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Last Updated: Aug 26, 2026
No. of Questions: 345 Questions & Answers with Testing Engine
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| Number of Questions | 60 |
| Exam Code | E20-555 |
| Passing Score | 60% |
| Books / Training | Isilon Fundamentals 2019 -ES131STG01028 Isilon Solution Design: Platform Architecture -ES532STG01056 Isilon Solution Design: Data Protection -ES502STG01256 Isilon Solution Design: Networking -ES502STG01279 |
| Exam Price | $230 (USD) |
| Exam Name | Dell EMC Certified Specialist - Technology Architect - Isilon Solutions (DECS-TA) |
| Sample Questions | Dell EMC Isilon Solutions and Design Specialist Sample Questions |
| Duration | 120 mins |
| Schedule Exam | Pearson VUE |
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Management & Protection | 20% | - SyncIQ replication and disaster recovery - SmartQuotas, SmartDedupe, and compression - Backup, archive and antivirus integration - SnapshotIQ configuration and use cases |
| Topic 2: Monitoring, Tools & Advanced Features | 20% | - RBAC, ZRBAC and job management - Workload analysis tools: iostat, iperf, tcpdump - InsightIQ and isi statistics monitoring - SmartPools and tiered storage strategies |
| Topic 3: Networking & Client Access | 20% | - Network design, VLANs, routing and SmartConnect - Access Zones and multi-tenancy - Supported protocols: NFS, SMB, FTP, HTTP, HDFS - Authentication and authorization mechanisms |
| Topic 4: Isilon Infrastructure | 20% | - Data protection, erasure coding and disk utilization - Node types, pools, compatibility and scalability - OneFS operating system and file system concepts - Isilon cluster architecture and components |
| Topic 5: Solution Design Process & Sizing | 20% | - File server consolidation and migration planning - Performance and latency considerations - Capacity planning and sizing methodologies - Requirements gathering and workload characterization |
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