Free E20-555 Exam Braindumps

Which Isilon OneFS protection level allows you to withstand two drive failures but no more than one complete node failure?

1. A. N+1
2. B. N+2
3. C. N+2:1
4. D. N+3:1

Correct Answer: C

Refer to the exhibit.

Your customer has three different clusters. File systems on two of the clusters are at 90% full, and the largest cluster is 10% full. Active data resides on the largest cluster. The customer has five different node types totaling 2PB and 54 nodes. Nodes from left to right are as shown:
(1). X200
(2). 12000X
(3). 36000X
(4). NL108
(5). 108NL
They have a Smartpool license and believe that tiering data would help free up needed space.
After talking with the customer and explaining the use of SmartPools, how would you recommend optimizing utilization across all of the nodes that the customer owns?

1. A. Attach all nodes to a common Infiniband switch.
2. B. Go to GUI and put alike nodes in the same pool
3. C. Then name them.
4. D. Borrow nodes to reconfigure the cluster and migrate the data to new cluster.
5. E. Explain to the customer that this will result in data loss.

Correct Answer: A

-- 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.
-- Exhibit -
Which configuration changes would you recommend for the Engineering users?

1. A. Direct all clients to use the Manufacturing DNS server and connect NFS mounts to the FQDN of the Isilon cluster.
2. B. Mount an NFS share to a node on the Isilon cluster, being careful to equally distribute the load across nodes.
3. C. Utilize SMB2.1 protocol and mount to the Isilon cluster using the Name Server (NS) record IP.
4. D. Create an FQDN for the Isilon cluster in the LMHOSTS file for each engineering system.

Correct Answer: A

-- Exhibit -
We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.
-- Exhibit -
Before making any changes, the customer would like a graphical presentation of their existing array performance to present to management.
What is the best tool to gather this information?

1. A. InsightIQ
2. B. isi_netlogger
3. C. tcpdump
4. D. netstat

Correct Answer: A

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’?

1. A. Add an SSD node tier for metadata to account for at least 2% of RAW capacity
2. B. Use an A100 node for added CPU performance to help with ‘tree-deletes.’
3. C. Add 20% more nodes to the cluster to help with degraded performance.
4. D. Add an SSD tier for metadata, ensuring all nodes have SSDs.

Correct Answer: A