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EMC Dell PowerScale Design 2023 Sample Questions:

1. 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?

A) 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.
B) Suggest the customer consider leveraging SSDs in the new nodes they purchase and GNA to boost the performance of each cluster.
C) Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.
D) 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.

2. There is a need to carry out a tech refresh of a PowerScale 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?

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

3. What form of journaling redundancy is provided by a PowerScale Gen6 cluster?

A) Each node maintains a copy of the peer journal.
The local journal is saved on nonvolatile storage.
B) Each node maintains a copy of the peer journal.
The local journal is saved on battery backed-up storage.
C) In the event of a node failure, the peer journal is written to nonvolatile storage on the paired node.
D) In the event of a node failure, the peer journal is written to disk on the paired node.

4. One of your customers is interested in an Isilon Gen 6 solution. They have provided basic solution requirements, but their security policies do not allow them to perform detailed data collection for infrastructure and workload analysis.
Which tool should you use to design the new Isilon solution?

A) Iometer
B) Sizing Tool
C) ClarityNow!
D) Live Optics

5. A customer is looking for a NAS solution to support their read-intensive application.
This solution must meet the following requirements:
- 1000 users
- Aggregate bandwidth of 5 GB/s
- 500 TB of user data
- Typical latency of 5 ms.
The files are distributed evenly across 10 directories.
Which cluster configuration would best meet these requirements?

A) Twenty-five X200 (30 TB) nodes with 800 GB SSD
B) Eight X400 (96 TB) nodes with 1.6 TB SSD
C) Eight NL400 (96 TB) nodes with 1.6 TB SSD
D) Seven X400 (108 TB) nodes with no SSD

Solutions: