Last Updated: Jul 16, 2026
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| Duration | 120 mins |
| Number of Questions | 60 |
| 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 |
| Schedule Exam | Pearson VUE |
| Exam Name | Dell EMC Certified Specialist - Technology Architect - Isilon Solutions (DECS-TA) |
| Passing Score | 60% |
| Exam Code | E20-555 |
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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.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Monitoring, Tools & Advanced Features | 20% | - SmartPools and tiered storage strategies - InsightIQ and isi statistics monitoring - RBAC, ZRBAC and job management - Workload analysis tools: iostat, iperf, tcpdump |
| Topic 2: Solution Design Process & Sizing | 20% | - Capacity planning and sizing methodologies - Performance and latency considerations - Requirements gathering and workload characterization - File server consolidation and migration planning |
| Topic 3: Isilon Infrastructure | 20% | - Isilon cluster architecture and components - OneFS operating system and file system concepts - Data protection, erasure coding and disk utilization - Node types, pools, compatibility and scalability |
| Topic 4: Data Management & Protection | 20% | - SnapshotIQ configuration and use cases - SmartQuotas, SmartDedupe, and compression - Backup, archive and antivirus integration - SyncIQ replication and disaster recovery |
| Topic 5: Networking & Client Access | 20% | - Access Zones and multi-tenancy - Supported protocols: NFS, SMB, FTP, HTTP, HDFS - Network design, VLANs, routing and SmartConnect - Authentication and authorization mechanisms |
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