RELIABLE D-VPX-OE-A-24 DUMPS PDF - D-VPX-OE-A-24 INTERACTIVE QUESTIONS

Reliable D-VPX-OE-A-24 Dumps Pdf - D-VPX-OE-A-24 Interactive Questions

Reliable D-VPX-OE-A-24 Dumps Pdf - D-VPX-OE-A-24 Interactive Questions

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EMC Dell VPLEX Operate Achievement Sample Questions (Q20-Q25):

NEW QUESTION # 20
Which method of virtual volume expansion requires the volume to be expanded on the array first?

  • A. Extent expansion
  • B. Concatenation
  • C. RAID-C expansion
  • D. Storage volume

Answer: D

Explanation:
The method of virtual volume expansion that requires the volume to be expanded on the array first is the storage volume expansion methD.This method involves increasing the size of the physical storage volume on the array before expanding the virtual volume in VPLEX.
* Array Expansion: The first step is to expand the physical storage volume on the array.This is typically done through the array's management interface and involves adding more storage or extending the existing volume1.
* VPLEX Recognition: Once the storage volume is expanded on the array, VPLEX must recognize the new size of the volume.This may require a rescan or refresh within the VPLEX management interface1.
* Virtual Volume Expansion: After VPLEX recognizes the new size of the storage volume, the virtual volume can then be expanded to utilize the additional space.This is done within the VPLEX management interface, where the virtual volume is configured to include the additional capacity1.
* Storage Volume Method: The storage volume expansion method is distinct from other methods like concatenation, extent expansion, or RAID-C expansion, which involve different approaches to increasing virtual volume size within VPLEX itself1.
By expanding the storage volume on the array first, administrators can ensure that the additional capacity is available for use by VPLEX, allowing for the seamless expansion of virtual volumes to accommodate growing data needs.


NEW QUESTION # 21
In preparing a host to access its storage from VPLEX, what is considered a best practice when zoning?

  • A. Dual fabrics should be merged into a single fabric to ensure all zones are in a singlezoneset.
  • B. Each host should have either one path to an A director or one path to a B director on each fabric, for a minimum of two logical paths.
  • C. Ports on host HBA should be zoned to either an A director or a B director.
  • D. Each host should have at least one path to an A director and at least one path to a B director on each fabric, for a total of four logical paths.

Answer: D

Explanation:
When preparing a host to access its storage from VPLEX, the best practice for zoning is to ensure that each host has at least one path to an A director and at least one path to a B director on each fabric. This setup provides redundancy and ensures continuous availability of data even if one path or director fails.
* Redundant Paths: By having at least one path to an A director and one path to a B director, the host can maintain access to its storage even if one of the directors or paths becomes unavailable1.
* Fabric Configuration: The use of dual fabrics provides an additional layer of redundancy.Each fabric acts as an independent network, and having paths on both fabrics ensures that the host can still access storage if one fabric experiences issues1.
* Logical Paths: The total of four logical paths (two paths per fabric) allows for load balancing and failover capabilities.This configuration is crucial for environments that require high availability and resilience1.
* Zoning Best Practices: Proper zoning practices are essential for maintaining a secure and efficient storage network.The recommended zoning configuration helps to isolate traffic and prevent disruptions1.
* VPLEX Configuration: In a VPLEX environment, it is important to follow the recommended zoning practices to take full advantage of the system's capabilities for data mobility and continuous availability1.
By following this zoning best practice, administrators can ensure that the host has reliable and resilient access to its storage volumes through the VPLEX system.


NEW QUESTION # 22
LUNs belonging to an ESXi cluster were encapsulated behind VPLEX. What information must be shared with the ESXi administrator so that they can re-discover the datastore and the RDM LUNs?

  • A. Virtual volume VPD
  • B. VML ID
  • C. WWN:WWPN
  • D. UUID of back-end LUN

Answer: A

Explanation:
When LUNs belonging to an ESXi cluster are encapsulated behind VPLEX, the information that must be shared with the ESXi administrator for them to re-discover the datastore and the RDM LUNs is the Virtual Volume VPD (Vital Product Data).
* Virtual Volume VPD: The VPD for a virtual volume contains essential information about the volume, such as its identifier, which is used by the ESXi host to recognize and differentiate the volume1.
* Re-Discovery Process: After encapsulation, the ESXi administrator will need to perform a rescan of the storage adapters on the ESXi hosts.During this rescan, the hosts use the VPD information to identify the newly encapsulated LUNs and re-discover the associated datastore and RDM LUNs1.
* Datastore and RDM LUNs: Datastores are storage containers that hold virtual machine files, while RDM (Raw Device Mapping) LUNs allow a virtual machine to directly access a storage device.Both rely on unique identifiers to ensure correct access and operation within the ESXi environment1.
* Sharing Information: The VPLEX administrator should provide the VPD information to the ESXi administrator, typically after the encapsulation process is complete and before the ESXi storage rescan is initiated1.
* Ensuring Access: By sharing the correct VPD information, the ESXi administrator can ensure that the ESXi cluster correctly identifies and regains access to the encapsulated LUNs, maintaining the continuity of services and data availability1.
The sharing of the Virtual Volume VPD is a critical step in the process of LUN encapsulation behind VPLEX, ensuring that the ESXi cluster can successfully re-discover and utilize the datastore and RDM LUNs.


NEW QUESTION # 23
Which command collects the most recent performance statistics from all VPLEX directors?

  • A. monitor collect
  • B. SNMPGET
  • C. monitor stat-list
  • D. SNMPGETBULK

Answer: D

Explanation:
The command that collects the most recent performance statistics from all VPLEX directors is SNMPGETBULK. This command is part of the SNMP (Simple Network Management Protocol) suite, which is used for collecting information and managing network devices.
* SNMPGETBULK Command: The SNMPGETBULK command retrieves bulk data from SNMP-enabled devices.It is designed to efficiently collect multiple pieces of information in a single request, making it suitable for gathering performance statistics from multiple directors1.
* Usage in VPLEX: In the context of Dell VPLEX, the SNMPGETBULK command can be used to query the directors for their most recent performance data. This data can include metrics such as I/O rates, latency, cache usage, and other vital statistics.
* Performance Monitoring: Collecting performance statistics is crucial for monitoring the health and efficiency of the VPLEX system. It helps administrators identify potential issues and optimize the system's performance.
* SNMP Configuration: To use the SNMPGETBULK command, SNMP must be configured on the VPLEX system, and the appropriate community strings and access permissions must be set up.
* Other Commands: While the monitor stat-list command lists available statistics and the monitor collect command collects performance data for a specific monitor, the SNMPGETBULK command is specifically used for bulk data retrieval across all directors.
By utilizing the SNMPGETBULK command, administrators can effectively gather comprehensive performance data from all VPLEX directors, aiding in the management and optimization of the storage environment.


NEW QUESTION # 24
Which data mobility operation removes the pointer to the source leg of a RAID-1 device?

  • A. Start
  • B. Clean
  • C. Commit
  • D. Remove

Answer: B

Explanation:
The data mobility operation that removes the pointer to the source leg of a RAID-1 device in Dell VPLEX is the "Clean" operation. This operation is part of the data mobility process in VPLEX, which involves migrating data from one storage volume to another.
* Data Mobility: Data mobility in VPLEX allows for the non-disruptive movement of data between storage volumes, which is often used for technology refreshes, load balancing, or other maintenance activities1.
* RAID-1 Device: A RAID-1 device in VPLEX is a virtual volume that provides data redundancy by mirroring data across two storage volumes, known as legs1.
* Clean Operation: The "Clean" operation is used after the data has been successfully migrated to the new storage volume (target leg).It removes the pointer from the old storage volume (source leg), effectively completing the migration process1.
* Pointer Removal: Removing the pointer to the source leg is an important step to ensure that the VPLEX system no longer references the old storage volume for read or write operations, and all I/O is
* directed to the new volume1.
* Finalization: Once the "Clean" operation is performed, the source leg can be safely decommissioned or repurposed, as it is no longer part of the RAID-1 device configuration1.
By using the "Clean" operation, administrators can ensure that the data mobility process is completed efficiently and that the VPLEX system maintains data integrity and continuity of service.


NEW QUESTION # 25
......

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