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

NEW QUESTION # 29
Which statement applies to a VPLEX device?

A. Storage presented to one or more hosts
B. An extent from a claimed LUN
C. Application of a RAID topology to one or more extents
D. Claimed LUN from an array

Answer: C

Explanation:
A VPLEX device is a logical construct that represents storage in the VPLEX environment. The statement that applies to a VPLEX device is:
* Application of a RAID Topology: A VPLEX device can have a RAID topology applied to one or more extents.This means that the VPLEX system can take multiple extents, which are segments of storage from an underlying array, and organize them into a RAID configuration for redundancy and performance purposes1.
* Extent Definition: An extent in VPLEX is a contiguous range of block addresses presented to VPLEX from a storage volume.It is the basic unit of storage that VPLEX manages1.
* Device Composition: A VPLEX device is composed of one or more extents.When these extents are combined and a RAID topology is applied, it creates a VPLEX device that can be presented as a virtual volume to hosts1.
* RAID Topologies: VPLEX supports various RAID configurations, such as RAID-1 (mirroring) and RAID-C (concatenation), allowing for flexibility in how data is protected and accessed1.
* VPLEX Virtualization: The VPLEX system virtualizes the storage from underlying arrays, allowing for the creation of these devices without being tied to the physical RAID configurations of the arrays themselves1.
By understanding the role of RAID topologies and extents in the creation of VPLEX devices, storage administrators can effectively manage and provision storage in a VPLEX environment.

NEW QUESTION # 30
What is a key VPLEX component that enables an active-active data center?

A. Distributed virtual volumes
B. Distributed storage views
C. Distributed extents
D. Distributed storage volumes

Answer: A

Explanation:
Distributed virtual volumes are a key component of Dell VPLEX that enable active-active data center configurations. Here's how they contribute to this capability:
* Active-Active Data Centers: In an active-active data center setup, both data centers are actively running workloads and can take over for each other in case of a failure.This configuration requires a storage solution that can provide simultaneous access to the same data from multiple locations1.
* Distributed Virtual Volumes: VPLEX creates distributed virtual volumes that span across two geographically separated clusters.These volumes can be accessed and written to simultaneously from both locations, which is essential for maintaining operations in an active-active environment1.
* Cache Coherence: VPLEX uses a cache coherence algorithm to ensure that write operations are synchronized across both sites.This means that when data is written to a distributed virtual volume, it is updated in both locations at the same time, ensuring consistency1.
* Application Support: Distributed virtual volumes support mission-critical applications that require high availability and continuous operations, such as Oracle RAC, by allowing them to operate in an active-active manner across data centers1.
* VPLEX Metro: The VPLEX Metro product supports active-active data centers by allowing applications to simultaneously read and write on both sites, which increases resource utilization and provides infrastructure that is actively used rather than remaining idle2.
By leveraging distributed virtual volumes, VPLEX enables organizations to create highly available, geographically distributed virtual data centers that support continuous data access and mobility.

NEW QUESTION # 31
Which method of virtual volume expansion requires the volume to be expanded on the array first?

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

Answer: B

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 # 32
What is the maximum number of synchronous consistency groups supported by VPLEX?

A. 0
B. 1
C. 2
D. 3

Answer: A

NEW QUESTION # 33
What is a consideration when using VPLEX RecoverPoint enabled consistency groups?

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

Answer: B

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 # 34
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