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Last Updated: Jul 16, 2026
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Details of Exam Topics
This Dell EMC evaluation focuses on five domains and each of them covers certain skills. The weightage of each topic also varies from area to area. Isilon Infrastructure, Isilon Management, Identity Management, and Advanced Applications, Solution Design Process, Sizing Considerations, and Workload Analysis Tools are the titles of exam domains assessed by E20-555. Some of the most talked-about tools and concepts under these objectives are explaining traits and utility of Isilon nodes, Access Zones, file pools & components, InsightIQ, node compatibilities, use cases of SnapshotIQ, SmartPools, use of RBAC and ZRBAC, Isilon networking, requirements regarding SyncIQ & SmartQuotas, and isi statistics just to detail a few. The use of key analysis tools like iostat, iperf, tcpdump, Wireshark, and NFSstat is also explained well in this test. Overall, every key aspect of Isilon and related technologies are covered in such an evaluation.
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Dell EMC E20-555 Exam Syllabus Topics:
| Topic | Details | Weights |
|---|---|---|
| Solution Design Process | -Describe the information requirements for designing an Isilon solution, including determining hardware and software capacity, file server consolidation, file size considerations, performance sizing impact, data types, and I/O characteristics | 7% |
| Isilon Management, Identity Management, and Advanced Applications | -Describe how to determine when to use SnapshotIQ when snapshots are not recommended -Describe data requirements regarding SmartPools, File Pools, and CloudPools -Describe data requirements regarding SyncIQ, SmartQuotas, SmartDedupe, Antivirus, and SmartLock -Describe the client access, client permissions and client protocol accesson the Isilon cluster -Describe the nature and use of job engines -Describe the nature and use of RBACand ZRBAC -Describe journaling, file striping, data protection, metadata, and caching -Describe replication and recovery | 47% |
| Workload Analysis Tools | -Describe the cluster monitoring with InsightIQ and isi statistics -Describe the nature and appropriate use of workflow analysis tools: iostat, iperf, tcpdump, Wireshark, NFSstat | 8% |
| Sizing Considerations | -Describe how data availability and protection are implemented and measured on an Isilon cluster. - Describe how disk space is utilized for small and large files and its effects on protection overhead. -Describe how I/O patterns and latency requirements impact workflows on the Isilon cluster -Describe the challenges and considerations for configuring backup and archive workflows | 18% |
| Isilon Infrastructure | -Describe the nature and use of Isilon nodes, components, node pools, and node compatibilities -Describe the nature and use of latency, sequential versus random access, and endurant cache -Describe the nature of Isilon networking, Access Zones, and use of SmartConnect | 20% |
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Dell EMC Isilon Solutions and Design Specialist Exam Certification Details:
| Exam Price | $230 (USD) |
| Sample Questions | Dell EMC Isilon Solutions and Design Specialist Sample Questions |
| Books / Training | Isilon Fundamentals 2019 -ES131STG01028 Isilon Solution Design: Platform Architecture -ES532STG01056 Isilon Solution Design: Data Protection -ES502STG01256 Isilon Solution Design: Networking -ES502STG01279 |
| Exam Code | E20-555 |
| Exam Name | Dell EMC Certified Specialist - Technology Architect - Isilon Solutions (DECS-TA) |
| Schedule Exam | Pearson VUE |
| Passing Score | 60% |
| Duration | 120 mins |
| Number of Questions | 60 |
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EMC E20-555 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Monitoring, Tools & Advanced Features | 20% | - SmartPools and tiered storage strategies - Workload analysis tools: iostat, iperf, tcpdump - RBAC, ZRBAC and job management - InsightIQ and isi statistics monitoring |
| Isilon Infrastructure | 20% | - OneFS operating system and file system concepts - Isilon cluster architecture and components - Node types, pools, compatibility and scalability - Data protection, erasure coding and disk utilization |
| Solution Design Process & Sizing | 20% | - Performance and latency considerations - Requirements gathering and workload characterization - Capacity planning and sizing methodologies - File server consolidation and migration planning |
| Data Management & Protection | 20% | - SnapshotIQ configuration and use cases - SyncIQ replication and disaster recovery - SmartQuotas, SmartDedupe, and compression - Backup, archive and antivirus integration |
| Networking & Client Access | 20% | - Access Zones and multi-tenancy - Supported protocols: NFS, SMB, FTP, HTTP, HDFS - Authentication and authorization mechanisms - Network design, VLANs, routing and SmartConnect |
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