EMC E20-880 Exam Questions & Answers

A customer would like to use five Ethernet ports on a VNX to increase the port and switch availability. Two non-stackable Ethernet switches are available for the VNX and both support Full Duplex communications. How should the customer configure the VNX for the network?

A. Fail Safe Networking and Link Aggregation

B. Link Aggregation only

C. EtherChannel and Fail Safe Networking

D. EtherChannel only

A customer has a mix of Windows 2003 and Windows 2008 virtualized guests deployed in their vSphere v4 environment. They have purchased a new VNX array and are also upgrading their ESX servers from V4.0 to V5.0.

Their VMware administrators are creating the new target LUNs and VMFS file systems for their datastores. They have noticed that the alignment offset on the new array is not the same as their old array, so they are concerned about disk

crossing on the new array.

How would you respond to the customer?

A. The offset for VMFS-5 is now 1 MiB and will not affect performance of any of the VMs.

B. The offset for VMFS-3 is now 1 MiB and will not affect performance of any of the VMs.

C. The alignment of all VMs will need to be manually adjusted.

D. Windows 2003 VMs will need to be manually adjusted, but Windows 2008 VMs will not be affected.

A customer has recently migrated an application from one VNX to another via EMCopy migration. The VNX's hardware is completely identical but they have been experiencing performance issues on the new machine. Their workload primarily consists of small random read access to their file system.

What could be the cause of this?

A. prefetch is enabled on the file system

B. uncached writes are not enabled on the file system

C. noscan is enabled on the file system

D. nolock is enabled on the file system