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EMC Dell VPLEX Deploy Achievement Sample Questions (Q61-Q66):

NEW QUESTION # 61
What is the default subnet mask value for management server network 128.221.252.0?

A. 255.255.255.248
B. 255.255.255.192
C. 255.255.255.128
D. 255.255.255.224

Answer: A

Explanation:
The default subnet mask for a management server network, specifically for the network 128.221.252.0, is typically a subnet mask that allows for a small number of hosts, as management networks do not usually require a large number of IP addresses.
* Subnet Mask Purpose: A subnet mask is used in IP networking to divide the IP address into a network and host identifier. The default subnet mask for a particular network depends on the class and configuration of the network1.
* Management Server Network: For a management server network like 128.221.252.0, a common default subnet mask is 255.255.255.248. This subnet mask allows for up to 6 usable IP addresses, which is generally sufficient for management purposes1.
* Network Configuration: The choice of subnet mask can affect the number of hosts that can be accommodated within a network. A subnet mask of 255.255.255.248 indicates a very small network, often used for specialized network segments such as management interfaces1.
* Dell VPLEX Configuration: In the context of Dell VPLEX Deploy Achievement, the management server network would be configured with a subnet mask that supports the network architecture and design best practices as outlined in Dell's documentation1.
* Best Practices: It is important to follow the recommended settings and configurations provided in the Dell VPLEX Deploy Achievement documents to ensure proper network segmentation, security, and performance1.
In summary, the default subnet mask value for a management server network like 128.221.252.0 is typically
255.255.255.248, which aligns with the standard practices for configuring management networks in a Dell VPLEX environment.

NEW QUESTION # 62
What is a consideration when using VPLEX RecoverPoint enabled consistency groups?

A. Local copy volumes and production volumes must reside in separate consistency groups.
B. Repository volume and journal volumes must be in different consistency groups.
C. Production and local copy journals must be in different consistency groups.
D. Local virtual volumes and distributed virtual volumes can be in the same consistency group.

Answer: A

Explanation:
When using VPLEX with RecoverPoint enabled consistency groups, it is important to ensure that local copy volumes and production volumes are placed in separate consistency groups. This separation is crucial for maintaining the integrity of the data replication and recovery processes.
* Consistency Group Configuration: Consistency groups in VPLEX are logical groupings of virtual volumes that VPLEX treats as a single unit for operations such as data mobility and recovery. When RecoverPoint is enabled, these groups also align with RecoverPoint consistency groups for replication purposes1.
* Separation of Volumes: Keeping local copy volumes (volumes used for local replication) and production volumes (active volumes serving data to hosts) in separate consistency groups helps to prevent any potential conflicts or issues with replication and ensures that the local copies are consistent and usable for recovery1.
* RecoverPoint Replication: RecoverPoint provides continuous data protection and replication for recovery to any point in time. The separation of volumes into different consistency groups helps to manage and maintain the replication process effectively1.
* Operational Management: By separating these volumes into different consistency groups, administrators can manage operations such as replication, failover, and recovery with greater precision and control1.
* Best Practices: This separation is part of the best practices recommended by Dell EMC when configuring VPLEX with RecoverPoint, ensuring that the system operates efficiently and that data is protected in case of any failures1.
In summary, when using VPLEX with RecoverPoint enabled consistency groups, local copy volumes and production volumes must be placed in separate consistency groups to ensure proper replication and recovery processes.

NEW QUESTION # 63
You are troubleshooting performance issues on a Microsoft SQL Server application hosted on a VPLEX virtual volume. You discover the volume is involved in a data mobility job with a transfer rate of 32 MB. It has been recommended to change this setting.
Which transfer rate will help improve the performance of the Microsoft SQL Server application?

A. 68 MB
B. 60 MB
C. 120 MB
D. 128 KB

Answer: C

Explanation:
When troubleshooting performance issues on a Microsoft SQL Server application hosted on a VPLEX virtual volume, adjusting the data mobility job transfer rate can have a significant impact on the application's performance. A higher transfer rate can help improve performance by allowing data to be moved more quickly, reducing the impact on the application's I/O operations.
* Assessing Current Performance: The current transfer rate of 32 MB may be insufficient for the workload of the SQL Server application, leading to performance issues1.
* Recommended Transfer Rate: Increasing the transfer rate to 120 MB can help alleviate these performance issues by accelerating the data mobility process, thus minimizing the time during which the SQL Server application's performance is impacted1.
* Implementing the Change: To change the transfer rate, the administrator would use the VPLEX CLI to adjust the settings for the data mobility jB. This involves modifying the transfer rate parameter to the new value of 120 MB1.
* Monitoring the Impact: After making the change, it's important to monitor the SQL Server application's performance to ensure that the new transfer rate is having the desired effect and not causing any additional issues1.
* Best Practices: It is recommended to follow best practices for data mobility and performance tuning as outlined in the Dell VPLEX documentation, which includes considering the impact of data mobility jobs on application performance1.
In summary, changing the data mobility job transfer rate to 120 MB is recommended to help improve the performance of the Microsoft SQL Server application hosted on a VPLEX virtual volume.

NEW QUESTION # 64
A company has a VPLEX Metro installed. They would like to perform data mobility between clusters.
Which feature should they use?

A. Storage volume mobility
B. Device mobility
C. Extent mobility
D. Virtual volume mobility

Answer: B

Explanation:
For a company with a VPLEX Metro installation that wants to perform data mobility between clusters, the feature they should use is device mobility. This feature allows for the seamless movement of data across storage arrays without host disruption, ensuring uptime for business-critical applications1.
* Device Mobility: Device mobility is the process of moving a virtualized storage device from one storage array to another within the VPLEX Metro environment. This is done without affecting the hosts' access to the data1.
* Seamless Data Movement: The unique implementation of distributed cache coherency in VPLEX allows the same data to be read/write accessible across two storage systems simultaneously, facilitating seamless data mobility1.
* Non-Disruptive: One of the key advantages of using device mobility in VPLEX Metro is that it is non-disruptive. Hosts can continue to operate without any interruption while the data is being moved between clusters1.
* Use Cases: Device mobility is particularly useful in scenarios such as tech refreshes, cloud mobility, consolidation, relocation, and more, where data needs to be moved without affecting the ongoing operations1.
* Procedure: To initiate device mobility, the administrator would use the VPLEX CLI to execute commands that orchestrate the movement of the virtualized storage devices between the clusters1.
In summary, device mobility is the recommended feature for a company with VPLEX Metro to perform data mobility between clusters, providing a robust and efficient way to move data without disrupting host access.

NEW QUESTION # 65
A database administrator would like to have access to the diagnostic files from the shell, but has no shell access. How can they gain access to the files?

A. Copy the files using SCP
B. Cannot access the file system without admin credentials
C. Cannot access the file system without service credentials
D. Use access to root directory of the management server

Answer: A

Explanation:
For a database administrator who needs access to diagnostic files from the VPLEX system but does not have shell access, the recommended method is to use Secure Copy Protocol (SCP) to copy the files. SCP is a secure file transfer protocol that allows files to be copied over a network.
* Access the Management Server: First, the administrator must access the VPLEX management server for the cluster from which they need to collect the logs1.
* SSH to the Director: Using SSH, the administrator logs in as root to the director from which the logs need to be collected1.
* Navigate to Log Directory: Change the directory to /var/log on the director to access the log files1.
* Create a Tarball of Logs: Use the tar command to create a compressed archive (tarball) of the log files1.
* Copy the Tarball Using SCP: Use SCP to copy the tarball to the management server's /tmp directory.
The administrator will be prompted for the service account password before the file can be transferred1.
* Access the Files: Once the files are on the management server, the database administrator can download them from the /tmp directory using SCP from their workstation1.
This process allows the database administrator to obtain the necessary diagnostic files without having direct shell access to the VPLEX system.

NEW QUESTION # 66
......

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