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Category: E20-885 (v.1)

Exam E20-885: VNX Solutions Expert Exam for Implementation Engineers (update November 4th, 2014)

What TCP ports should they ask the network team to open?

A customer wants to replicate a CIFS environment from a legacy EMC Celerra to a new EMC
VNX. Users are able to access CIFS shares from both arrays. The CIFS shares are on different
networks and replication is not running. The customer wants to make sure there will be no
network restrictions preventing replication between the data movers on two different networks.
What TCP ports should they ask the network team to open?

What is the reason for this behavior?

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?

What do you advise?

A customer requires an asynchronous DR solution for an NFS-only client environment. The
customer wants the solution to be simple to implement. It was recommended they create a single
NIS domain, and use several NIS servers to provide centralized authentication to the NFS clients
at both the source and destination sites. The customer asks you whether they should consider
using VDMs in this environment. What do you advise?

Which solution do you recommend to the customer?

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 several
deduplicated file systems shared and available to clients via CIFS.

Which solution do you recommend to the customer?


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