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EMC D-PSC-DS-23 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Storage Efficiency and Performance Optimization | 22% | - Performance tuning and workload design - CloudPools integration - SmartPools, FilePools, and tiering |
| Data Protection and Security Design | 20% | - RBAC, authentication, and encryption - Data protection policies and replication - SnapshotIQ, SmartLock, and backup strategies |
| Integration and Advanced Design Considerations | 18% | - Monitoring, management, and sizing validation - Enterprise application integration - Multi-protocol access design |
| Requirements Analysis and Design Planning | 15% | - Performance, capacity, and availability planning - Scalability and future growth considerations - Business and technical requirement gathering |
| PowerScale Infrastructure and Architecture | 25% | - Network design, SmartConnect, and access zones - PowerScale hardware and OneFS architecture - Node selection and generation differences |
EMC Dell PowerScale Design 2023 Sample Questions:
1. A European Sports TV network is considering Isilon for their Media Edit Storage for their editing workloads. They are also considering Isilon for near-line media archiving.
The network receives XDCAM HD footage which is loaded onto their existing Transcoding Storage platform. New footage that needs to be edited will be transferred from their Transcoding Storage platform to the proposed Media Edit Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
Edited files will be transferred back to the Transcoding Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
The network currently has 15 Final Cut Pro edit stations, 15 Avid edit stations. Proxy software will be used to allow Isilon to act as the storage for the Final Cut Pro and Avid media. Three of those edit stations will be performing content compositing as needed.
The network expects 70 hours of new content per week, and 50 hours of edited content per week. They intend to keep the new and edited content on the proposed Media Edit Storage as a performance tier for
30 days. They would like to retain all new and edited footage proposed Media Edit Storage as a near-line tier for two years.
In addition to the current workloads, the network expects to implement a new Media Asset Management (MAM) solution and has requested the Isilon cluster be capable of supporting 120 MBps read and 120 MBps write to support the MAM requirements.

The customer wants to be able to put completed content into a non-editable folder. However, they want to give access to an administrator to delete content if required.
What do you recommend to the customer?
A) WORM using Compliance mode
B) SmartLock using Compliance mode
C) SyncIQ with read-only mode
D) SmartLock using Enterprise mode
2. A eight node F800 Isilon cluster running OneFS 8.2.1 has a dedicated subnet and IP pool for SMB data traffic. SmartConnect Advanced license is applied. The SMB IP pool consists of LACP aggregated
10GigE interfaces from all the nodes.
What is the maximum number of SmartConnect Service IPs recommended for the SMB subnet?
A) 8
B) 1
C) 6
D) 4
3. Refer to the exhibit.
Your customer has three different clusters. File systems on two of the clusters are at 90% full, and the largest cluster is 10% full. Active data resides on the largest cluster. The customer has five different node types totaling 2PB and 54 nodes.
Nodes from left to right are as shown:
1. X200
2. 12000X
3. 36000X
4. NL108
5. 108NL
They have a Smartpool license and believe that tiering data would help free up needed space.
After talking with the customer and explaining the use of SmartPools, how would you recommend optimizing utilization across all of the nodes that the customer owns?
A) Go to GUI and put alike nodes in the same pools. Then name them.
B) Explain to the customer that this will result in data loss.
C) Borrow nodes to reconfigure the cluster and migrate the data to new cluster.
D) Attach all nodes to a common Infiniband switch.
4. Which OneFS feature enables you to host multiple tenants from mutually untrusting AD authentication environments from the same DNS namespace?
A) Access Zones
B) SmartQuotas
C) Groupnets
D) SmartConnect
5. A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is
60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor's SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment. The company's Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
The customer provides the following environment summary from the engineering firm's recently departed IT staff:
- 20 TB of Home Directory data
- 100 TB of active CAD projects
- 400 TB of archived data stored on tape at an offsite warehouse
What steps would you recommend to the IT Director to allow for collaboration between the engineering company and the manufacturing company?
A) Upload a collaboration user csv file into the cluster with usernames and passwords for the collaboration directory.
B) Create a new pool for use by the collaboration users.
Set up Access Zones on the Isilon cluster using AD and NIS authentication.
C) Repoint the engineering users to the Active Directory controller
Add the users to the appropriate Active Directory security group.
D) Set up Access Zones on the Isilon cluster using Active Directory (AD) and NIS authentication.
Create directories and apply user group permissions from AD and NIS for each collaboration team.
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: D |






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