EMC E20-885 Online Practice Questions and Exam Preparation

EMC E20-885 Online Questions & Answers

• Question 261:

  In supporting a VDI environment, which are factors in estimating the number of boot I/Os required per virtual desktop?

  A. Data required to boot, boot time, I/O size
  B. Maximum disk IOPS, desktop RAM allocation, I/O size
  C. Hypervisor nodes in cluster, I/O size, desktop RAM allocation
  D. Data required to boot, boot time, maximum disk IOPS
  A. Data required to boot, boot time, I/O size

• Question 262:

  A customer has DR enabled between their primary and backup sites using EMC VNX and MirrorView. SnapView Snapshots are enabled at the backup site. A third VNX array is installed at the backup site. The customer tries to use Incremental SAN Copy (ISC) to pull data updates from a SnapView snapshot onto stopped Web server LUNs located on the new VNX. The customer reports they are not able to configure the SAN Copy session.

  Why does the customer need to rework this solution?

  A. The source for Incremental SAN Copy must be on the secondary mirror, and the mirror needs to be fractured.
  B. The source for Incremental SAN Copy must be on the primary mirror, and the mirror needs to be in synchronizing state.
  C. The source for Incremental SAN Copy must be on a SnapView snapshot from the synchronizing primary mirror.
  D. The source for Incremental SAN Copy must be on a SnapView snapshot from the fractured secondary mirror.
  A. The source for Incremental SAN Copy must be on the secondary mirror, and the mirror needs to be fractured.

• Question 263:

  What action in RecoverPoint/SE will cause a full volume sweep?

  A. Detaching the Write Splitter for a replication volume
  B. Pausing replication for a Consistency Group
  C. Changing the assigned primary RPA for a Consistency Group
  D. Rebooting the primary RPA
  A. Detaching the Write Splitter for a replication volume

• Question 264:

  A customer has two sites, with a VNX system at each site. The local site has four application LUNs of 512 GB each. They are replicated to the remote site with MirrorView/S. The link between the sites has an effective bandwidth of 100 MB/s. The application generates 1,000 random IOPS of 4 kB with a 3:1 R/W ratio on each of the LUNs. The link fails for five minutes.

  How much data is copied to the secondary LUNs as part of the resynchronization process?

  A. 4.6 GB
  B. 18.3 GB
  C. 36.6 GB
  D. 73.2 GB
  D. 73.2 GB

• Question 265:

  A customer configures replication between two data movers for their VDM environment. The primary data mover has one 1 Gb copper ethernet port and the destination Data Mover has one 10 Gb optical network port. The customer completes a failover test and then remote clients report they are unable to access data. The customer requests your assistance. What is the most likely cause of the issue observed during failover test?

  A. The interface speeds do not match on both Data Movers
  B. The interface on the Data Movers have a Duplex mismatch
  C. The interface names do not match on both Data Movers
  D. The interface medium do not match between Data Movers
  C. The interface names do not match on both Data Movers

• Question 266:

  You are installing a new EMC VNX. All flash drives will be provisioned for FAST Cache. The VNX has the following hardware: 6 DAEs

  

  24 Flash drives

  

  24 SAS drives

  

  24 NL-SAS drives

  

  How should the drives be physically located for better performance and stability?

  A. The Flash drives should be placed on DAE0 and DAE1, followed by the SAS drives, and then the NL- SAS drives
  B. The SAS drives should be placed on DAE0 and DAE1, followed by the Flash drives, and then the NL- SAS drives.
  C. The SAS drives should be placed on DAE0 and DAE1, followed by the NL-SAS drives, and then the Flash drives.
  D. The physical location of the drives does not affect the performance of a VNX.
  B. The SAS drives should be placed on DAE0 and DAE1, followed by the Flash drives, and then the NL- SAS drives.

• Question 267:

  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. Enable Engineering Mode and delete the mirrors.
  B. Put the original CLARiiON DAEs into the VNX and delete the mirrors.
  C. EMC Support must be engaged to delete the mirrors.
  D. Use Navisphere Secure CLI to delete the mirrors.
  D. Use Navisphere Secure CLI to delete the mirrors.

• Question 268:

  A customer plans to migrate from a legacy IBM storage array with a new EMC VNX. Hosts connected to the legacy array are critical to the business and availability is the customer's number one priority. Which do you recommend the customer use to migrate to VNX?

  A. Open Migrator
  B. SAN Copy
  C. VNX Replicator
  D. Replication Manager
  A. Open Migrator

• Question 269:

  What is a factor that determines the time needed to transfer data during the initialization of RecoverPoint/ SE?

  A. Storage performance
  B. Number of Consistency Groups
  C. Write splitter type
  D. Number of replication sets
  A. Storage performance

• Question 270:

  You are investigating a performance problem on a VNX. The customer is using the array for storage for their VMware servers, which is connected through a dual port 10G iSCSI IO module. They have divided the available disks into two separate Storage Pools.

  They are seeing 40% CPU usage on SPA and 85% CPU usage on SPB. After investigating, you find that all LUNs in the second Storage Pool are now owned by SPB. How should this be explained?

  A. Block Deduplication is enabled for all LUNs in the second Storage Pool.
  B. SPA iSCSI NIC has malfunctioned and all LUNs have trespassed.
  C. Failover mode has not been set correctly.
  D. SPB had a CPU malfunction and needs to be replaced.
  A. Block Deduplication is enabled for all LUNs in the second Storage Pool.