E20-816 Exam Questions

Your customer has an Oracle 11g environment that requires a database to be recoverable within a few minutes over an extended distance. Which best practice would you recommend to en...

What defines the time to restart Exchange?

A colleague is demonstrating the VMAX virtual LUN migration feature. They configure four test devices to move from FC RAID 5 volumes to SATA RAID 6 volumes and start the migration....

When selecting Symmetrix data protection on a VMAX, why would you propose CHAP?

A customer is implementing Replication Manager to create local clone replicas of their SQL database on their VMAX array. The customer is concerned the RM replica jobs may run for a...

A customer reports their hosts are performing slowly after migration to a new VMAX array. You review performance data from the VMAX and note the following: - I/O sizes are 16 KB. -...

Your customer has security and management concerns with SRDF and Timefinder scripts that are currently running on many production hosts. Symacl will be used to reduce or limit stor...

A customer has implemented an Oracle application on a VMAX with a mix of Enterprise Flash Drives (EFD) and FC 15K drives. EFD are configured in RAID 5 and FC 15K both in RAID 5 and...

A colleague configured new thin volumes on an EMC Symmetrix VMAX in preparation for a customer's Exchange 2010 environment. The Exchange environment will be configured on a 4-node...

A customer is implementing Replication Manager to create local clone replicas of their SQL database on their EMC VMAX array. The customer is concerned the RM replica jobs will run...

A customer is using Replication Manager to make local TimeFinder/Clone backups of their Exchange 2010 environment. The customer reconfigured the Exchange environment to place the l...

Four days after configuring FAST-VP on a new VMAX array with EFD, FC and SATA tiers you notice that FAST-VP is moving data, but only 20% of the EFD tier has been consumed. The acti...

Click on the calculator icon in the upper left corner. A customer would like to add a new database application to their VMAX. This application is expected to produce 3000 I/O per s...

Click on the calculator icon in the upper left corner. A new Oracle database is being deployed on a 4-engine VMAX array. The DBA requests 2TB of usable capacity. Which configuratio...

A company is evaluating SRDF/Star. They are concerned that the RDF daemon represents a single point of failure. How could this concern be addressed?

Refer to the exhibit. Host C is the remote site to an existing production site, Host A in the illustration. Host D is remote site to Host B. The customer would like to have data-at...

Within a VMAX storage environment, what would be a benefit of implementing OFA (Oracle Flexible Architecture) supporting an Oracle database application environment?

A company has a VMware vSphere ESXi 5.0 host. They have been noticing performance issues when they receive bursts of heavy I/O workloads after a relatively low period of CPU utiliz...

An SRDF/Star customer wants to move their production from the current workload site to one of the target sites. Which operational step is necessary before executing the symstar hal...

A customer has a new four engine Symmetrix VMAX storage array installed at their site. The array will be the target for a consolidation of three Symmetrix DMX storage arrays. The c...

A customer has a VMAX 1 Engine with 128 GB of cache. The disks are configured in RAID 1 and SRDF is not implemented. The applications on the VMAX perform heavy writes with a ratio...

Two weeks after configuring FAST-VP on a new VMAX array with EFD, FC and SATA tiers you notice that FAST-VP is no longer moving data to the SATA tier which is 82% full. The active...

A company plans to lay out their Oracle 11g OLTP database across four Symmetrix VMAX LUNs. Which Oracle component can be co-located with the Control Files without impacting perform...

A customer implemented an Oracle application on a VMAX with a mix of Enterprise Flash Drives (EFD) and FC 15K drives. EFD are configured in RAID 5 and FC 15K both in RAID 5 and RAI...

What does basic Symmetrix performance knowledge allow you to do?

SRDF/EDP is running in Adaptive Copy Disk mode from the source (R1) site to the secondary (R21) site. Which SRDF mode is permitted between the R21 and the R2 sites?

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

You are planning the deployment of a new Symmetrix VMAX array for two different applications. The two applications should not share back-end directors, ports, or disks. How should...

A customer recently reconfigured their Exchange 2010 environment. They placed the log and system files on the L:\ drive and mounted the mailbox stores on L:\SG1DBMP. They report th...

Your customer decided to implement FAST VP on a two engine VMAX. The requirement is approximately 1.5TB for the Enterprise Flash Drive Tier. Which drive configuration option provid...

A customer is planning an Oracle 11g implementation. You have been assigned to design the Oracle storage architecture. You recommend placing redo logs files on separate drives from...

A company has three data centers that they use to run Concurrent SRDF/Star. All links between the workload and synchronous target sites were temporarily unavailable. They are unsur...

A customer requires a restartable Oracle database up to and including the last committed transaction. Which SRDF best practice solution would you architect?

A company is considering different options in the storage placement of a VMware vSphere 5.0 swap file. When considering placement options, what type of storage would vMotion perfor...

Prior to creating your Symmetrix VMAX architecture for SQL, you are given a Perfmon Log view containing data for your database LUN. The file contains read and write IOPS collected...

Which data protection benefit does Symmetrix Service Credential provide?

A company is using VMware vSphere 5.0 and plans to use the Large Memory Page Size option. What is the page size ESXi assigns to the guest VM?

You are designing a new Symmetrix VMAX storage array to replace a client's Symmetrix DMX4. Performance data is captured and examined for the DMX4. During the discovery phase, the c...

You are designing a Symmetrix VMAX Virtual Provisioning solution for a VMware vSphere environment. What format does EMC recommend when creating a virtual disk for a Virtual Machine...

During Symmetrix VMAX performance analysis, you notice that a collection of VMAX devices has a front-end I/O rate that is much lower than its back-end I/O rate. What might be the r...

You are planning a VMAX configuration with FAST VP for a customer's Exchange 2010 environment. The customer requests the database be placed on thin devices and the log files be pla...

A new Symmetrix array is being designed for an Oracle data warehouse. The workload is expected to be primarily reads for batch reporting. The customer wants to maximize usable capa...

A company plans to deploy Symmetrix VMAX arrays in their VMware vSphere environment. The ESXi hosts will be connected to the VMAX arrays over a FC SAN. What VMAX FA port flag must...

A new EMC customer recently installed their first VMAX and a complete suite of EMC management tools. Their lead capacity planner attended training and has started monitoring the VM...

A customer has an environment where one application has a very high, sequential, write- intensive workload. They would like to use Dynamic Cache Partitioning to isolate this worklo...

Click on the calculator icon in the upper left corner. A new storage request is submitted for the production instance of an new application from development. The request is for 3 x...

What allows VMkernel to reduce memory duplication in the virtual machine's memory?

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 large customer has a formal Capacity and Performance Measurement (CPM) department. Some of this customer's business users describe the environment as good, while others describe...

Click on the calculator icon in the upper left corner. A new Oracle database is being deployed on a VMAX array. The DBA requests 4TB of usable capacity to be managed by Oracle ASM....