E20-880 Exam Questions

Which action would be most effective in reducing the performance impact of a Snapshot on a Source LUN?

A customer has a VNX system to provide storage for a VMware Cluster with five ESX hosts. Each ESX host has one dual-port FC HBA connected to two FC switches. They are using VMware...

A customer would like to configure their VNX for File for the highest possible level of client availability. There are five Ethernet ports on a single DataMover and a single Ethern...

A customer would like to use five Ethernet ports on a VNX to increase the port and switch availability. Two non-stackable Ethernet switches are available for the VNX and both suppo...

A client has asked for assistance with designing his Exchange environment. The environment today is fully virtualized and Exchange will be as well. The client is concerned about lo...

A customer has created a thin LUN, enabled compression on a LUN Pool, and installed their Exchange environment. The Exchange application is showing poor performance. Which workload...

A customer is experiencing performance issues during their anti-virus scanning in their VMware environment. They have determined the problem to be a storage issue. Full clones on S...

A Customer is planning to build a VDI environment on a VNX array. The customer is working to determine what type of VM replicas would be acceptable in their environment. It needs t...

A Customer is planning to build a VMware DTaaS environment on a VNX array. The customer is deciding what type of VM replicas would be acceptable in their environment. It needs to h...

A customer built a VDI on a VNX array. The customer currently has only NL-SAS drives. The customer wants to simulate I/O characteristics of users accessing the storage from the vir...

Click the calculator icon in the upper left-hand corner. A customer is building out a VDI environment of 1000 light users and 50 heavy users. They plan to use Boot from SAN for all...

What factors can be used to determine the number of IOPs per desktop that a VNX will need to satisfy during the boot of a virtual desktop?

A company needs to create clone LUNs on a VNX storage system. These LUNs will be used by Replication Manager to back up a Microsoft Exchange server database and log LUNs. Where mus...

A customer is running a data warehouse server with dual HBAs connected to a SAN. A performance analysis of the server shows high utilization. This server needs to be backed up to a...

A customer's database resides on a RAID 5 Pool with SAS drives. Which best practice should be followed to optimize Reserved LUN Pool disk performance?

A customer is supporting 800 Exchange users on a VNX5700. The users are divided among four Exchange storage groups using a total of eight LUNs each for data and logs and two LUNs f...

A customer implemented full SAN Copy with default settings in order to copy 60 DMX array volumes to a VNX storage system. After several hours, they determine that the process is ta...

A customer has deployed a new application on a host using VNX storage. The new application I/O size is 512 KiB, has a 50/50 read-write ratio, and its write behavior is sequential a...

An application generates 500 random 8 KiB IOPS with a R/W ratio of 3:1. An asynchronous mirror is started on the application LUN. The update cycle is configured to be 30 minutes, a...

As a result of suffering a catastrophic failure, your customer has requested a DR solution. The solution must introduce a higher level of availability for their Exchange 2010 syste...

A customer has recently implemented Microsoft Exchange 2010 on a VNX storage system that hosts a variety of application servers. The Exchange implementation is currently using RAID...

A clone source LUN is 512 GiB in size. It performs 500 random 8 KiB IOPs with a 3:1 R/W ratio. As part of ongoing testing, the clone is fractured for 10 minutes and then resynchron...

A customer with an existing VNX for File implementation wants to enable deduplication on a file system, based on the following specifications: - Idle File System - Number of files:...

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 want...

You are working with a customer that recently refreshed their hardware with a VNX storage system configured with Flash drives. During this swap customer also migrated their Exchang...

A company recently purchased a VNX storage system to support its clustered SQL Server environment. You are designing the disk layout. Based on EMC best practices, what design chara...

A customer is migrating an application to a virtualized environment. After the implementation is completed they realize that performance is below their expectations. You are tasked...

You have designed a VNX for File solution for a creative content provider. The solution involves 10, 2 TiB file systems. Each file system has a Checkpoint taken every hour, refresh...

Your customer recently upgraded their IP switch hardware. Since the upgrade, the customer is experiencing performance degradation on certain NFS exports configured on a VNX for Fil...

A Storage Administrator with a VNX Unified solution is using the CLI to monitor daily storage performance. They must type long commands to examine the statistical types and names t...

A VNX for File administrator is implementing SnapSure for backup staging. The administrator is concerned that this solution might affect the Production File Systems (PFS). You are...

A customer is using a virtualized environment with a large number of NFS datastores presented from a VNX system. They are experiencing more than expected network traffic on their d...

A customer with a virtualized environment has asked you to architect a new VNX storage solution utilizing their many NFS datastores. They are also deploying a new Cisco Unified Com...

Your customer is reporting less than optimal performance for their online payment processing application. The payment processing application is running on a Windows Server cluster...

A customer wants to mark an Incremental SAN Copy Session at 12:00 UTC, and start the transfer of data at 20:00 UTC. Their data access pattern consists of small block I/O, with arou...

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...

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 custome...

Your customer is reporting less than optimal performance for their online payment processing application. The payment processing application is running on a Windows Server cluster...

If an SP fails within a VNX system, how many drives can the surviving SP address at the same time if array ports 0 and 2 are used?

Your customer has a Microsoft SQL installation on a VMware guest Windows 2003 Server using RDM. The ESXi server uses a VNX system. What would you recommend to your customer to avoi...

You are conducting an analysis of a Celerra system to migrate the data to a new VNX Unified storage subsystem. You want to collect statistical information about the CIFS sub-system...

Your customer has LUNs with a total size of 25,000 GiB. The total I/O load is 10,000 IOPS, with a 4:1 R/W ratio. Analysis of your customer's data indicates that data skew is 95%. R...

A customer is interested in implementing SSDs to improve response time for a sensitive database that generates mostly small random reads. The compute platform for this customer is...

During a migration from a Windows server to a VNX for file how should virus scanning for the VNX be configured?

When will subsequent compressions occur on a LUN that has compression enabled?

Click the calculator icon in the upper left-hand corner. A Snapshot Source LUN performs 650 random 16 kB IOPs, with a 4:1 R/W ratio. At what rate is chunk data written into the RLP...

Click the calculator icon in the upper left-hand corner. A clone source LUN is 2 TB in size. It performs 450 random 16 kB IOPs with a 2:1 R/W ratio. As part of ongoing testing, the...