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EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:

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

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

2. A customer is interested in configuring a snapshot on /ifs/clustername/ because this directory has all of their data and they can restore data to this path whenever needed. What should you tell the customer?
Response:

A) Take a snapshot of /ifs to reduce management overhead
B) Schedule snapshots for critical data paths and set retention period based on business requirements
C) Configuring snapshots will occupy additional space equal to the data size on the cluster
D) Use snapshots created by SyncIQ policies to restore the data

3. A telecommunications company has a substantial amount of dat
a. This data is being created by network elements within their environment. The company wants to change the way the network elements Call Detail Records (CDR) are stored and analyzed. The existing infrastructure consolidates all of the CDRs into a table structure, and then ingests them into a large database.
Once ingested, a query engine accesses the database and performs analysis on these files. The system is functional; however, since the amount of CDRs generated will increase exponentially over the next year, the company is open to alternatives for storing and analyzing these records.
In evaluating alternatives, the key requirements are to reduce cost, the amount of storage, and the amount of time to analyze the data. The customer would like to use Hadoop to analyze the CDRs. After you have conducted an assessment of the workflow, you have recommended an Isilon Cluster to work within the Hadoop environment.
Considering the customer's requirements, which is the best node type for the Isilon cluster?
Response:

A) NL400 with 48 GB RAM and no SSDs per node.
B) X200 with 24 GB of RAM and 1.2 TB of SSD per node.
C) X400 with 96 GB of RAM and no SSDs per node.
D) X400 with 24 GB RAM and 1.6 TB of SSD per node.

4. You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system. In general, how should the solution be presented to the customer?
Response:

A) VNX for image cache and image archive
B) Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive
C) VNX for image cache; Isilon NL-Series nodes for image archive
D) Isilon NL-Series nodes for image cache and image archive

5. There is a need to carry out a tech refresh of an Isilon cluster. Old nodes must be removed because they will soon be at end of service life. What methodology is least disruptive and will retain the file system structure, configuration, data, and DNS information?
Response:

A) Add the new nodes to the cluster and use SmartPools to move the data to the new nodes
B) Install the new nodes into the cluster and migrate using a host-based utility
C) Install new nodes into the cluster and use SyncIQ to replicate the data from the old to the new nodes
D) Install the new nodes as a new cluster and use SyncIQ to replicate the data to the new nodes

Solutions: