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EMC DES-1415 Exam Syllabus Topics:

EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:

1. Following Dell best practices, at what capacity consumption should an organization begin the process of ordering more nodes to add to a cluster?
Response:

A) 85%
B) 75%
C) 70%
D) 80%

2.
As part of a proof of concept, you are investigating disk performance statistics using the "isi statistics" output. After reviewing the "TimeAVG" column shown in the graphic, which information should be provided to the customer?
Response:

A) I/O is waiting in the disk scheduler
B) Light-to-moderate disk contention exists
C) Protocol layer adds minimal latency
D) Disks are heavily used

3. A customer wants to add Unix users to their cluster, and requires that NFS access be faulttolerant. What would you recommend?
Response:

A) Use NFS v4 and dynamic IP addressing with SmartConnect Advanced
B) Use NFS v4 and dynamic IP addressing with SmartConnect Basic
C) Use NFS v3 and dynamic IP addressing with SmartConnect Advanced
D) Use NFS v3 and dynamic IP addressing with SmartConnect Basic

4. A customer is inquiring about expanding their primary cluster consisting of six S-Series nodes in order to improve performance. They have a second cluster with 11 X-Series nodes. Both clusters leverage 1GbE, but the customer recently installed a 10GbE network that can be utilized.
They also have multiple Fibre Channel SAN arrays in their environment. They have a variety of workloads on each cluster and are in the process of determining which workloads belong on which cluster.
They have discovered that one of the workloads- a SQL database that resides on the X-Series node cluster - is experiencing timeouts due to latency. The database vendor has suggested limiting latency to 5ms or less to eliminate these timeouts.
How do you advise the customer?
Response:

A) Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.
B) Suggest the customer consider leveraging SSDs in the new nodes they purchase and GNA to boost the performance of each cluster.
C) Merge the S-Series nodes and X-Series nodes into one cluster, upgrade the 1GbE to 10GbE, and leverage SmartPools to allow for the cluster to determine where data should reside.
D) Recommend they increase the amount of DRAM in the cluster or consider an Accelerator node in order to increase the amount of cache in their cluster.

5. What is the behavior of the Isilon time and date settings and what is the best practice?
Response:

A) SMB time sync takes precedence over the NTP service SMB time is not enabled by default on the cluster Best Practice: do not use NTP time, use SMB for cluster and Domain Controller
B) NTP service takes precedence over SMB time sync SMB time is enabled by default on the cluster Best Practice: do not use SMB time, use NTP for cluster and Domain Controller
C) NTP service takes precedence over SMB time sync SMB time is enabled by default on the cluster Best Practice: do not use NTP time, use SMB for cluster and Domain Controller
D) SMB time sync takes precedence over the NTP service SMB time is enabled by default on the cluster Best Practice: do not use SMB time, use NTP for cluster and Domain Controller

Solutions: