E20-816 Exam Questions

A customer has the following storage configuration for a specific application: - Symmetrix VMAX 4 engine with 128 GB cache per engine - SRDF/A with two 1 Gbps links to remote site...

You have been tasked with gathering performance data for a Microsoft SQL server database that will be migrated to a Symmetrix VMAX. Which Perfmon counter must you measure prior to...

Which Symmetrix VMAX component is involved in measuring sampled average response time?

Which change in a Symmetrix VMAX workload will typically result in an increase in the read hit rate?

A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server has 4 HBAs connected at 8Gb/s. Due to limited SAN switch ports only port 0 on each VMAX...

A customer needs to collect performance data from the HP-UX hosts in the environment. Which collection utility is used?

For a 2 engine VMAX, what is the minimum number of Enterprise Flash Drives required to ensure balanced performance across the backend excluding hot spares?

An existing 2-engine VMAX array has 192 x 450GB 15K Fibre Channel drives in a single Virtual Provisioning pool. Two Linux database hosts are connected to the array and both are run...

A customer is planning a new Exchange 2010 environment on their EMC VMAX. The customer asks how they can backup volumes containing active mailbox databases. What do you advise the...

A customer is planning a new Exchange 2010 environment on their EMC VMAX. The customer asks how they can backup volumes containing passive mailbox database copies. What do you advi...

A company is in the process of setting up a VMware vSphere 5.0 ESXi host. Which power management setting should be set on the physical host BIOS that the ESXi hypervisor will be in...

You have been requested to design a Symmetrix VMAX FAST-VP storage solution. When considering skew, what is a primary performance metric that should be used during the design proce...

A customer is implementing a new ESXi cluster and will be provisioning 50TB of storage from Symmetrix Pool Storage. The size of the LUNS being presented is 150GB. Based on EMC Best...

A Symmetrix VMAX storage array is designed for performance with the following configuration: What will be the limiting factor for performance?

A customer has several Solaris 10 hosts that they will connect via FC to an EMC VMAX. The hosts are all dual-pathed with PowerPath installed. Each host will be assigned 5 volumes o...

A large customer has a formal Capacity and Performance Management (CPM) department. This customer's business users describe the environment as both good and challenged. They are ac...

Click on the calculator icon in the upper left corner. A customer is implementing an Exchange 2010 environment for 500 users on an EMC Symmetrix VMAX and has the following requirem...

Your customer just enabled symacl on a pair of existing VMAX arrays with SRDF/S replication configured between the frames. What needs to be done next to enable the local management...

A customer has a Symmetrix VMAX array. Symmetrix back-end utilization is about 70%. They would like to increase their workload by 10%. What would be the expected change in the resp...

An EMC Customer has deployed an ESXi cluster on Symmetrix storage and the deployment of VM Servers is slow. Which technology would speed up the deployment process?

Which Microsoft utility enables the storage administrator to align sector and track boundaries for the purpose of increasing storage or device performance for SQL Server 2005?

Host A and Host B are connected to a Symmetrix VMAX, the hosts do not share volumes. The customer plans to implement PowerPath Encryption on Host A. Which action will be required o...

In Windows 2003 SP1 and greater, which Windows utility is used to properly align partitions to track boundaries?

The customer is looking to deploy a large SQL environment to a ESXi cluster. The main I/O Load of the environment will be OLTP, with a high rate of transactions. Which Raid Type sh...

The links between an R1/R2 pair are logically suspended and a half swap is performed on the R2 device. What describes the RDF pair configuration?

What is a write pending slot in a Symmetrix VMAX?

A customer plans to deploy Oracle on their new EMC VMAX. They are concerned about the performance of the redo log files. You recommend isolating these files to their own set of dis...

You are designing a boot from SAN solution for VMware ESXi servers connected to a Symmetrix VMAX storage array. What is a consideration?

A customer has a Symmetrix VMAX array shared between several different business groups. Each of the hosts has Solutions Enabler installed to support TimeFinder operations. There is...

A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server has 4 HBAs connected at 4Gb/s. Due to limited SAN switch ports only port 0 on each VMAX...

A customer has a Symmetrix VMAX attached to 12 UNIX servers through a SAN fabric. They would like to prevent unauthorized access at the port level. Which Symmetrix security feature...

You are architecting a VMware virtualized Exchange 2010 solution that will include replication of the Exchange volumes using VMware snapshots. Which type of storage should be prese...

Refer to the exhibit. A customer has been performing VLUN Migrations between identical pools and noticed the migration times have varied from minutes to hours. What would explain t...

A customer is deploying a multi-node ESXi cluster and DRS to automatically move VM Servers using vMotion around the cluster. What is the variable to be considered in the design of...

Click on the calculator icon in the upper left corner. Refer to the exhibit. You are designing the Symmetrix VMAX architecture for a DAS-to-SAN SQL Server migration. Currently all...

Refer to the exhibit. A composite group spanning two Symmetrix arrays is set up to run SRDF/Star using Cascaded SRDF as illustrated in the exhibit. Which condition must be met befo...

Refer to the exhibit. A customer has four Symmetrix logical volumes assigned to a host for a specific application. The Symmetrix has FAST enabled and configured for performance man...

Refer to the exhibit. In the SRDF/Star environment shown in the exhibit, what is the result of issuing the symstar halt command from the host at the workload site?

Cascaded SRDF is running in SRDF/A mode from the source (R1) site to the disk-based secondary (R21) site. Which SRDF mode is permitted between the R21 and the R2 sites?

A company uses VMware ESXi Servers and Symmetrix VMAX storage arrays. Which EMC Virtual Storage Integrator feature allows the allocation of new Symmetrix VMAX storage to Virtual Ma...

A company has a VMware vSphere 5.0 ESXi host using NUMA. This host is experiencing poor performance. Which BIOS settings on the ESXi host could help alleviate this performance issu...

A data warehouse team is reporting poor performance on their batch reports. The database runs on a Solaris host connected to a DMX-4 array with Fibre Channel drives sized to suppor...

A customer requested a point-in-time replica of their Oracle database. You have architected a TimeFinder/Clone environment to meet the customer's requirements. However, the custome...

When setting up Symmetrix Access Control, what must be completed before all hosts have been granted Access Control rights (via the Unknown Group)?

Refer to the exhibit. A customer engaged technical support for a performance issue with their application. The exhibit shows IOPS for the four FA processors utilized to connect the...

Refer to the exhibit. A Customer is designing FAST policies to be implemented. Which FAST policy is valid?

Click on the calculator icon in the upper left corner. Refer to the exhibit. You are designing the Symmetrix VMAX architecture for a DAS-to-SAN SQL Server migration. Currently all...

Refer to the exhibit. A customer is reviewing the overall SAN Fabric and needs to determine data access risk points. Which numbered item will provide an intruder access to the SAN...

Refer to the exhibit. When Concurrent SRDF/Star is enabled, what is the purpose of the two SDDF sessions at Site B?

You are planning a migration for 20 VMware ESXi 5.0 servers from a DMX-4 to a new EMC VMAX array. Each server uses VMFS volumes and hosts more than 50 VMs. The customer reports the...