Question 1

A customer has a VPLEX Metro with VPLEX Witness installed and configured. The detach rule for consistency group is "no-automatic-winner". What will VPLEX Witness do in case of a Site 1 failure?
A) VPLEX Witness will have no effect.
B) VPLEX Witness will set the consistency group detach rule.
C) VPLEX Witness will suspend I/O at Site 1
D) VPLEX Witness will suspend I/O at Site 2

Accepted Answer

VPLEX Witness will have no effect because the detach rule is set to "no-automatic-winner," meaning that in the event of a site failure, the system will not automatically choose a winner site, and the Witness will not intervene.

Question 2

Which VPLEX component can determine the difference between a partition and a site failure of a VPLEX Metro configuration?
A) VPLEX Witness
B) Management Server
C) Cluster 1 Engine 1
D) Consistency Group

Accepted Answer

VPLEX Witness is a component that can differentiate between a partition and a site failure in a VPLEX Metro configuration, ensuring proper failover and data integrity.

Question 3

A new VPLEX cluster has been configured. However, you are unable to register any host initiators. After verifying that the host has been properly zoned to the VPLEX cluster, you still cannot register them. What is a possible cause?
A) Front end ports have not been enabled.
B) Back-end ports have not been enabled.
C) Back-end arrays have not presented any LUNs.
D) Storage View for host has not been created.

Accepted Answer

The answer of A new VPLEX cluster has been configured....

Question 4

What is the purpose of the I/O Module Upgrade Script?
A) To manage the I/O module change during a Metro to Geo topology upgrade.
B) To install the I/O load balancer module on the Management Server.
C) To configure the GbE I/O modules when installing VPLEX Geo.
D) To automate the installation of I/O modules and configuration of the directors.

Accepted Answer

The answer of What is the purpose of the I/O...

Question 5

You created a synchronous consistency group, which contains two distributed volumes configured with the rule "set cluster-1-detaches". What is the expected behavior of the virtual volumes in the event of a WAN-COM failure?
A) cluster-2 is declared the winner after 5 seconds and I/O will continue at that cluster.
B) I/O will continue at both clusters.
C) I/O will be suspended at both clusters until the WAN-COM is repaired.
D) cluster-1 is declared the winner after 5 seconds and I/O will continue at that cluster.

Accepted Answer

The "set cluster-1-detaches" rule specifies that cluster-1 is the preferred cluster for the virtual volumes. In the event of a WAN-COM failure, cluster-2 will be declared the winner after 5 seconds and I/O will continue at that cluster.

Question 6

Which command script must be executed when upgrading a small VPLEX to medium VPLEX?
A) VPlexadmin add-engines
B) director add
C) VPlexadmin set
D) VPlexadmin add-directors

Accepted Answer

The correct command to upgrade a small VPLEX to a medium VPLEX is "VPlexadmin add-engines," which adds additional engines to the VPLEX system.

Question 7

A customer is performing maintenance on their network that might affect their VPLEX Witness VM. What can be done to ensure there are no adverse effects due to a Witness outage?
A) Disable the cluster's management server ipsec.
B) Disable the VPLEX Witness.
C) Shut down the VPLEX Witness VM.
D) Shut down the cluster's management server.

Accepted Answer

Disabling the VPLEX Witness temporarily during maintenance ensures that the system does not mistakenly interpret the Witness outage as a failure, preventing potential disruptions in the VPLEX environment.

Question 8

What VPLEX user account is required to manage user security?
A) admin
B) service
C) root
D) user

Accepted Answer

The "admin" account is typically used for managing user security in VPLEX systems.

Question 9

Which vplexcli command will ensure that the directors SSD firmware has been upgraded to the correct version after the VPLEX NDU ?
A) director firmware show-banks
B) version -a
C) version -a --verbose
D) ll /**/internal-disks/*

Accepted Answer

The `version -a --verbose` command will display the firmware version of all the directors in the VPLEX cluster, including the SSD firmware version. This will allow you to verify that the SSD firmware has been upgraded to the correct version after the VPLEX NDU.

Question 10

A customer has a VPLEX Metro/GEO environment and is requesting that the VPLEX Witness be installed. The requirements for the Witness are: One vCPU
512MB ram
2)5GB storage space
What platform type is supported?
A) 64bit ESX4.0 and above
B) 32/64bit ESXi 5.0
C) 64bit MS Hyper-V 2012
D) VMware Workstation 9.0 and above

Accepted Answer

The VPLEX Witness is supported on 64bit ESX4.0 and above, which meets the requirements for the virtual environment needed for the VPLEX Witness installation.

Question 11

What is required of an ESX host for the Witness to be installed?
A) Promiscuous mode set to Accept
B) ESX host in Cluster 1 failure domain
C) MAC address change set to Accept
D) ESX host in Cluster 2 failure domain

Accepted Answer

The answer of What is required of an ESX host...

Question 12

You are doing a code upgrade on a VPLEX. In which directory do you put the upgrade files in order to execute the code upgrade?
A) /tmp/vfs
B) /diags/collect-diagnostics-out
C) /tmp/VPlexInstallPackages
D) /tmp/diags

Accepted Answer

The upgrade files for a VPLEX code upgrade should be placed in the /tmp/VPlexInstallPackages directory.

Question 13

During an installation, the physical equipment inspection reveals an ESX host used for VPLEX Witness is located in the same rack as VPLEX cluster 1 Engine. What needs to be done?
A) VPLEX Witness server must be in a separate cabinet in the same data center.
B) The VPLEX Witness server must be placed in a separate failure domain.
C) Decrease network delay to reduce effects of equipment proximity.
D) The ESX host must be placed in a separate cabinet due to cooling requirements.

Accepted Answer

The VPLEX Witness server must be placed in a separate failure domain to ensure high availability and fault tolerance. This prevents a single point of failure from affecting both the VPLEX cluster and the Witness server.

Question 14

You are preparing to migrate the topology of an installed VPLEX Local system. What is a supported upgrade path?
A) Local to Geo to Global
B) Local to Metro
C) Local to Global
D) Local to Metro to Geo

Accepted Answer

VPLEX Local can be upgraded to VPLEX Metro, which is a supported upgrade path.

Question 15

Which element does VPLEX Witness require?
A) Virtual Volume
B) Distributed Volume
C) Distributed Device
D) Consistency Group

Accepted Answer

The answer of Which element does VPLEX Witness require?
A) Virtual...

Question 16

You have attempted to upgrade a VPLEX system to the latest Geosynchrony code. During the upgrade, an error appeared and caused the upgrade to fail. Which file should you review to gather more information about the failure?
A) firmware.log_<date>
B) session.log
C) VPlexconfiguration-session.txt
D) ndu-pre-check-stderr.txt

Accepted Answer

The firmware.log_<date> file contains information about the upgrade process, including any errors that occurred.

Question 17

A customer is verifying the host environment before scheduling a VPLEX NDU. According to EMC best practices, which PowerPath load-balancing policy is applied by default to all platforms?
A) Adaptive
B) RoundRobin
C) LeastIO
D) StreamIO

Accepted Answer

The default PowerPath load-balancing policy applied to all platforms is RoundRobin, as it evenly distributes I/O across all available paths, optimizing performance and reliability.

Question 18

VPLEX ndu pre-check command reports a time drift between directors and the Management Server. How must the NDU be performed?
A) The NDU cannot be started. the time drift must be resolved.
B) The NDU can be started using --skip-confirmations option.
C) The NDU can be started. the time drift will be automatically fixed during upgrade.
D) The NDU must be started using the --force option.

Accepted Answer

The NDU (Non-Disruptive Upgrade) cannot be started if there is a time drift between directors and the Management Server. This issue must be resolved to ensure synchronization and prevent potential problems during the upgrade process.

Question 19

After registering Cluster-2 with ESRS during a VPLEX Metro cluster build, what is the next step to perform before the cluster is successfully built?
A) Complete EZ-Setup Wizard on Cluster-2
B) Configure WAN connections on Cluster-1
C) Complete EZ-Setup Wizard on Cluster-1
D) Configure WAN connections on Cluster-2

Accepted Answer

After registering Cluster-2 with ESRS, the next step is to complete the EZ-Setup Wizard on Cluster-1 to ensure that the initial configuration and setup are completed before proceeding with the rest of the cluster build process.

Question 20

How do you verify that the VPLEX upgrade has completed successfully?
A) Log into the VPLEX Unisphere interface.
B) Run the cluster-summary command.
C) Check that the system LED is green on each director.
D) Run the ndu pre-check command.

Accepted Answer

The answer of How do you verify that the VPLEX...

Exam 1: VPLEX Specialist for Implementation Engineers

A customer has a VPLEX Metro with VPLEX Witness installed and configured. The detach rule for consistency group is "no-automatic-winner". What will VPLEX Witness do in case of a Site 1 failure?

Which VPLEX component can determine the difference between a partition and a site failure of a VPLEX Metro configuration?

A new VPLEX cluster has been configured. However, you are unable to register any host initiators. After verifying that the host has been properly zoned to the VPLEX cluster, you still cannot register them. What is a possible cause?

What is the purpose of the I/O Module Upgrade Script?

You created a synchronous consistency group, which contains two distributed volumes configured with the rule "set cluster-1-detaches". What is the expected behavior of the virtual volumes in the event of a WAN-COM failure?

Which command script must be executed when upgrading a small VPLEX to medium VPLEX?

A customer is performing maintenance on their network that might affect their VPLEX Witness VM. What can be done to ensure there are no adverse effects due to a Witness outage?

What VPLEX user account is required to manage user security?

Which vplexcli command will ensure that the directors SSD firmware has been upgraded to the correct version after the VPLEX NDU ?

A customer has a VPLEX Metro/GEO environment and is requesting that the VPLEX Witness be installed. The requirements for the Witness are: One vCPU 512MB ram 2) 5GB storage space What platform type is supported?

What is required of an ESX host for the Witness to be installed?

You are doing a code upgrade on a VPLEX. In which directory do you put the upgrade files in order to execute the code upgrade?

During an installation, the physical equipment inspection reveals an ESX host used for VPLEX Witness is located in the same rack as VPLEX cluster 1 Engine. What needs to be done?

You are preparing to migrate the topology of an installed VPLEX Local system. What is a supported upgrade path?

Which element does VPLEX Witness require?

You have attempted to upgrade a VPLEX system to the latest Geosynchrony code. During the upgrade, an error appeared and caused the upgrade to fail. Which file should you review to gather more information about the failure?

A customer is verifying the host environment before scheduling a VPLEX NDU. According to EMC best practices, which PowerPath load-balancing policy is applied by default to all platforms?

VPLEX ndu pre-check command reports a time drift between directors and the Management Server. How must the NDU be performed?

After registering Cluster-2 with ESRS during a VPLEX Metro cluster build, what is the next step to perform before the cluster is successfully built?

How do you verify that the VPLEX upgrade has completed successfully?