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EMC Dell VPLEX Deploy Achievement Sample Questions (Q29-Q34):

NEW QUESTION # 29
Which command can be used to create a distributed device from specified local devices?

A. ds dd create
B. virtual-volume create
C. storage-tool compose
D. storage-volume compose

Answer: A

NEW QUESTION # 30
When are the front-end ports enabled during a VPLEX installation?

A. After creating the metadata volumes and backup
B. Before creating the metadata volumes and backup
C. Before launching the VPLEX EZ-Setup wizard
D. After exposing the storage to the hosts

Answer: A

Explanation:
During a VPLEX installation, the front-end ports are enabled after the metadata volumes and backup have been created. This sequence ensures that the system's metadata, which is crucial for the operation of VPLEX, is secured before the storage is exposed to the hosts.
* Metadata Volumes Creation: The first step in the VPLEX installation process involves creating
* metadata volumes. These volumes store configuration and operational data necessary for VPLEX to manage the virtualized storage environment1.
* Metadata Backup: After the metadata volumes are created, it is essential to back up this data. The backup serves as a safeguard against data loss and is a critical step before enabling the front-end ports1.
* Enabling Front-End Ports: Once the metadata is secured, the front-end ports can be enabled. These ports are used for host connectivity, allowing hosts to access the virtual volumes presented by VPLEX1.
* Exposing Storage to Hosts: With the front-end ports enabled, the storage can then be exposed to the hosts. This step involves presenting the virtual volumes to the hosts through the front-end ports1.
* Final Configuration: The final configuration steps may include zoning, LUN masking, and setting up host access to the VPLEX virtual volumes. These steps are completed after the front-end ports are enabled and the storage is exposed1.
In summary, the front-end ports are enabled during a VPLEX installation after the metadata volumes and backup have been created, which is reflected in option D. This ensures that the system metadata is protected and available before the storage is made accessible to the hosts.

NEW QUESTION # 31
A storage administrator has just been informed by their network team that a WAN outage has been restored.
How can the administrator verify that their VPLEX Metro WAN COM link is restored?

A. Run cluster summary
Verify that each cluster is listed under island 1
B. Run 11 /engines/ ** /sfps
Verify that all ports have good Rx and Tx power levels
C. Run connectivity validate-local-com
Verify that all expected connectivity is present
D. Run vpn status
Verify that the peer IP is reachable

Answer: C

Explanation:
To verify that the VPLEX Metro WAN COM link is restored, the storage administrator should run the connectivity validate-local-com command. This command checks the connectivity status of the local communication links within the VPLEX cluster.
* Command Execution: The administrator should access the VPLEX CLI and execute the connectivity validate-local-com command. This will initiate a check of the local COM ports' connectivity status1.
* Interpreting Results: After running the command, the administrator should review the output to verify that all expected connectivity is present. The output will indicate whether each local COM port is communicating as expected1.
* WAN COM Link: The WAN COM link is responsible for the communication between VPLEX clusters over a wide area network. Ensuring that the local COM links are operational is a prerequisite for the WAN COM link to function properly1.
* Post-Outage Verification: Following a WAN outage, it's crucial to confirm that the communication links are fully operational to maintain the high availability and data mobility features of VPLEX Metro1.
* Best Practices: It is recommended to follow the Dell EMC VPLEX best practices for post-outage recovery, which include running the connectivity validate-local-com command to ensure that the system is ready to resume normal operations1.
In summary, the connectivity validate-local-com command is the correct procedure to verify that the VPLEX Metro WAN COM link is restored, as it checks and confirms the presence of all expected local communication link connectivity within the VPLEX cluster.

NEW QUESTION # 32
During a VPLEX Metro cluster setup, a storage administrator deploys VPLEX Witness and notices that the commands are responding slowly. The administrator wants to determine if there are any network latency or routing issues between VPLEX Cluster Witness and the VPLEX directors.
Which command will enable the administrator to see if there is an issue that needs further investigation?

A. vpn status
B. director tracepath
C. ping
D. director ping

Answer: A

Explanation:
When a storage administrator notices slow command responses after deploying VPLEX Witness and wants to investigate potential network latency or routing issues between the VPLEX Cluster Witness and the VPLEX directors, the vpn status command is used. This command checks the status of the VPN tunnels that facilitate secure communication between the management servers and the Cluster Witness Server.
* Command Execution: The administrator should execute the vpn status command in the VPLEX CLI.
This command will provide information about the state of the VPN tunnels1.
* Interpreting Results: The output from the vpn status command will indicate whether the IPsec VPN tunnels are up and if the remote management servers are reachable. It will show the status of connectivity with both the management servers and the Cluster Witness Server1.
* VPN Tunnel Status: The command will show the status of the VPN tunnel between the management servers, which is crucial for the clusters to communicate and operate as a metro system1.
* Cluster Witness Server Connectivity: Additionally, the command will verify the VPN status between the management server and the Cluster Witness Server, ensuring that the witness can monitor the health and status of the clusters1.
* Troubleshooting: If the vpn status command indicates that the remote management IP is not reachable, further troubleshooting will be required to establish connectivity. This may involve checking network configurations, firewall settings, and ensuring that the VPN services are running properly1.
In summary, the vpn status command is used to determine if there is an issue with network latency or routing that needs further investigation, providing a quick and effective way to verify management connectivity between VPLEX clusters after deploying VPLEX Witness.

NEW QUESTION # 33
Which consistency group configuration option must be set to ensure that a consistency group will continue synchronization without manual intervention once the link is restored after a link outage?

A. rule-set-name = cluster-1-detaches
B. auto-resume = true
C. rebuild-allowed = true
D. rebuild-type = full

Answer: B

Explanation:
To ensure that a consistency group will continue synchronization without manual intervention once the link is restored after a link outage, the configuration option that must be set is auto-resume = true.
* Consistency Group Configuration: A consistency group in Dell VPLEX is a collection of virtual volumes that are managed together to maintain write-order fidelity. This is crucial for applications that require all writes across multiple volumes to be consistent with each other1.
* Link Outage Handling: In the event of a link outage, it is important for the consistency group to be able to automatically resume synchronization once the link is restored. This minimizes the manual intervention required and ensures data integrity is maintained1.
* Auto-resume Option: The auto-resume = true setting is used to configure the consistency group to automatically resume synchronization. This setting is part of the consistency group's attributes and can be configured via the VPLEX CLI or Unisphere for VPLEX1.
* Implementation: To set this option, the administrator would use the VPLEX CLI to navigate to the consistency group settings and modify the auto-resume attribute to true. This ensures that the consistency group will automatically attempt to resume synchronization after a link outage is resolved1.
* Best Practices: It is recommended to enable auto-resume for all consistency groups that require high availability and automatic recovery from link outages. This setting is part of the best practices for VPLEX consistency groups as outlined in the Dell VPLEX Deploy Achievement documents1.
In summary, the auto-resume = true configuration option is essential for ensuring that a VPLEX consistency group will continue synchronization without manual intervention after a link outage, thereby maintaining the high availability and data protection standards set by Dell VPLEX Deploy Achievement guidelines.

NEW QUESTION # 34
......

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