D-PSC-DS-01 Fragen & Antworten & D-PSC-DS-01 Studienführer & D-PSC-DS-01 Prüfungsvorbereitung

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EMC D-PSC-DS-01 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Protection & Availability	- Erasure coding / protection levels 1. Drive and node failure tolerance
Topic 2: Cluster Design & Sizing	- Node selection and performance tiers 1. Workload mapping and scaling principles 2. H-series, A-series, F-series node usage
Topic 3: Performance & Scalability	- Performance tuning 1. Metadata acceleration 2. Cache hierarchy (L1/L2/L3) - Cluster scaling behavior 1. Linear scale-out architecture benefits
Topic 4: Data Management & Storage Efficiency	- SmartPools and tiering 1. Lifecycle management strategies 2. Policy-based data movement - Snapshots and protection 1. SnapshotIQ behavior and overhead
Topic 5: PowerScale Architecture & Fundamentals	- OneFS architecture 1. Data protection and striping concepts 2. File system layout and distributed design

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D-PSC-DS-01 Prüfungsfrage & D-PSC-DS-01 Testking

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EMC Dell PowerScale Design v2 Exam D-PSC-DS-01 Prüfungsfragen mit Lösungen (Q302-Q307):

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

Antwort: D

303. Frage
Which factor most directly impacts workflow design when considering file size growth?

A. Change in I/O pattern from small to large files over time
B. Frequency of isi statistics queries
C. Number of access zones for authentication
D. Snapshot schedule frequency

Antwort: A

304. Frage
A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor's SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment. The company's Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
The customer provides the following environment summary from the engineering firm's recently departed IT staff:
- 20 TB of Home Directory data
- 100 TB of active CAD projects
- 400 TB of archived data stored on tape at an offsite warehouse
The CIO approaches you with a new requirement. They would like to reuse the tape library that was previously used for archiving to now be used to back up some of their data.
What do you recommend to the Director of IT as the best architecture to achieve this goal?

A. Use a third party backup software and have the Isilon cluster convert the data to LTFS so it can be stored to the tape library.
B. Implement a Backup Accelerator and use the internal backup software within the Isilon cluster to move data to the tape library.
C. Use a Backup Accelerator with SynclQ to push the data to the tape library via the Fibre Channel ports on the accelerator.
D. Connect the Tape Library via Fibre Channel to the Isilon cluster and use a third party backup software to initiate an NDMP backup to an accelerator.

Antwort: D

305. Frage
You are designing a cluster for workloads that have a low latency, heavy, random access pattern.
Which node type is designed for this type of workload?

A. F800
B. H5600
C. A2000
D. A200

Antwort: A

306. Frage
What should be evaluated first when determining hardware capacity for a PowerScale solution?

A. SyncIQ replication topology
B. Average file size and access patterns
C. Switch port availability
D. SnapshotIQ schedule configuration

Antwort: B

307. Frage
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