Free E20-555 Exam Braindumps

A potential customer requires 4 PB of usable capacity to store media files. The workloads are a combination of streaming video delivery and long term archive of video assets.
There is very little space available in the customer's datacenter, so physical density is very important. The customer is concerned about performance impact and potential data loss when using 3 TB or larger drives.
What Isilon capabilities can address the customer's concerns?

1. A. Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID rebuilds.N+3 and N+4 Protection Levels exceed traditional RAID6 availability.Data redistribution runs faster with more nodes in the cluster.
2. B. N+3 and N+4 Protection Levels exceed traditional RAID6 availability.Proactive hot sparing eliminates most drive rebuilds.Endurant Cache reduces the overhead for write operations.
3. C. Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID rebuilds.Data recovery is consistent, taking the same amount of time regardless of cluster size.Isilon 'short strokes' 4TB drives to reduce rebuild time.
4. D. Isilon nodes have more drives per rack unit so fewer shelves are required.Proactive hot sparing eliminates most drive rebuilds.N+3 and N+4 Protection Levels exceed traditional RAID6 availability.

Correct Answer: A

-- Exhibit -
A European Sports TV network is considering Isilon for their Media Edit Storage for their editing workloads. They are also considering Isilon for near-line media archiving.
The network receives XDCAM HD footage which is loaded onto their existing Transcoding Storage platform. New footage that needs to be edited will be transferred from their Transcoding Storage platform to the proposed Media Edit Storage platform at the rate of ten simultaneous XDCAM HD files via FTP. Edited files will be transferred back to the Transcoding Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
The network currently has 15 Final Cut Pro edit stations, 15 Avid edit stations. Proxy software will be used to allow Isilon to act as the storage for the Final Cut Pro and Avid media. Three of those edit stations will be performing content compositing as needed.
The network expects 70 hours of new content per week, and 50 hours of edited content per week. They intend to keep the new and edited content on the proposed Media Edit Storage as a performance tier for 30 days. They would like to retain all new and edited footage proposed Media Edit Storage as a near-line tier for two years.
In addition to the current workloads, the network expects to implement a new Media Asset Management (MAM) solution and has requested the Isilon cluster be capable of supporting 120 MBps read and 120 MBps write to support the MAM requirements.
-- Exhibit -
Refer to the exhibit.

Based on the number of edit stations, and their intended use, what bandwidth requirements should be considered while sizing?

1. A. Write Performance:70 MBps FTP sequential21 MBps NFS and/or SMB sequential120 MBps NFS and/or SMB randomRead Performance:70 MBps FTP sequential210 MBps NFS and/or SMB sequential120 MBps NFS and/or SMB random
2. B. Write Performance:550 MBps FTP sequential275 MBps NFS and/or SMB sequential120 MBps NFS and/or SMB randomRead Performance:550 MBps FTP sequential1.6 GBps NFS and/or SMB sequential120 MBps NFS and/or SMB random
3. C. Write Performance:21 MBps FTP sequential70 MBps NFS and/or SMB sequential120 MBps NFSand/or SMB randomRead Performance:210 MBps FTP sequential70 MBps NFS and/or SMB sequential120 MBps NFS and/or SMB random
4. D. Write Performance:70 MBps FTP sequential210 MBps NFS and/or SMB sequential120 MBps NFS and/or SMB randomRead Performance:70 MBps FTP sequential21 MBps NFS and/or SMB sequential120 MBps NFS and/or SMB random

Correct Answer: A

A company currently has multiple fileservers to provide home directories for its employees. Each department has a separate fileserver. Most corporate users are on Windows clients and utilize Active Directory, except for the Engineering department, which uses Linux and NIS for authentication. The company is looking for a solution with minimal administrative overhead and a single namespace for the home directories.
What is the recommended solution that will meet this company's requirements?

1. A. Configure a single Isilon cluster and utilize Access Zones for authentication to Active Directory and NIS.
2. B. Configure two separate clusters, one for Windows clients and the other for Linux.
3. C. Utilize SmartPools to create two different FilePools, and separate Windows users from Linux users.
4. D. Configure a single cluster, and migrate Linux users to Windows.

Correct Answer: A

You are involved with a Proof of Concept where the performance is not what you expect. What can you use to collect process stack information and a listing of process waiting on I/O?

1. A. netstat
2. B. tcpdump
3. C. isi statistics
4. D. isi_get_itrace

Correct Answer: C

What is the minimum size and the maximum size, respectively, of a single pre-Gen 6 node pool?

1. A. 3 and 144
2. B. 3 and 288
3. C. 4 and 144
4. D. 4 and 288

Correct Answer: A