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EMC E20-880 Exam Overview:
| Certification Vendor: | Dell EMC |
|---|---|
| Exam Name: | VNX Solutions Expert Exam for Technology Architects |
| Exam Number: | E20-880 |
| Exam Price: | $200 USD |
| Exam Format: | Multiple Choice, Drag and Drop, Scenario-based |
| Real Exam Qty: | 60-70 |
| Related Certifications: | EMC Proven Professional Technology Architect |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Passing Score: | 63% |
| Certificate Validity Period: | 2 years |
| Recommended Training: | Storage Performance Fundamentals VNX Unified Storage Performance Workshop |
| Exam Registration: | Pearson VUE Registration Dell EMC Education |
| Sample Questions: |  |
| Exam Way: | Onsite at Pearson VUE testing centers or online proctored exam |
| Pre Condition: | No formal prerequisites; recommended: 2+ years hands-on experience with VNX architecture, storage performance, and enterprise storage solutions |
| Official Syllabus URL: | https://education.emc.com/_content/_common/docs/exam_descriptions/e20-880_TA_VNX_Solutions_Expert_Exam.pdf |
EMC E20-880 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Storage Sizing for VDI Performance | 10% | - I/O risk areas in VDI deployments - Desktop count calculation and storage sizing methodology - Storage allocation types for VDI environments |
| VNX Unified Storage Performance | 68% | - Compression and deduplication impact - Block storage performance optimization - Host and network infrastructure influence - Local replication performance - Disk types and RAID configuration impact - Workload analysis and performance metrics - Remote replication performance - FAST Cache and FAST VP performance effects - File system performance considerations |
| Storage Performance Concepts and Tools | 22% | - Benchmarking and analysis tools - Performance measurement metrics and definitions |
EMC VNX Solutions Expert Exam for Technology Architects Details Every Buyer Should Read
- VNX Unified Storage Performance (68%)
- Storage Performance Concepts and Tools (22%)
- Storage Sizing for VDI Performance (10%)
EMC VNX Solutions Expert Exam for Technology Architects Sample Questions:
A Storage Administrator with a VNX Unified solution is using the CLI to monitor daily storage performance. They must type long commands to examine the statistical types and names to get the desired results. You have been asked to make statistical groups to accelerate and ease the demanded monitoring tasks.
Which command must be used to accomplish this job?
- A. naviseccli
- B. server_stats
- C. Collect statistics from log files
- D. nas_stats
Correct Answer: D 🗳️
Your customer has a 2,000 GiB traditional LUN containing a database of customer information. Data belonging to active customers is frequently accessed, but the majority of the data is static and seldom used. Your customer wants to implement block compression on the LUN.
What should your customer be made aware of?
- A. Database logs are incompatible with block compression.
- B. The LUN will be migrated to a thick LUN.
- C. Database tablespaces are incompatible with block compression.
- D. The LUN will be migrated to a thin LUN.
Correct Answer: D 🗳️
A VNX block-only customer is requesting a performance evaluation of their array. The storage administrator asks you what files you will need to perform the assessment. The customer does not have Analyzer licensed. How do you respond?
- A. Request the .nar files and SP collects
- B. Request the .naz files and SP collects
- C. Request the CCC output from the collect_config script
- D. Request the .nar files and server_stats output
Correct Answer: B 🗳️
A customer is using a virtualized environment with a large number of NFS datastores presented from a VNX system. They are experiencing more than expected network traffic on their datastore networks.
What recommendation would you make to your customer?
- A. Make sure that the NFS and VMKernel traffic is segmented onto different virtual switches.
- B. Enable NFS write cache for all NFS datastores.
- C. Adjust NFS.ReadBufferSize and NFS.SendBufferSize to 32.
- D. Ensure that all VMware file systems are thin provisioned to improve NFS write I/O.
Correct Answer: A 🗳️
A customer has deployed a legacy application on their VNX storage system that is configured with NL-SAS drives. They are considering adding an application to this array. They have reviewed the analyzer file and told you that the NL-SAS disk queue length is 8.
What advice would you give them?
- A. There is growth capacity for their environment
- B. Modify the SCSI command set to optimize the queue utilization
- C. Consider upgrading their disk technology
- D. No immediate changes are necessary
Correct Answer: C 🗳️
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