Isilon Infrastructure Specialist Exam for Technology Architects : E20-553

  • Exam Code: E20-553
  • Exam Name: Isilon Infrastructure Specialist Exam for Technology Architects
  • Updated: Sep 14, 2026
  • Q & A: 82 Questions and Answers

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Isilon E20-553 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Performance, Scalability, and Sizing18%- Caching and latency optimization
- Performance monitoring and tuning
- Cluster sizing and expansion guidelines
- SmartPools and storage tiering
Topic 2: Management, Identity, and Protocols27%- Supported access protocols (NFS, SMB, HDFS, HTTP)
- Cluster management tools
- Access Zones and authentication
- Role-based administration and RBAC
Topic 3: Data Protection and Efficiency25%- SnapshotIQ and SyncIQ replication
- Node failure and SmartFail process
- FlexProtect and data protection levels
- Deduplication, compression, and SmartDedupe
Topic 4: Isilon Infrastructure and Architecture20%- OneFS operating system fundamentals
- Isilon cluster hardware and node types
- Cluster networking and SmartConnect
- Node pools, tiers, and compatibility
Topic 5: Advanced Features and Solutions10%- Upgrade and migration considerations
- Isilon use cases and workloads
- CloudPools and hybrid integration

Isilon Infrastructure Specialist Exam for Technology Architects Sample Questions:

Question #1

An Isilon customer has a replication policy setup between a primary cluster and a secondary cluster. After the initial synchronization of the clusters, the primary cluster starts to exhibit issues so the customer initiates a failover operation between the two clusters.
During the failover, the primary cluster becomes fully operational again. The customer would like to stop the failover operation between the two clusters.
What is the best way to stop the failover operation and continue using the primary cluster?

  • A. Nothing; this is an automatic process
  • B. Initiate a failover revert on the primary cluster
  • C. Delete the primary clusters' snapshot of this data
  • D. Initiate a failover revert on the secondary cluster
Answer: D
Question #2

A customer is interested in deploying InsightIQ into their Isilon environment. How is InsightIQ installed?

  • A. Deployed on a Windows 64-bit server
  • B. Installed on a FreeBSD server
  • C. Installed on an Isilon cluster
  • D. Deployed as a virtual appliance
Answer: D
Question #3

If a client is mounted to the sixth node in a 20-node Isilon cluster, how much memory cache can that client leverage assuming each node has 8 GB of memory cache?

  • A. 160 GB
  • B. 16 GB
  • C. 120 GB
  • D. 40 GB
Answer: A
Question #4

For concurrent I/O, how are Endurant Cache and SmartCache different?

  • A. SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file
  • B. Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM
  • C. Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache
  • D. SmartCache immediately commits the write to NVRAM on the local node and one peer node
Answer: B
Question #5

An Isilon customer expressed an interest in more effectively managing their storage. Specifically, they would like to plan for future growth. Which tool would allow the customer to forecast capacity requirements?

  • A. InsightIQ
  • B. Isilon SNMP MIB
  • C. SyncIQ
  • D. SmartPools
Answer: A

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