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EMC D-PSC-DS-23 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| PowerScale Architecture and Concepts | - Cluster components and node types - File system layout and data flow - OneFS architecture overview |
| Security and Access Control | - Data encryption and security design - Role-based access control concepts - Authentication and authorization methods |
| Storage Management and Data Services | - Data lifecycle management - Protocol support (NFS, SMB, HDFS) - SmartPools tiering and data placement |
| Monitoring, Troubleshooting, and Optimization | - Common design troubleshooting scenarios - Performance monitoring tools - Cluster health diagnostics |
| Data Protection and Availability | - Snapshot and snapshotIQ concepts - Failure domains and resilience design - Erasure coding and replication strategies |
| Networking Design for PowerScale | - Network topology design - Client access and load balancing - SmartConnect configuration concepts |
| Cluster Design and Planning | - Scalability considerations - Workload assessment and performance design - Sizing and capacity planning |
EMC Dell PowerScale Design 2023 Sample Questions:
1. What method does the MediaScan job leverage to locate and clear media-level errors?
A) MD5
B) CRC
C) FEC
D) SHA256
2. Your customer's initial use case was Home Directories. They implemented the cluster with four
1Gbps ports and LACP. They are planning to expand their cluster to support their core file services. They plan to upgrade their network infrastructure to 10 GbE to facilitate this.
What are two design impacts this change will have?
A) LACP and multiple links may be used to increase redundancy, but will not provide more overall performance to the system.
FCoE should be considered for the External Network Ports on the nodes.
B) Maximum performance is obtained by only using a single 10GbE interface per node.
Isilon can support up to 400MB/s per node
C) Maximum performance is obtained by only using a single 10GbE interface per node.
LACP and multiple links may be used to increase redundancy, but will not provide more overall performance to the system.
D) Dual 10GbE ports on each node will enable throughput of 20Gbps.
Only connect half of the nodes to the network.
3. How is data moved to the cloud using the CloudPools software module?
A) Data is transferred to cloud services based on CloudPools policy settings, leaving nothing on the Isilon cluster
B) Files are divided into 1 MB objects and stored in the cloud, leaving small stub files on the Isilon cluster
C) Data is transferred to cloud services and encoded based on the cloud configuration, leaving small stub files on the Isilon cluster
D) Files are divided into 1 MB objects and transferred over NDMP to the cloud service, leaving database entries on the Isilon cluster
4. By default, which method is used by Isilon OneFS for SSDs?
A) Metadata read/write acceleration
B) Avoid SSDs
C) Data on SSDs
D) Metadata read acceleration
5. A customer is interested in configuring a snapshot on /ifs/clustername/ because this directory has all of their data and they can restore data to this path whenever needed.
What should you tell the customer?
A) Schedule snapshots for critical data paths and set retention period based on business requirements
B) Take a snapshot of /ifs to reduce management overhead
C) Configuring snapshots will occupy additional space equal to the data size on the cluster
D) Use snapshots created by SyncIQ policies to restore the data
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: D | Question # 5 Answer: A |

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