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Updated: Sep 07, 2026
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Isilon E20-553 Exam Overview:
| Certification Vendor: | Dell EMC (Dell Technologies) |
|---|---|
| Exam Name: | Isilon Infrastructure Specialist Exam for Technology Architects |
| Exam Number: | E20-553 |
| Related Certifications: | Dell EMC Proven Professional Data Scientist & Storage Certifications Isilon Implementation Engineer |
| Exam Price: | USD 200 |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Real Exam Qty: | 60 |
| Certificate Validity Period: | Retired (historical exam; no longer actively offered under current Dell certification tracks) |
| Available Languages: | English |
| Passing Score: | 63% |
| Exam Duration: | 90 minutes |
| Recommended Training: | Dell EMC Isilon Administration Training OneFS Storage Management Courses |
| Exam Registration: | Pearson VUE Exam Registration Dell Technologies Proven Professional Certification Portal |
| Sample Questions: | Isilon E20-553 Sample Questions |
| Exam Way: | Proctored exam delivered via Pearson VUE (online or test center) |
| Pre Condition: | Recommended knowledge of enterprise storage systems, networking fundamentals, and Dell EMC Isilon/OneFS concepts. Prior experience with storage administration is highly beneficial. |
| Official Syllabus URL: | https://education.dell.com |
Isilon E20-553 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Isilon Cluster Architecture (OneFS) | - OneFS distributed file system fundamentals - Cluster nodes, roles, and architecture components - Data layout and protection mechanisms (erasure coding, mirroring) |
| Topic 2: Data Access and Protocols | - NFS and SMB configuration and optimization - Authentication and identity management integration - Multiprotocol environments |
| Topic 3: Data Protection and Availability | - Snapshots and snapshot schedules - Backup integration (NDMP) - SyncIQ replication and disaster recovery |
| Topic 4: Cluster Configuration and Administration | - Initial cluster setup and configuration - SmartPools policy management - Storage provisioning and management |
| Topic 5: Performance and Scalability | - Cluster scaling strategies - Performance monitoring and tuning - SmartConnect load balancing |
| Topic 6: Troubleshooting and Maintenance | - System monitoring and alerts - Log analysis and diagnostics - Common cluster issues and resolution |
Isilon Infrastructure Specialist Exam for Technology Architects Sample Questions:
Which type of data is stored in an Isilon node's Endurant Cache?
- A. Volume
- B. Write
- C. Read
- D. Protection
A customer is purchasing a 5-node Isilon X400 cluster for an HPC application running on Linux. The customer currently has 10 HPC nodes and will persistent mount the Isilon cluster through NFSv3. Which recommended configuration addresses the customer's requirements for high availability and throughput?
- A. SmartConnect Advanced with Network Throughput connection balancing and dynamic addressing
- B. SmartConnect Advanced with Round Robin connection balancing and static addressing
- C. SmartConnect Basic with Round Robin connection balancing and dynamic addressing
- D. SmartConnect Advanced with Round Robin connection balancing and dynamic addressing
A customer created one month of snapshots consisting of one snapshot every 8 hours for 30 days on an Isilon cluster using SnapshotIQ. The customer is now deleting the snapshots randomly and is experiencing overhead to the cluster. How can the customer remove the snapshots and avoid the overhead caused by the process?
- A. Snapshots cannot be deleted
- B. Delete the snapshots in order
- C. Remove the directory
- D. Move the snapshot data to a different tier with SmartPools
Which technology is used by Isilon OneFS to re-write data when a disk read fails?
- A. Isilon Data Integrity
- B. NVRAM
- C. Dynamic Sector Repair
- D. CRC
When using an N+2:1 protection policy on a 5-node Isilon cluster, how much capacity will be used to store a 320 KiB file?
- A. 576 KiB
- B. 320 KiB
- C. 640 KiB
- D. 448 KiB
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