connected to Bus 0. Therefore, the DPE is recognized by the system as Bus 99 Enclosure 0 while the first DAE connected to the first SAS expansion port would be Bus 0 Enclosure 0. This is different than X00/F, X50F, and 380/F systems. Furthermore, this means that the twenty-five drives in front of the DPE for 480/F, 680/F, and 880/F systems are internally recognized as Bus 99 Enclosure 0 Drive 0 -Bus 99 Enclosure 0 Drive 24. In Unisphere, the drives are seen DPE Drive 0 -DPE Drive 24

• Question 144:

  Which onboard Dell PowerStore components does the LCC interface sit between?

  A. HDD drives and CPU board

  B. SCM drives and PCIe

  C. SCM drives and SCSI drives

  D. CPU board and NVMe drives

  Correct Answer: D

  The LCC interface sits between the CPU board and the NVMe drives onboard Dell PowerStore components. The LCC interface is responsible for controlling the PCIe links between the CPU board and NVMe drives and allows for communication between the two. It also provides additional features such as error correction and power management for the NVMe drives.

• Question 145:

  From which storage platforms does a migration import data to a Dell PowerStore cluster?

  A. Dell EqualLogic PS series Unity, Dell Compellent SC Series, and PowerVault ME

  B. PowerMax. Dell EqualLogic PS senes Dell Compellent SC Series and Unity

  C. VNXe Unity Dell Compellent SC Series and Dell EqualLogic PS series

  D. Unity VNX2 Dell EqualLogic PS series and Dell Compellent SC Series

  Correct Answer: D

  A migration import allows data to be transferred from an existing storage platform to a Dell PowerStore cluster. The platforms that support migration import to a Dell PowerStore cluster include Unity, VNX2, Dell EqualLogic PS series and Dell Compellent SC Series. These platforms are EMC storage systems, which are now owned by Dell Technologies.

• Question 146:

  A customer wants to expand their Dell EMC Unity Hybrid system, which includes a pool of 64 drives in a RAID 5 (4+1) configuration. What is the minimum number of drives needed to expand the pool?

  A. 1

  B. 5

  C. 6

  D. 7

  Correct Answer: C

  DELL PDF document about dynamic pools: h16289-dell_emc_unity-dynamic_pools.pdf Page 20-21. The smallest RAID 5 stripe width the system supports is a 4+1. The smallest dynamic pool created with the RAID 5 4+1 configuration is 6 drives. The minimum drive count includes the number of drives specified in the stripe width, plus the hot spare capacity. The hot spare capacity is selected by the user at pool creation, and can either be set to 1 or 2 drives for every 32 drives in the pool.

• Question 147:

  A customer has a Dell Unity XT 380F system with a single pool that is built from 24x 800 GB and 24x 1 6 TB SAS Rash 3 drives and 14x 400 SAS Flash 2 drives. How many drive partnership groups were used to build the dynamic pool?

  A. 3

  B. 1

  C. 2

  D. 4

  Correct Answer: B

  In Dell Unity XT storage systems, a dynamic pool is built using drive partnership groups. A drive partnership group is a group of drives that are combined to create a pool. A drive partnership group can be made up of SAS, NL-SAS, or Flash drives. In this case, the customer has a single pool built from 24x 800 GB SAS Rash 3 drives and 24x 1 6 TB SAS Rash 3 drives, and 14x 400 SAS Flash 2 drives. All drives are SAS type, and it's only one partnership group.

• Question 148:

  How many PCI-E lanes are provided for Slot 0 and Slot 1 in Dell EMC Unity XT arrays?

  A. 8 for Slot 0; 8 for Slot 1

  B. 16 for Slot 0; 16 for Slot 1

  C. 8 for Slot 0; 16 for Slot 1

  D. 16 for Slot 0; 8 for Slot 1

  Correct Answer: D

  Reference: https://www.delltechnologies.com/en-gb/collaterals/unauth/technical-guides-support-information/products/storage/docu94617.pdf

• Question 149:

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

  A. NVMe SCM NVMe SSD, and SAS SSD

  B. SAS HDD. NVMe SSD NVMe SCM, and SAS SSD

  C. SAS SCM NVMe SSD and NVRAM

  D. SAS SSD NVMe SSD NVMe SCM, and NVRAM

  Correct Answer: A

  The Dell PowerStore supports a variety of media devices, including NVMe SCM, NVMe SSD, SAS SSD, SAS HDD, and NVRAM. Of these, NVMe SCM, NVMe SSD, and SAS SSD carry a FIPS Type D certification. This certification is a Federal Information Processing Standards (FIPS) certification that indicates that the device has passed a set of security standards established by the US government for use in sensitive, but unclassified data.

• Question 150:

  Which SAS SSDs are supported by Dell EMC PowerStore?

  A. 960 GB, 1920 GB, 3840 GB, and 7680 GB

  B. 960 GB, 1920 GB, and 3840 GB only

  C. 1920 GB, 3840 GB, 7680 GB, and 15360 GB

  D. 1920 GB, 3840 GB, and 7680 GB only

  Correct Answer: D

  3.4.4 SAS SSD Reference:https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h18149-dell-emc-powerstore-platform-introduction.pdf