Free E20-885 Exam Dumps Preview

A customer wants to implement file system replication between two EMC VNX systems. The source production file system contains data from a sequential workload that resides in a pool composed of NL-
SAS drives.

The destination file system will be configured with a SnapSure schedule for data sharing. Due to cost concerns, the destination file system and SavVol volumes will also be placed on NL-SAS.

What should you tell the customer about this configuration?

A storage administrator recently replaced their secondary EMC CLARiiON with a new EMC VNX. The secondary CLARiiON was used to store secondary images of their production LUNs using MirrorView/S.

After the replacement, the storage administrator realizes they fractured the mirrors to the primary CLARiiON, but did not destroy them. The storage administrator reports they are not able to destroy the old mirrors and receives an error message stating the secondary SP cannot be reached.

What is the recommended method to destroy the old mirrors?

A customer wants to convert a RP/SE cluster to RP/EX.

What must be done after completing the upgrade using the Deployment Manager wizard?

A customer has a highly active ordering application with a R/W ratio of 2:1. The application peaks at about 16,000 application IOPS during the day.

What is the minimum required number of eMLC Flash drives and 10K rpm SAS drives needed in a R5 Storage Pool to meet the performance requirements?

A customer runs their virtual environment on a cluster of ESX v4.0 hosts connected to an EMC VNX. They report there are long delays when they create large eager-zero thick virtual disks. You recommend they upgrade their virtual environment to vSphere v5.0 to benefit from its VAAI features.

Which VAAI primitive addresses their issue?

A customer plans to replicate the active database copy of an Exchange Server 2010 DAG (Database Availability Group) to their warm DR site using RecoverPoint/CRR. The Exchange server hosts a total of seven databases, and the sites are within eight km of each other.

Which guideline must be followed for the solution to function as expected?

A customer requests a performance review of their EMC VNX before FAST Cache is implemented. You notice a dedicated LUN has a write size of 4 KB, and the disks are performing writes of 8 KB.

What is causing this behavior?

An implementation engineer installs a DR solution to protect ten CIFS servers at site A. VNX Replicator will be used to replicate these servers and their shares from Site A to Site B.

How many Virtual Data Movers should be configured for the servers to be protected on Site A to ensure maximum portability?

An Oracle DBA creates a new database and requests a LUN to store the online redo logs.

What is the recommended configuration for this LUN?

A customer has a Windows-only environment connected to an EMC VNX for File at their main campus site.
The customer plans to install a new EMC VNX at a remote branch office site. The new VNX will be used to implement a DR solution for their main campus VNX using VDMs and several quota-enabled file systems shared and available to clients via CIFS.

Which solution do you recommend to the customer?

An Incremental SAN Copy (ISC) session fails to start. You investigate and determine the source LUN has trespassed to the peer SP.

How can SAN Copy session be recovered?

How many clusters can be added to an existing RecoverPoint/SE cluster?

A System Administrator is configuring Data Mover interfaces. They want to keep the same IP addresses on both sites, but also want to reduce the risk of having duplicate IPs on the same network.

How can this be accomplished?

A customer has two EMC VNX configured to replicate between sites. Each VNX has dual Control Stations.
The primary Control Station at the source site fails at 6 p.m. and reboots. At 8

You are implementing FAST Cache. You want to disable FAST Cache on any LUNs that do not have the correct I/O access pattern for FAST Cache. All LUNs are 4+1 R5, with sizes between 50 GB and 500 GB.

Which answer shows an access pattern that should be avoided?

A financial company plans to implement an EMC VNX for several application servers. The application servers run high performance data mining processes for large databases and reporting. The customer requires a storage configuration that balances performance and cost.

Which disk RAID type will best meet the customer requirements?

A customer has a newly installed EMC RecoverPoint cluster with vRPA configuration. The IP based replication is not working. The newly installed vRPA VNX splitter is shown as down.

The splitter log error message states:

getOverrideScanInterval: no path to any box in any cluster - assuming disaster in all clusters

What could be the possible reason for this?

You plan to migrate from an EMC CLARiiON to an EMC VNX. The VNX will present CIFS shares to
several Windows application hosts.

What tool would you use to test the performance metrics of the CIFS shares on the new VNX prior to the migration?

A client is planning a virtualized SQL Server environment with remote protection. They need virtual machine consistent, point-in-time copies of the database as backups.

Which option meets this scenario?

A customer currently has a RP/SE single cluster system. They want to add an additional VNX array for replication. The business requires replication from the existing VNX to the new one.

How would they best implement this configuration?

An administrator is attempting to vMotion a VM from one vSphere ESXi 5.0 host to another. The ESXi servers are connected to three VNX arrays on the fabric. The vMotion fails.

What is the most likely reason?

A customer runs a CAD/CAM application on an VNX file system. The application is accessed by users at multiple sites. The users report degraded response during peak access periods. Performance monitoring of the file system shows a higher than expected disk queue length and a higher than expected number of
unused blocks pre-fetched.

What is the likely cause of the performance issue?

Two new EMC VNX were implemented at a customer's primary and backup sites. Each VNX has a single active Data Mover. Multiple VDMs are configured on both VNX, each with a CIFS file system. The default mapping solution was implemented in a primary-secondary configuration.

The customer completes a security audit and then observes new user authentication fails on the secondary site.

Which TCP/UDP port is being blocked by the firewall?

Refer to the exhibit.

During an Incremental SAN Copy bulk copy session, on the Source LUN, data blocks A, B, C, and D are all transferred to the Destination LUN. Before data block E can be sent to the Destination LUN, data blocks B
and E are updated and become data blocks B` and E`.

What data will be shown in the Transfer DeltaMap, Tracking DeltaMap, and Destination LUN once the start copy session is complete?

What is the default file system type when creating a File System on a VNX?

A customer recently installed vSphere ESXi 5.0 on a five host cluster attached to an EMC VNX using FCoE. EMC PowerPath/VE with a full license is installed on all hosts in the cluster.

What is the default load balancing policy that will be used?

A VNX storage system has four 15-drive DAEs. There are fifteen flash drives installed in a single DAE. The customer plans to implement traditional LUNs for this configuration.

What is recommended SAS LCC port configuration?

What is the state of the target replica storage during the RecoverPoint/SE replication distribution phase?

You have implemented Block Deduplication on a pool servicing a workload with a 60:40 read/write ratio, and consisting of small random IOs. This pool contains a large amount of duplicate data. After the first few deduplication processes, you notice that host response time has increased significantly.

What could be the cause of this impact on performance?

A customer placed their application data on a thin LUN created from an existing pool. The thin LUN is reaching capacity and cannot be expanded due to capacity constraints on the pool.

What is the best way for the customer to reclaim some of the capacity on the thin LUN?

Refer to the exhibit.

A VNX Snapshot is started on a thick LUN at 09:37. The customer notices that throughput declines after 09:49 or so. They want to know how Primary LUN throughput will decrease further over time.

What should be your explanation?

You are setting up Perfmon to record the number of I/O per second for a customer's clustered SQL Server prior to a migration to an EMC VNX.

Which Perfmon counter should you add to the log view to obtain this information?

Which part of the VNX initiates failover of a Blade?

An EMC VNX with EMC FAST Suite will be used as block storage for four Exchange 2010 servers. The Exchange servers will be used as mailbox and archive servers. The VNX has the following disks in two DAEs:

- Five 200 GB Flash drives
- Fifteen 600 GB SAS drives
- Ten 2 TB NL-SAS drives

The customer wants to implement auto-tiering.

What do you advise the customer?

You are implementing a VDI solution provided by the project Solutions Architect at a customer site. After application testing, the Storage Administrator states that the solution is spread across more disks than anticipated.

What explains why the solution design requires more disks than initially planned?

A customer is implementing ESXi 5.0 into their heterogeneous environment. Due to separation of duties, the networking and virtualization team must work together to minimize the risk of downtime due to misconfiguration.

What ESXi feature can be implemented into the existing switch infrastructure to ease management and avoid configuration issues?

A customer plans to use MirrorView/A to replicate between two VNXs communicating directly with each other. The VNX are 160 kilometers apart. The customer cannot purchase a dedicated fiber cable between sites or any additional hardware.

What protocol should be used between sites?

A customer configured an EMC VNX to serve home directories to users. Users report intermittent timeouts accessing the home directories. While troubleshooting, you observe you can successfully connect to the file share, and can ping the VNX interfaces.

What is the most likely cause of this performance issue?

You receive a call from a customer asking why they are not getting optimal performance on their new Block pool LUNs that they created last week.

How could the customer obtain more predictable performance?

Click on the calculator icon in the upper left-hand corner.

A customer is deploying an Exchange 2010 environment on an EMC VNX. There will be 30,000 mailboxes distributed across mailbox servers within a DAG (database availability group) that maintains three database copies. Each user sends approximately 350 messages per day. The customer wants to use 600 GB 15K drives in a RAID 5 group.

How many spindles are needed to support the performance required for this Exchange environment?

Which RecoverPoint feature allows multiple RPAs to provide replication processing for a single Consistency Group?

Exchange 2010 is installed on a virtual machine using VMDK files. Replication Manager is being used to take snapshots of the virtual machine files and back them up to disk. After a few weeks, the Exchange server stops functioning.

What is the most likely reason for the Exchange failure?