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EMC Dell VPLEX Operate Achievement Sample Questions (Q22-Q27):

NEW QUESTION # 22
A service provider has implemented a VPLEX Metro cluster without VPLEX Witness and has implemented a static rule set. The static rule set has been set to "cluster-2 detaches". A Microsoft Windows host in the Cluster-1 data center uses a distributed volume. However, the WAN COM fails.
What is the result of this failure?

A. 1. VPLEX suspends I/O to all distributed devices on both clusters
2. VPLEX starts a delay timer
3. If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-2 and keep I/O suspended on Cluster-1
B. 1. VPLEX starts a delay timer
2. VPLEX suspends I/O to all distributed devices on both clusters
3. If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-2 and keeps I/O suspended on Cluster-1
C. 1. VPLEX starts a delay timer
2. VPLEX suspends I/O to all distributed devices on both clusters
3. If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-1 and keeps I/O suspended on Cluster-2
D. 1. VPLEX suspends I/O to all distributed devices on both clusters
2. VPLEX starts a delay timer
3. If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-1 and keeps I/O suspended on Cluster-2

Answer: B

Explanation:
In a VPLEX Metro cluster without a VPLEX Witness and with a static rule set to "cluster-2 detaches", the result of a WAN COM failure would be as follows:
* Delay Timer: Initially, VPLEX starts a delay timer upon detecting the WAN COM failure.This timer allows for a temporary network issue to be resolved without immediate impact on I/O operations1.
* Suspension of I/O: While the delay timer is active, VPLEX suspends I/O to all distributed devices on both clusters to prevent data corruption and ensure data integrity1.
* Resumption of I/O: If the WAN COM connectivity is not restored within the expiration period of the delay timer, VPLEX will resume I/O operations on Cluster-2, as per the static rule set.I/O will remain suspended on Cluster-1 to maintain a consistent data state and prevent a split-brain scenario1.
This process ensures that data remains consistent and available on at least one cluster in the event of a WAN COM failure, aligning with the predefined static rule set and maintaining the integrity of the VPLEX Metro cluster operations.

NEW QUESTION # 23
LUNs are being provisioned from an ALUA-capable back-end array to VPLEX. What is the path requirement for each VPLEX director when connecting to this type of array?

A. At least two paths to both the active and passive array controllers
B. At least two paths to both the active and non-preferred array controllers
C. At least two paths to the active array controller only
D. At least two paths to every back-end array and storage volume

Answer: B

Explanation:
When provisioning LUNs from an ALUA-capable back-end array to VPLEX, it is required that each VPLEX director has at least two paths to both the active and non-preferred array controllers. This ensures redundancy and continuous availability of data even if one path or controller fails.
* ALUA-Capable Arrays: ALUA (Asymmetric Logical Unit Access) arrays present active and non-preferred (or passive) paths to the storage.The active paths are used for I/O under normal operations, while non-preferred paths are available for use if the active paths fail1.
* Path Requirements: For each VPLEX director, there should be at least two paths to the active controller and at least two paths to the non-preferred controller.This configuration provides redundancy and supports the ALUA functionality1.
* VPLEX Director Connectivity: VPLEX directors manage the paths to the storage arrays.Having multiple paths from each director ensures that VPLEX can continue to provide access to the LUNs even if there are issues with one of the paths or controllers1.
* Redundancy and Availability: The path requirement is crucial for maintaining high availability and redundancy, which are key benefits of using VPLEX in conjunction with ALUA-capable arrays1.
* Best Practices: Following this best practice for path connectivity aligns with VPLEX's goal of providing continuous data availability and seamless failover capabilities in the event of hardware failures or maintenance activities1.
By adhering to the path requirement of having at least two paths to both the active and non-preferred array controllers, VPLEX can leverage the ALUA functionality of the back-end array to ensure optimal performance and data availability.

NEW QUESTION # 24
VPLEX Metro has been added to an existing HP OpenView network monitoring environment. The VPLEX SNMP agent and other integration information have been added to assist in the implementation. After VPLEX is added to SNMP monitoring, only the remote VPLEX cluster is reporting performance statistics.
What is the cause of this issue?

A. HP OpenView is running SNMP version 2C, which may cause reporting that does not contain the performance statistics.
B. TCP Port 443 is blocked at the local site's firewall.
C. Local VPLEX cluster management server has a misconfigured SNMP agent.
D. Local VPLEX Witness has a misconfigured SNMP agent.

Answer: C

Explanation:
When only the remote VPLEX cluster is reporting performance statistics in an HP OpenView network monitoring environment, the cause is likely due to a misconfiguration of the SNMP agent on the local VPLEX cluster management server. Here's a detailed explanation:
* SNMP Agent Role: The SNMP (Simple Network Management Protocol) agent is responsible for collecting and sending performance statistics from the VPLEX cluster to the monitoring system1.
* Misconfiguration Symptoms: If the SNMP agent is misconfigured on the local VPLEX cluster management server, it may fail to collect or send the correct performance data, resulting in missing statistics in the monitoring system1.
* Troubleshooting Steps: To resolve this issue, the VPLEX administrator should verify the SNMP configuration on the local VPLEX cluster management server.This includes checking the community strings, SNMP version, and target IP addresses for the monitoring system1.
* Correct Configuration: Ensuring that the SNMP agent is correctly configured on the local VPLEX cluster management server will allow it to report performance statistics accurately to the HP OpenView network monitoring environment1.
* Monitoring Continuity: Proper configuration of the SNMP agent is crucial for continuous and comprehensive monitoring of the VPLEX environment, which is essential for maintaining system performance and availability1.
By addressing the misconfiguration of the SNMP agent on the local VPLEX cluster management server, the service provider can restore full monitoring capabilities and ensure that both local and remote VPLEX clusters report performance statistics as expected.

NEW QUESTION # 25
What are the two common use cases of the VPLEX Mobility feature?

A. Tech Refresh
Workload Rebalance
B. Workflow Automation
Tech Refresh
C. Workload Rebalance
Deduplication
D. NDU upgrades
Continuous Data Protection

Answer: A

Explanation:
The VPLEX Mobility feature is designed to address several use cases, but two of the most common ones are:
* Tech Refresh: This involves the migration of data from older storage arrays to newer ones without disrupting access to the data.VPLEX Mobility facilitates this process by allowing data to be moved seamlessly between different storage systems, which is essential during technology upgrades1.
* Workload Rebalance: This use case involves the dynamic movement of workloads across different storage systems to balance performance and capacity needs.VPLEX Mobility enables administrators to shift data to the most appropriate storage resources as demands change, ensuring optimal performance and utilization1.
References:
* VPLEX Mobility: The VPLEX Mobility feature is a key component of the VPLEX system, providing the ability to move data across different storage installations within the same data center, across a campus, or within a geographical region1.
* Tech Refresh: The technology refresh use case is particularly important for organizations that need to update their storage infrastructure without causing downtime or affecting ongoing operations.VPLEX Mobility allows for such updates to happen in the background, with no impact on users or applications1.
* Workload Rebalance: Workload rebalance is crucial for maintaining performance levels across storage systems, especially in environments where workloads can be unpredictable or where there are periodic spikes in demand.VPLEX Mobility's ability to move data dynamically helps in managing these scenarios effectively1.
For more detailed information on VPLEX Mobility and its use cases, you can refer to the official Dell documentation on VPLEX Overview and General Best Practices1.

NEW QUESTION # 26
What is a consideration when using VPLEX RecoverPoint enabled consistency groups?

A. Repository volume and journal volumes must be in different consistency groups.
B. Local copy volumes and production volumes must reside in separate 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: C

Explanation:
When using VPLEX with RecoverPoint enabled consistency groups, it's important to consider how journals are managed:
* Production Journals: These are used by the production volumes for logging write I/Os before they are replicated to the remote site or local copy.
* Local Copy Journals: These are used by the local copy volumes for the same purpose as production journals but are specific to the local copies.
* Separation of Journals: To ensure proper replication and recovery processes, production and local copy journals must be kept in separate consistency groups.This separation is crucial for maintaining the
* integrity of the replication and avoiding conflicts between production and local copy operations1.
* RecoverPoint Configuration: In a VPLEX environment, RecoverPoint provides continuous data protection and replication.It is configured to work with VPLEX consistency groups to ensure that all writes are captured and can be recovered in case of a failure1.
* Best Practices: Dell's best practices for VPLEX RecoverPoint configurations recommend this separation of journals to ensure that the system can handle failover scenarios correctly and that data is not lost or corrupted1.
By following this consideration, storage administrators can ensure that their VPLEX RecoverPoint environment is configured for optimal data protection and disaster recovery readiness.

NEW QUESTION # 27
......

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D-VPX-OE-A-24 Authentic Exam Questions - D-VPX-OE-A-24 Valid Test Duration

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