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EMC Dell XtremIO Operate Achievement Sample Questions (Q52-Q57):

NEW QUESTION # 52
A systems administrator is responsible for the operations of 20 XtremlO X1 clusters; each are using a standalone XMS server. The administrator wants to consolidatemanagement operations to the minimum number of XMS servers as possible.
What is the smallest number of XMS servers that can support the environment?

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

Answer: C

Explanation:
* A single XtremIO Management Server (XMS) can manage up to 8 X-Brick clusters.
* For 20 XtremIO X1 clusters, the smallest number of XMS servers required to support the environment is
4.
* Consolidating management operations to the minimum number of XMS servers helps in simplifying
* administration and monitoring tasks.
References:
* Dell XtremIO XMS Configuration Guide
* XtremIO Cluster Management Documentation

NEW QUESTION # 53
What is the purpose of Microsoft VSS integration with XtremlO?

A. Allow third-party management of volume operations
B. Compress files before presenting to LUNs
C. Reclaim space from deleted volumes
D. Directly transfer data between storage devices

Answer: A

Explanation:
* The purpose of Microsoft VSS (Volume Shadow Copy Service) integration with XtremIO is to allow third-party management of volume operations.
* VSS provides a framework that enables applications to create consistent snapshots, backups, and restores of data without disrupting operations.
* This integration is essential for ensuring data integrity and consistency during backup and restore operations.
References:
* Dell XtremIO VSS Integration Guide
* Microsoft VSS Documentation

NEW QUESTION # 54
In the XtremIO X1 web interface dashboard, how is the Compression ratio calculated?

A. Logical Space in Use divided by Physical Space Used
B. Volume Capacity divided by Physical Space Used
C. Logical Space in Use divided by Unique Data
D. Unique Data divided by Physical Space Used

Answer: A

Explanation:
The Compression ratio in the XtremIO X1 web interface dashboard is calculated by dividing theLogical Space in Useby thePhysical Space Used. This ratio provides an indication of the data reduction achieved through compression by comparing the amount of logical data (the size of data before compression) to the actual physical space it occupies after compression.
* Logical Space in Use: This represents the total size of the data as it would appear without any compression. It's the amount of space the data would consume if it were stored uncompressed.
* Physical Space Used: This is the actual amount of storage space used on the SSDs after the data has been compressed. It reflects the efficiency of the compression algorithm in reducing the size of the data.
* Compression Ratio Calculation: The compression ratio is obtained by dividing the Logical Space in Use by the Physical Space Used. A higher ratio indicates more effective compression, meaning that the data occupies significantly less physical space compared to its original size.
The compression ratio is a critical metric in storage systems as it directly impacts the total effective capacity of the array.In the context of XtremIO, which is known for its data reduction technologies, monitoring the compression ratio helps in understanding the efficiency of storage utilization and planning for capacity1.
Please note that while I can provide general information on how compression ratios are typically calculated in storage systems, for the verified answer as per the Official Dell XtremIO Operate Achievement documents, you would need to consult the document directly or seek information from a Dell-certified professional who has access to the latest materials and training.

NEW QUESTION # 55
Which two successors are created when an XtremlO snapshot is taken of a production volume?

A. Primary and Secondary
B. Copy-1 and Copy-2
C. S1 and S2
D. Pand S

Answer: C

Explanation:
* When an XtremIO snapshot is taken of a production volume, it creates two snapshot entities.
* These snapshots are identified as S1 and S2.
* The creation of S1 and S2 ensures that the data consistency and integrity are maintained while providing a point-in-time copy of the production volume.
* These snapshots can be used for various purposes such as backup, testing, or disaster recovery without impacting the performance of the production volume.
References:
* Dell XtremIO Snapshots Guide
* XtremIO Best Practices for Snapshot Management

NEW QUESTION # 56
You are creating a virtual disk for a VMware VM running on vSphere 6.5. The VM will reside on a datastore provisioned from an XtremlO volume. You want to ensure proper performance and capacity usage.
How should the disk be presented to the guest?

A. Thick Provisioned, Lazy Zero
B. Raw Device Mappings
C. Thin Provisioned
D. Thick Provisioned, Eager Zero

Answer: D

Explanation:
When creating a virtual disk for a VMware VM that will reside on a datastore provisioned from an XtremIO volume, it is generally recommended to use Thick Provisioned, Eager Zeroed disks for optimal performance and capacity usage. Here's why:
* Thick Provisioned, Eager Zeroed (OC): This type of disk allocation pre-allocates the entire size of the disk and zeroes out all the blocks at the time of creation.This can lead to better performance because all the space is allocated and ready for use, and there is no overhead associated with zeroing out blocks during write operations1.
* Thick Provisioned, Lazy Zero (OA): While this also pre-allocates the entire disk size, it does not zero out the blocks until they are first written to.This can lead to potential performance degradation compared to Eager Zeroed disks when the blocks are zeroed on demand1.
* Thin Provisioned (OB): Thin provisioning allocates disk space on demand rather than pre-allocating the entire disk size.While this can be more efficient in terms of capacity usage, it may not provide the same level of performance as Thick Provisioned, Eager Zeroed disks, especially in high I/O environments1.
* Raw Device Mappings (OD): RDM allows a VM to directly access a LUN on the SAN.This is typically used for specific use cases that require direct access to the physical storage device and is not generally necessary for standard VM deployments1.
In summary, for ensuring proper performance and capacity usage, Thick Provisioned, Eager Zeroed (OC) is the recommended way to present the disk to the guest for a VMware VM running on vSphere 6.5 with an XtremIO volume1.

NEW QUESTION # 57
......

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