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EMC DES-1415 Exam Syllabus Topics:

EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:

1. Your customer is a major metropolitan newspaper. Your previous discussion centered on their storage requirements, and you asked them some of the Top Ten questions. They responded:
"Well, it's not the prettiest or most high-tech solution...we use Secure FTP (SFTP) to upload the stories and images and put them in a workflow that formats them for printing in the newspaper."
"What really worries us is the fact that our Storage Array from your competitor is going out of maintenance in 120 days, and they are dropping support for Secure FTP. This isn't even considered in our D/R Plan. Do you have a better solution with Isilon?" Which top 10 questions led to this information?
Response:

A) What is your network infrastructure like?How many Storage Fabrics do you have?What is your Disaster Plan for the Newspaper?
B) What filesystems, SMB, NFS, or other are you using?What does your infrastructure look like?How do you manage your File Systems?
C) How much capacity are you looking for?What applications access this storage?What risks are there in your current infrastructure?
D) What does your infrastructure look like?What applications access this storage?What protocols and version number?

2. Consider the access permissions for a file stored on PowerScale. What attributes does a file have if it is described as having a Synthetic ACL?
Response:

A) When listed using ls -l command, a plus (+) is not displayed.POSIX mode bits are present.POSIX mode bits are used for access checks.
B) When listed using ls -l command, a plus (+) is not displayed.POSIX mode bits are present.POSIX ACLs are used for access checks.
C) When listed using ls -l command, a plus (+) is displayed.POSIX mode bits are not present.Advanced ACLs are used for access checks.
D) When listed using ls -l command, a plus (+) is displayed.POSIX mode bits are present.Advanced ACLs are used for access checks.

3. Your customer manages a print media environment, consisting of three Isilon clusters, which are out of support. The customer would like to have access to new software releases and feature sets. You have been asked to perform a full discovery of the customer's environment.
The customer's current Isilon clusters are as follows:
"Cust" (12 x 12000X) serves as upload media storage for different tenants.
"Working" (8 x 12000X + 6 x X200) serves as a working zone for extraction to RAW and printing media from it.
"Archive (16 x 72NL + Accelerator nodes) is used to store printed content for six months.
The customer operates in a Windows environment using SMB 2.0, two DNS servers per AD forest, three forest domains which are servicing three different environments. All servers are operating on a 1Gb network, three VLANs segregating the DEV/QA/PROD environments. Currently, there is no monitoring in place for performance measurement or optimization.
The requirements for this solution include:
- Better ROI and TCO
- Maintain same performance with possible improvements
- Renew HW/SW and get inclusive support
- Limit migrations
- Reduce space, power, cooling consumption
- Get new feature sets
- If migration required, use Parallel copy (multiple nodes, multiple threads multiple connections)
- Segregate tenant shares from other tenants
- Expand up to 1PB of total storage
What would you recommend be done to consolidate the three clusters into one?
Response:

A) - Expand the largest and most I/O intensive cluster using SmartFail- Consolidate the remaining two clusters using Multithreaded version of RoboCopy- Modify A-Record and propagate to all DNS servers to point to the new cluster
B) - Leave the clusters as is- Upgrade drive sizes to meet the customer requirements
C) - Expand the largest and most I/O intensive cluster using SmartFail- Consolidate the remaining two clusters using SyncIQ
D) - Build a new cluster for consolidation- Use SnapshotlQ to migrate the existing data onto the new consolidated cluster- Spoof DNS to point to the new cluster

4. How many Z9264 switches are required for a A3000 cluster consisting of 160 nodes using a 25 GbE for a complete back-end network?
Response:

A) 3
B) 4
C) 8
D) 6

5. At a minimum, how many connected and available nodes are required to maintain quorum in a 25- node cluster?
Response:

A) 13
B) 10
C) 17
D) 12

Solutions: