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EMC E20-554 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Networking and Protocols | - Client access optimization - Network topology design - NFS, SMB, and multiprotocol environments |
| Data Protection and Availability | - Disaster recovery design - Protection levels and mirroring strategies - Snapshot and backup integration |
| Isilon Architecture and Components | - Node types and cluster design - Data layout and striping methodology - OneFS architecture fundamentals |
| System Management and Operations | - Monitoring and maintenance - Upgrades and lifecycle management - Security and access control |
| Cluster Design and Sizing | - Capacity planning and workload assessment - Scale-out design principles - Performance considerations |
EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:
A customer has grown 2 PB in the last year. The cluster performs well most times of the day, but occasionally during the day, the customer notices a decrease in performance. You have been told that 'tree-deletes' are taking too long and can only be run on weekends.
What would you recommend to speed up the 'tree-deletes'?
- A. Add 20% more nodes to the cluster to help with degraded performance.
- B. Add an SSD tier for metadata, ensuring all nodes have SSDs.
- C. Use an A100 node for added CPU performance to help with 'tree-deletes.'
- D. Add an SSD node tier for metadata to account for at least 2% of RAW capacity
Correct Answer: D 🗳️
While validating the value (VTV) with a large educational customer, they have decided they would like to add a Disaster Recovery (DR) site to their existing Isilon environment. The existing cluster contains six X-Series nodes. They plan to have all workflows replicated to the DR site and both clusters will have identical shares, exports, and user authentication. The customer would like to test DR failover every six months by running their production environment from the DR site.
What would you recommend for the DR solution?
- A. SyncIQ and NL-Series nodes at the DR site
- B. SyncIQ and identical cluster at the DR site
- C. Equal number of S-Series nodes at the primary site
- D. SmartConnect and NL-Series nodes at the primary site
Correct Answer: B 🗳️
Your customer has observed a degradation in response time while browsing for media files within the Production Media folder on the Isilon cluster. That directory now contains over five million files. It was confirmed that there are no network or edit station related causes.
What changes to the Isilon cluster will best accelerate the browsing performance?
- A. Upgrade network interfaces on the nodes to 10 Gbps
- B. Add an A-Series Performance Accelerator node
- C. Add Solid State Drives (SSDs) to the nodes
- D. Upgrade RAM on the nodes
Correct Answer: C 🗳️
-- Exhibit -
A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor's SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment. The company's Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
The customer provides the following environment summary from the engineering firm's recently departed IT staff:
20 TB of Home Directory data
100 TB of active CAD projects
400 TB of archived data stored on tape at an offsite warehouse
-- Exhibit -
Which configuration changes would you recommend for the Engineering users?
- A. Direct all clients to use the Manufacturing DNS server and connect NFS mounts to the FQDN of the Isilon cluster.
- B. Create an FQDN for the Isilon cluster in the LMHOSTS file for each engineering system.
- C. Utilize SMB2.1 protocol and mount to the Isilon cluster using the Name Server (NS) record IP.
- D. Mount an NFS share to a node on the Isilon cluster, being careful to equally distribute the load across nodes.
Correct Answer: A 🗳️
A media and entertainment company has asked for help in creating a new Video On Demand (VOD) storage system. The storage would be delivered to 5000 subscribers simultaneously. They would like to store 5000 hours of full length, High Definition (HD) movies.
What would be the best price-to-performance node(s) for this solution?
- A. X200 with no SSD and 48GB RAM
- B. X400 with 1.6TB SSD and 24GB RAM
- C. Mixed X400 48GB RAM and NL400 24GB
- D. X400 with no SSD and 96GB RAM
Correct Answer: D 🗳️
