VNX Solutions Expert Exam for Technology Architects (E20-880) Free Practice Test

Question 1

Exchange 2010 is being implemented on a pair of VNX storage arrays. There will be a production site and a DR site, each with two servers and one VNX storage array. EMC RecoverPoint will handle the remote replication between the sites.
Which is a valid architecture?

A. Implement both Exchange servers in a local DAG. Install EMC Replication Manager for remote replication.

B. Implement both Exchange servers in a cluster with shared disks. Use separate LUNs and RAID Groups for the Database, Log and Quorum. Install and enable Microsoft Cluster Enabler for RecoverPoint to enable cluster failover between sites.

C. Implement both Exchange servers in a local DAG. Install EMC Replication Enabler for Exchange (REE) and install Replication Manager agents on all severs in the DAG.

D. Implement both Exchange servers in a cluster with shared disks. Use separate LUNs and RAID Groups for the Database, Log and Quorum. Install and enable EMC Replication Manager for remote replication.

Correct Answer: C

Question 2

A customer with a VNX configured with homogenous pools wants to upgrade the performance of their array. The customer has a limited budget.
Which approach would you recommend?

A. create a homogeneous flash pool

B. Create a FAST VP Tier

C. Create a R5 3+1 FAST Cache

D. Create a mirrored FAST Cache

Correct Answer: D

Question 3

A storage administrator with a VNX Unified solution is using the CLI to monitor the daily storage performance. They must type long commands to examine the statistical types and names to get the desired results. You have been asked to accelerate and ease the monitoring tasks.
What is the most suitable solution?

A. Create user-defined statGroups

B. Use Unisphere Statistics for File

C. Collect statistics from log files

D. Use Celerra Monitor Tool

Correct Answer: A

Question 4

A customer created a Thin LUN, enabled compression on a Pool, and installed their email application environment. The application is showing poor performance. Which workload characteristic of the application would produce poor access times on a compressed LUN?

A. Small random reads

B. Small random writes

C. Uncompressed or host based data

D. Sequential reads

Correct Answer: B

Question 5

Replication Manager (RM) is being used to create replicas for a SQL server installed on VMFS residing on an ESX server. The operations are sent from a separate virtual RM proxy host. However, the RM is not able to successfully create copies.
What is the most likely cause of the failure?

A. The RM proxy must be a physical host.

B. The RM proxy host is already registered with the RM server.

C. The RM server credentials were not properly entered for the RM proxy.

D. The RM proxy is unable to connect to the RM Server over port 443.

Correct Answer: D

Question 6

You are working with a customer to design a VNX for Block solution for their SQL database. They currently have a CX4-480. In the past they have co-located their database and log files. In the new VNX design, the database will be placed in a FAST VP enabled pool. The transaction logs will be placed on a traditional RAID Group. Your customer needs help determining the number of spindles they need to satisfy the needs of their transaction logs.
You know the following:
-Transaction period: 8 hours (business day) -Throughput during transaction period: 240 GB
How many RAID 1/0 15K spindles will the transaction log volume require?

A. 4

B. 8

C. 16

D. 10

Correct Answer: C

Question 7

In VNX with MCx, if the Block compression rate is set to high, what is the initial compression bandwidth?

A. 32 MB/s

B. 4 MB/s

C. 25 MB/s

D. 7 MB/s

Correct Answer: C

Question 8

A customer has a VNX system to provide storage for a VMware 4.1 Cluster with 4 ESX hosts. MS Exchange servers and other application servers will be hosted on VMs. The customer wants to have the best performance at the VMFS disk/volume level.
What would you recommend when creating boot and email stores using the Virtual Infrastructure client?

A. LazyZeroedThick mode on the same LUNs

B. EagerZeroedThick mode on separate LUNs

C. EagerZeroedThick mode on the same LUNs

D. LazyZeroedThick mode on separate LUNs

Correct Answer: B

Question 9

You received a call from a customer asking to help troubleshoot why they cannot select dvols using MVM from their remaining pool LUNS to create a stripe volume.
What could be a reason for this?

A. All Thick LUNs must be used first

B. LUNs must be on the same SP

C. All Thin LUNs must be used first

D. LUNs must not exceed 18 TB in size

Correct Answer: A

Question 10

A customer is in the design phase of their SQL server implementation. They request your guidance concerning the number of disk drives needed to properly configure the database for performance. The current utilization of the database is shown below: S
-85% reads and 15% writes -10K SAS disks -RAID 1/0 -1150 IOPS
What is the minimum number of disk spindles required to service the random I/O requests during usage of the SQL Server database?

A. 8

B. 14

C. 10

D. 12

Correct Answer: C

Question 11

A customer is implementing a VNX for File solution in a performance-oriented application environment. There are Windows and Linux VM clients accessing the file systems. The customer wants to track both file system and DataMover utilization. The Performance Administrator prefers GUI to CLI access.
What would you recommend?

A. Unisphere Analyzer

B. Unisphere Statistics for File

C. server_stats

D. Custom monitoring script

Correct Answer: B

Question 12

A VNX storage system is being configured to provide storage for an Exchange 2010 implementation for 2,000 users. Performance and reliability are more important than cost for the customer.
What RAID configuration should be used?

A. A RAID 6 Group which can accommodate two simultaneous drive failures

B. A RAID 1/0 Group on a single DAE

C. Two RAID 5 Groups in a striped metaLUN across two DAEs, one from each back end bus

D. A RAID 1/0 Group, spread across two DAEs on two separate storage system busses

Correct Answer: D

Question 13

A customer is designing an environment that utilizes thin LUNs on a pool. The customer makes capacity calculations before they create the thin LUNs, and determine that three thin LUNs are required. After the customer creates them they experience a capacity shortage.
How much overhead should the customer have calculated into the usable capacity for each thin LUN?

A. 1 GB

B. 3 GB

C. 5 GB

D. 500 MB

Correct Answer: B

Question 14

Your customer wants to expand each back-end bus to the maximum of 10 enclosures attached via an LCC with an edge expander. They are concerned that it will add extra latency.
What should be your response?

A. Max latency will be 5 microseconds

B. Max latency will be 10 microseconds

C. Max latency will be 1 microsecond

D. There will be no additional latency

Correct Answer: A

Welcome to TestSimulate

EMC VNX Solutions Expert Exam for Technology Architects (E20-880) Free Practice Test