EMC E20-885 Online Practice Questions and Exam Preparation

EMC E20-885 Online Questions & Answers

• Question 251:

  A customer has used the EMC VNX AVM feature to create a number of file systems. There are fourteen RAID 5 (4+1) LUNs presented to AVM as VNX disk volumes. After the file systems are complete, the customer notices that all file systems are built on one 4-element stripe set. What storage pool attribute may have caused this behavior?

  A. is_dynamic
  B. default_slice_flag
  C. is_greedy
  D. default_stack_size
  C. is_greedy

• Question 252:

  You are about to start file deduplication of a 1300 GB NFS file system that contains 7.5 million files. There is no client access to the file system during the initial scan. How long will it take for the scan and ingest to finish?

  A. 18 hours
  B. 21 minutes
  C. 2 hours
  D. 36 hours
  A. 18 hours

• Question 253:

  A vSphere ESXi v5.0 administrator receives an alert that a VM (virtual machine) has been paused. What action should they take to resume this VM's operation?

  A. Add additional storage to the thin-provisioned storage of the VM.
  B. Restart a fractured MirrorView replication session on the VM's datastore.
  C. Restore a failed network link on the ESXi server's teamed network interface adapters.
  D. Ensure that one of the VM's applications is not pinned to a failed vCPU.
  A. Add additional storage to the thin-provisioned storage of the VM.

• Question 254:

  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 FC. They have divided the available disks into two separate Storage Pools.

  They are seeing 70% CPU usage on SPA and 18% CPU usage on SPB. After investigating, you find that all LUNs in the two Storage Pools are now owned by SPA.

  How should this be explained?

  A. Block Deduplication is turned on.
  B. SPB has lost FC connectivity.
  C. SPB had a failure and LUNs have been trespassed.
  D. Symmetric Active-Active is enabled.
  A. Block Deduplication is turned on.

• Question 255:

  How many VNX arrays can be used to source replication volumes for a single RP/SE cluster using vRPAs?

  A. One
  B. Unlimited, as long as a license file is installed for each VNX
  C. Two, with no constraints
  D. Two, as long as the amount of data replicated does not exceed the amount licensed
  A. One

• Question 256:

  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?

  A. Distribute flash drives on all odd ports
  B. Distribute flash drives on all even ports
  C. Distribute flash drives evenly across all ports
  D. Distribute flash drives on all ports in a single enclosure
  C. Distribute flash drives evenly across all ports

• Question 257:

  A customer has DR solution with EMC VNX configured to use a One-to-Many replication topology for its file system environment. Their environment consists of the following: One system in the main office (Source)

  

  One system at a local DR site

  

  One system in the East coast office

  

  One system in the West coast office

  

  One system in the Canadian office

  

  Over the weekend they experienced a failure on the source system at the main office and failed over to the local DR site. On Monday, the source system was repaired and replication was restarted and reversed from local DR site to the main office. How will replication occur to the remaining sites?

  A. Once the original site is synchronized, the replication will return to the original state.
  B. The additional sites must be manually re-synchronized through the CLI or GUI.
  C. The original source site will cascade the file system updates to the remaining sites.
  D. The DR site now becomes the source for all sites including the original source.
  C. The original source site will cascade the file system updates to the remaining sites.

• Question 258:

  When creating a clone, what size must the clone be when compared to source LUN?

  A. Half the size of the source LUN
  B. Same size of the source LUN
  C. Two times larger than the source LUN
  D. Four times larger than the source LUN
  D. Four times larger than the source LUN

• Question 259:

  A customer is migrating between two VNX arrays using SAN Copy. The SAN Copy session was created on the target VNX. They need to determine the downtime window needed for host cutover. Which do you recommend?

  A. Plan for an extended downtime window and perform a full SAN Copy session.
  B. Plan for a minimal downtime window and perform an incremental SAN Copy session.
  C. Plan for no downtime and perform a full SAN Copy session.
  D. Plan for no downtime and perform an incremental SAN Copy session.
  A. Plan for an extended downtime window and perform a full SAN Copy session.

• Question 260:

  A customer recently upgraded from vSphere v4.x to vSphere v5.0 to benefit from new VMFS-5 features for their existing `DataStore1' and `DataStore2' datastores on an EMC VNX. A second identically configured VNX was implemented and the customer created two additional datastores on the new VNX.

  After monitoring the environment, the customer notices the VMs on `DataStore1' and `DataStore2' are not using the same sub-block structure as the two new datastores. What is the reason for this behavior?

  A. The old VMs are on an upgraded VMFS-5 datastore.
  B. The old VMs are still running old VMware tools.
  C. The new VMFS-5 features need to be licensed and activated.
  D. The new VMFS-5 cannot support two VNX storage systems.
  A. The old VMs are on an upgraded VMFS-5 datastore.