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認定する-高品質なD-XTR-OE-A-24対応資料試験-試験の準備方法D-XTR-OE-A-24日本語試験情報
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EMC D-XTR-OE-A-24 認定試験の出題範囲:
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有難い-正確的なD-XTR-OE-A-24対応資料試験-試験の準備方法D-XTR-OE-A-24日本語試験情報
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EMC Dell XtremIO Operate Achievement 認定 D-XTR-OE-A-24 試験問題 (Q13-Q18):
質問 # 13
After the volumes are created, which steps are required to provision the XtremlO volumes to the servers?
- A. Host configuration, RAID groups, SAN connectivity, and volumes mapping
- B. Host configuration, SAN connectivity, encryption, and volumes mapping
- C. Host configuration, SAN connectivity, Initiator group, and volumes mapping
- D. Host configuration, create pools, SAN connectivity, and volumes mapping
正解:C
解説:
To provision XtremIO volumes to servers, the following steps are typically required:
* Host Configuration: This involves setting up the host with the necessary drivers and tools to communicate with the XtremIO storage system.It may include installing HBAdrivers, multipathing software, and configuring host parameters to optimize performance1.
* SAN Connectivity: Establishing SAN connectivity is crucial for the host to access the XtremIO volumes.This step involves zoning in the SAN switches to ensure that the host can see the XtremIO storage controllers1.
* Initiator Group: An initiator group is a collection of host initiators (WWNs or IQNs) that are allowed to access a set of volumes.Creating and configuring an initiator group in the XtremIO system is necessary to control access to the volumes1.
* Volumes Mapping: The final step is to map the volumes to the host. This is done by associating the volumes with the initiator group that contains the host's initiators.Once mapped, the volumes will be accessible to the host for data storage and retrieval1.
The other options, such as RAID groups (OA), creating pools (OB), and encryption (OC), are not directly related to the provisioning process of XtremIO volumes to servers.RAID groups and pools are typically managed within the storage system itself, while encryption is a data security feature that may be configured as part of the overall storage setup1.
質問 # 14
A systems administrator wants to add an XtremlO cluster to their VPLEX environment. Which activity must the administrator perform first?
- A. Create a minimum of two Initiator groups
- B. Zone the VPLEX to XtremIO Storage Controllers
- C. Create and map volumes dedicated to VPLEX
- D. Provision storage to the host
正解:B
解説:
When integrating an XtremIO cluster into a VPLEX environment, the first activity that needs to be performed is zoning the VPLEX to the XtremIO Storage Controllers. Zoning is a SAN (Storage Area Network) configuration step that controls access between the storage and hosts, and in this case, between VPLEX and XtremIO. Here's the process:
* Zoning: This involves configuring the SAN fabric to ensure that the VPLEX directors can communicate with the XtremIO Storage Controllers.Zoning is crucial for establishing a secure and efficient connection between the two systems1.
* Provisioning Storage (OA): While provisioning storage to the host is an important step, it typically comes after the zoning has been established.
* Creating and Mapping Volumes (OB): Creating and mapping volumes dedicated to VPLEX is also a subsequent step that can only be performed after the zoning is in place.
* Initiator Groups (OC): Creating initiator groups is necessary for mapping storage to hosts, but it is not the first step in the process.The initiator groups will be used after zoning is completed to define access control for the VPLEX directors1.
In summary, the first activity to perform when adding an XtremIO cluster to a VPLEX environment is to zone the VPLEX to the XtremIO Storage Controllers (OD), as this establishes the foundational connectivity required for further configuration and provisioning steps1.
質問 # 15
What is the design concept of the XtremIO X2-S X-Brick configuration?
- A. High fault tolerance
- B. High logical capacity
- C. High disaster risk reduction
- D. High physical capacity
正解:B
解説:
* The design concept of the XtremIO X2-S X-Brick configuration is to provide high logical capacity.
* This allows for efficient storage management and data reduction technologies, enabling organizations to maximize their storage resources.
* The high logical capacity supports extensive data consolidation and improved storage utilization.
References:
* Dell XtremIO X2-S Configuration Guide
* XtremIO Product Documentation
質問 # 16
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. Thin Provisioned
- B. Thick Provisioned, Eager Zero
- C. Thick Provisioned, Lazy Zero
- D. Raw Device Mappings
正解:B
解説:
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.
質問 # 17
Which file systems support UNMAP on a Linux server connected to an XtremlO cluster?
- A. ReiserFS, Ext3, and XFS
- B. Ext4, XFS, and ZFS
- C. Ext3, Ext4, and XFS
- D. ReiserFS, Ext4, and ZFS
正解:C
解説:
For Linux servers connected to an XtremIO cluster, the file systems that support the UNMAP command include Ext3, Ext4, and XFS. The UNMAP command allows these file systems to inform the storage array about blocks that are no longer in use, facilitating better space reclamation and efficiency in storage management.
References:
* Dell EMC documentation on XtremIO configurations for Linux environments confirms the support for UNMAP with these specific file systems.
* Linux kernel documentation also supports the use of UNMAP/TRIM operations with Ext3, Ext4, and XFS for storage optimization.
質問 # 18
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