Realistic EMC DES-1D12 Testing Bible Online

NEW QUESTION 1
A customer has a Dell EMC SC9000 array with six SC420 enclosures running SCOS 7.3. The enclosure configuration is as follows:
Two enclosures have write-intensive SSDs
Four enclosures have read-intensive SSDs
What is recommended as a general guideline for making spare drive assignments?

• A. 2 spare drives per shell
• B. Dedicated spares are not required
• C. 2 spares per drive type per array
• D. 1 spare per drive type per shell

Answer: B

Explanation:
"SCOS 7.3, Distributed Sparing: eliminates the need for dedicated spares by giving customers the option to distribute sparing capacity across all drives in the array."

NEW QUESTION 2
What is a benefit of restoring data from a Dell EMC Unity snapshot?

• A. Can select which Consistency Group members have data restored
• B. Supports replication to up to 32 remote systems
• C. Enables efficient storage usage with 8 KB block granularity
• D. Does not require additional pool storage

Answer: D

NEW QUESTION 3
What is a feature of Dell EMC Unity unified snapshots?

• A. Delta set extension
• B. Copy on First Access
• C. Redirect on Write
• D. Copy on First Write

Answer: C

Explanation:
Reference; https://www.delltechnologies.com/en-ba/collaterals/unauth/white-papers/products/storage/h15089-dell_emc_unity-snapshots_and_thin_clones.pdf (7)

NEW QUESTION 4
What are the two biggest factors that determine IOPS when using SSDs in a Dell EMC SC Series array?

• A. Current latency and queue depth
• B. Application block size and overall throughput
• C. Multi-tenant arrays and tier configuration
• D. Read/write percentage and peak workload

Answer: 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.

NEW QUESTION 5
An ISP needs a data storage solution that allows them to set policies over resource usage. The solution needs to support network multi-tenancy while also providing full network failover protection.
What combination of Dell EMC SC Series features meets these requirements?

• A. Thin Replication and Storage Profiles
• B. VLAN Tagging and QoS
• C. Multi-protocol and Live Volume
• D. Replication and vVols

Answer: C

NEW QUESTION 6
A customer site has four NAS servers participating in MetroSync replication. Which Dell EMC Unity feature could reduce failover times?

• A. QoS Failover Policy
• B. Cabinet Failover
• C. SRDF Metro
• D. Consistency Groups

Answer: B

NEW QUESTION 7
To which bus is the Dell EMC Unity 880F DPE connected?

• A. 49
• B. 89
• C. 99

Answer: D

Explanation:
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

NEW QUESTION 8
When designing a Dell EMC SC Series system, which factors regarding general performance are important to understand?

• A. Write size and latency
• B. Block size and read size
• C. Latency and queue depth
• D. Transport and queue depth

Answer: C

Explanation:
"Whether gathering information or designing a system, it is important to understand two commonly used terms: Latency and queue depth"

NEW QUESTION 9
Which Dell EMC Unity storage array models support NVMe?

• A. 380, 880, and 880F
• B. 680F, 880, and 880F only
• C. 680, 680F, 880, and 880F
• D. 380, 380F, and 480F

Answer: C

Explanation:
https://delltechnologies.techdata.nl/app/uploads/2019/02/dell-emc-unity-xt-selling-guide.pdf

NEW QUESTION 10
A customer asks you about the maximum load of their new Dell EMC SC Series array. Which term should you use in response?

• A. MB
• B. IOPS
• C. CPU Cycles
• D. Latency

Answer: B

NEW QUESTION 11
You are designing a two-tiered Dell EMC SC Series solution that will be optimized for performance. You gather the necessary data from Live Optics and find that the read/write ratio is 80:20.
What approach is recommended?

• A. Size Tier 1 for 100% of the adjusted IOPS
• B. Use distributed adjusted IOPS for all tiers
• C. Use distributed adjusted IOPS for Tiers 1 and 2 only
• D. Size Tier 2 for 100% of the adjusted IOPS

Answer: A

Explanation:
"The engineer should design a system to handle all, or nearly all, IOPS in one particular tier"

NEW QUESTION 12
A Dell EMC PowerStore customer wants to schedule snapshots daily at 6 AM. Which snapshot frequency interval (in minutes) is available?

• A. 5
• B. 10
• C. 20
• D. 45

Answer: A

NEW QUESTION 13
Which Dell EMC Unity feature provides network high availability with active-passive ports when provisioning File storage for a NAS client?

• A. Redundant Interfaces
• B. Preferred Interfaces
• C. Link Aggregation
• D. Fail-safe Networking

Answer: D

Explanation:
Document: docu71319_dell-emc-unity-high-availability-a-detailed-review.pdf
Page: 20 FAIL SAFE NETWORKING (FSN) Dell EMC Unity OE version 4.2.1 introduces Fail Safe Networking (FSN). FSN is a high availability feature that extends link failover into the network by providing switch-level redundancy. FSN appears as a single link with a single MAC address and potentially multiple IP addresses. FSN can consists of Ethernet ports, link aggregations, or any combination of the two. FSN adds an extra layer of availability to link aggregations alone as link aggregations provide availability in the event of a port failure while FSN provides availability in the event of a switch failure. Each port or Link aggregation is considered as a single connection and only the primary port or link aggregation in an FSN is active at a time. All ports in an FSN must have the same MTU size, but the speed and duplex settings can vary.

NEW QUESTION 14
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?

• A. Latency
• B. Peak IOPS information
• C. Storage tiers
• D. Contract support end date

Answer: B

Explanation:
https://downloads.dell.com/manuals/common/sc-series-performance-availability-best-practices-dell-emc-4024-b
Sizing an SC Series array for performance requirements - pag.9)

NEW QUESTION 15
How are vVol datastores mounted in Dell EMC PowerStore storage during the creation of vVol datastores in the vSphere environment shared by ESXi hosts?

• A. Volume Groups
• B. Storage containers
• C. Storage Groups
• D. VMFS datastores

Answer: B

Explanation:
A storage container is used to present vVol storage from a PowerStore cluster to vSphere. vSphere mounts the storage container as a vVol datastore and makes it available for VM storage. When a PowerStore cluster is used to provide VM storage, user VMs should be provisioned on the vVol datastores. The default storage container is mounted automatically on the nodes of the cluster.

NEW QUESTION 16
In vCenter, what is the correct order of steps to create a VM in a storage container provisioned on a Dell EMC PowerStore system?

• A. Yes
• B. Not Mastered

Answer: A

NEW QUESTION 17
You are upgrading a Dell EMC Unity array to a Dell EMC PowerStore 1000 T array. The customer asks what they need to do so they can map PowerStore snapshots from the new PowerStore array to a host.
What should be your response?

• A. Create a volume group of the snapshot.
• B. Create a read/write snapshot of the snapshot
• C. Create a copy of the snapshot
• D. Create a thin clone of the snapshot

Answer: D

Explanation:
"Volume and Volume Group Snapshots: Snapshots cannot be mapped to a host. To view the contents of a snapshot, you must first clone the snapshot then map the clone to a host."

NEW QUESTION 18
You are designing a Dell EMC PowerStore solution with a customer. They ask if they can populate Slots 0 to 10 with NVMe SSD drives.
What should be your response?

• A. Any drive type can be populated in the remaining slots
• B. NVMe SSDs must be populated in the remaining empty slots
• C. NVMe SCM drives are required in Slots 0 through 10
• D. NVMe SCM drives must be populated in the remaining empty slots

Answer: B

NEW QUESTION 19
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