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EMC D-PSC-DS-23 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: PowerScale Architecture and Concepts | - File system layout and data flow - OneFS architecture overview - Cluster components and node types |
| Topic 2: Monitoring, Troubleshooting, and Optimization | - Cluster health diagnostics - Performance monitoring tools - Common design troubleshooting scenarios |
| Topic 3: Cluster Design and Planning | - Scalability considerations - Workload assessment and performance design - Sizing and capacity planning |
| Topic 4: Security and Access Control | - Role-based access control concepts - Authentication and authorization methods - Data encryption and security design |
| Topic 5: Data Protection and Availability | - Snapshot and snapshotIQ concepts - Failure domains and resilience design - Erasure coding and replication strategies |
| Topic 6: Storage Management and Data Services | - Protocol support (NFS, SMB, HDFS) - SmartPools tiering and data placement - Data lifecycle management |
| Topic 7: Networking Design for PowerScale | - Client access and load balancing - Network topology design - SmartConnect configuration concepts |
EMC Dell PowerScale Design 2023 Sample Questions:
A healthcare services provider is implementing an X-Series cluster. Currently they have approximately 200 customers and they are growing at 30% per year. They have 200 TB of storage utilized.
Health Insurance Portability and Accountability Act (HIPAA) regulations require they keep all patient data for seven (7) years. They would like to keep all genomic sequencing data stored with N+3 protection, not to exceed 75% utilization.
What is the minimum initial configuration you would recommend?
- A. 13 X200 nodes; 3 TB drives
- B. 7 X400 nodes; 1 TB drives
- C. 13 X400 nodes; 1 TB drives
- D. 6 X400 nodes; 4 TB drives
Correct Answer: A 🗳️
Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 65% utilized for their video surveillance operations.
They wish to achieve the following:
Upgrade from 1280 x 720 resolution, with a 15 days retention policy, to 2048 x 1536 resolution with a 30 days retention policy.
What is the minimum number of nodes of the same type will you need to add in order to meet the required changes and not exceed 70% raw capacity?
- A. 6 nodes
- B. 18 nodes
- C. 14 nodes
- D. 10 nodes
Correct Answer: A 🗳️
A customer has installed an Isilon Gen 6 cluster as a Proof of Concept. Before making a purchase decision, they would like to compare the performance of the Isilon to competitive offerings.
Which tool can be used to provide data analysis and benchmarking through existing workflows?
- A. lometer
- B. Wireshark
- C. IOZone
- D. ClarityNow!
Correct Answer: C 🗳️
Which operational consideration is used in the Isilon Sizing Tool to determine the recommended data protection?
- A. MTBF
- B. MTTR
- C. MTTRC
- D. MTTDL
Correct Answer: D 🗳️
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
The CIO approaches you with a new requirement. They would like to reuse the tape library that was previously used for archiving to now be used to back up some of their data.
What do you recommend to the Director of IT as the best architecture to achieve this goal?
- A. Use a third party backup software and have the Isilon cluster convert the data to LTFS so it can be stored to the tape library.
- B. Connect the Tape Library via Fibre Channel to the Isilon cluster and use a third party backup software to initiate an NDMP backup to an accelerator.
- C. Implement a Backup Accelerator and use the internal backup software within the Isilon cluster to move data to the tape library.
- D. Use a Backup Accelerator with SynclQ to push the data to the tape library via the Fibre Channel ports on the accelerator.
Correct Answer: B 🗳️
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