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質問 # 21
After the volumes are created, which steps are required to provision the XtremIO 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：
After creating volumes on an XtremIO system, the steps required to provision these volumes to the servers involve host configuration, establishing SAN connectivity, setting up an Initiator group, and mapping the volumes.
Host Configuration: Configure the host's HBA (Host Bus Adapter) to ensure it can connect to the SAN (Storage Area Network). This involves setting the correct parameters such as data transfer rates and queue depths.
SAN Connectivity: Establish connectivity between the host and the SAN. This includes zoning in a Fibre Channel network or setting up the appropriate network configurations for iSCSI.
Initiator Group: Create an Initiator group within the XtremIO system. This group will contain the identifiers (WWPN for Fibre Channel or IQN for iSCSI) of the host's HBA.
Volumes Mapping: Map the volumes to the host by creating a LUN (Logical Unit Number) mapping that associates the volumes with the Initiator group. This allows the host to see and access the volumes.
These steps ensure that the XtremIO volumes are correctly provisioned and accessible to the servers1. It's important to follow the specific procedures outlined in the official Dell XtremIO Deploy Achievement documentation to ensure proper configuration and to avoid any potential issues during the provisioning process.
質問 # 22
You want to use the REST API to interact with an XtremlO cluster. Which application can be used to perform this operation?
- A. ProComm
- B. FileZilla
- C. WinSCP
- D. cURL
正解：D
解説：
To interact with an XtremIO cluster using the REST API, the application that can be used is cURL. cURL is a command-line tool and library for transferring data with URLs and is commonly used for various types of HTTP requests.
The steps to use cURL with the XtremIO REST API are as follows:
Install cURL: Ensure that cURL is installed on your system. It is available for a variety of platforms including Windows, Mac, and Linux.
Prepare the API Request: Formulate your REST API request. This will include the XtremIO cluster's endpoint and the specific API call you wish to make.
Execute the cURL Command: Use the cURL command in your terminal or command prompt to execute the API request. The general syntax for a cURL request is:
curl [options] [URL]
For example, to list all volumes on an XtremIO cluster, you might use:
curl -u username:password -X GET "https://XMS_IP_Address/api/json/v2/types/volumes" Replace username:password with your actual credentials and XMS_IP_Address with the IP address of your XtremIO Management Server (XMS).
Analyze the Response: The response from the XtremIO cluster will be output to your terminal. It will typically be in JSON format, which you can then parse and analyze as needed.
Reference Documentation: For detailed information on the REST API calls available and their usage, refer to the official Dell XtremIO Deploy Achievement document1. This document will provide comprehensive guidance on implementing solutions using XtremIO systems, including the use of REST API for cluster interaction.
By following these steps and referring to the official documentation, you can successfully use cURL to interact with an XtremIO cluster via the REST API.
質問 # 23
Which Linux/UNIX command is used for monitoring the performance of system input/output devices?
- A. netstat
- B. nbtstat
- C. stat
- D. iostat
正解：D
解説：
The iostat command is used for monitoring the performance of system input/output devices on Linux/UNIX systems. It provides statistics about disk input/output operations and CPU utilization, which are essential for assessing the performance of these devices. The iostat command generates reports that can be used to change system configuration to better balance the input/output load between physical disks1. This command is particularly useful for system administrators who need to monitor and optimize disk performance and throughput2.
質問 # 24
When will an administrator receive an alert when "Small IO Alerts" are set to "enabled"?
- A. I/Os <1 KB are detected
- B. I/Os <8 KB are detected
- C. I/Os <2 KB are detected
- D. I/Os <4 KB are detected
正解：D
解説：
The "Small IO Alerts" feature in XtremIO is designed to notify administrators when a significant number of small I/O operations are detected, which could potentially impact the performance of the storage array. The threshold for these alerts is typically set to a default value that considers the architecture and performance characteristics of the system. In the case of XtremIO, the alert is triggered when I/O operations are smaller than 4 KB1. This threshold is set based on the understanding that smaller I/O sizes can lead to inefficient utilization of the storage array's resources and can be an indicator of suboptimal application behavior or configuration.
質問 # 25 
Refer to the Exhibit.
Which label represents the correct power cable connection between the left power supply in Storage Controller 1 to the Battery Backup Unit in an XtremIO X1 single X-Brick cluster?
- A. X1-SC1-PSU-L > X1-BBU2-Output1
- B. X1-SC1-PSU-L>X1-BBU2-Output2
- C. X1-SC1-PSU-L>X1-BBU1-Output1
- D. X1-SC1-PSU-L > X1-BBU1-Output2
正解：C
解説：
* Identify the Components: According to the Dell XtremIO Deploy Achievement document, the XtremIO X1 system includes a Storage Controller (SC) and a Battery Backup Unit (BBU)1.
* Understand the Configuration: For a single X-Brick cluster, the left power supply in Storage Controller 1 (X1-SC1-PSU-L) should be connected to the corresponding BBU to ensure proper power redundancy and failover capabilities1.
* Determine the Correct Connection: The document specifies that each Storage Controller's left power supply connects to Output1 of the BBU within the same X-Brick cluster1.
* Verify the answer: Based on the information provided, the correct power cable connection for the left power supply in Storage Controller 1 to the Battery Backup Unit in an XtremIO X1 single X-Brick
* cluster is to BBU1-Output1, which corresponds to option OB1.
質問 # 26
Based on the XtremIO X1 Storage Array Software Installation and Upgrade Guide, what is the correct sequence of installation steps?
正解：
解説：
1 - Configure ESRS
2 - Install the Storage Controllers
3 - Generate an XtremIO Log Bundle
4 - Install the XMS Server
5 - Initialize the Cluster Services
質問 # 27
A systems administrator wants to add an XtremlO cluster to their VPLEX environment. Which activity must the administrator perform first?
- A. Zone the VPLEX to XtremIO Storage Controllers
- B. Provision storage to the host
- C. Create and map volumes dedicated to VPLEX
- D. Create a minimum of two Initiator groups
正解：A
解説：
* Zoning: Zoning is the process of configuring which devices can communicate with each other on a storage network.
* VPLEX and XtremIO: The first step in adding an XtremIO cluster to a VPLEX environment is to zone the VPLEX to the XtremIO Storage Controllers.
* Initial Configuration: This step ensures that the VPLEX can recognize and communicate with the XtremIO storage, which is necessary before proceeding with other configurations.
References:
* Dell XtremIO and VPLEX Integration Guide
* Dell XtremIO Zoning Configuration Documentation
質問 # 28
A systems administrator has been informed that a new backup policy has been put in place for 500 production volumes on an XtremIO X2-R array. The 500 production volumes must be backed up four times a day at 8 AM, 12 PM, 4 PM, and 10 PM daily. The backup copies must be read only using the Protection Copies feature provided by the XtremIO 6.x code.
How many days of XtremlO Virtual Copy read only volumes can the array store before the original backups are deleted?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
解説：
The XtremIO X2-R array, with its Protection Copies feature provided by the XtremIO 6.x code, allows for efficient storage management through data reduction methods like deduplication and compression. This enables the array to store a large number of virtual copies without consuming physical capacity equivalent to the actual data size1.
Given that the backup policy requires 500 production volumes to be backed up four times a day, we can calculate the number of virtual copies created daily as ( 500 \times 4 = 2000 ) copies per day. The XtremIO X2-R array supports a significant number of virtual copies, and with the data reduction capabilities, it can store these copies for an extended period before reaching the system's maximum capacity.
The verified answer, according to the Official Dell XtremIO Deploy Achievement document, is that the array can store 6 days of XtremIO Virtual Copy read-only volumes before the original backups are deleted. This takes into account the array's ability to efficiently manage space with the Protection Copies feature2.
質問 # 29
When should the XtremIO X1 DAE power cables of X-Brick 1 be removed?
- A. Shutdown after the initial installation
- B. During an emergency shutdown procedure
- C. During a normal shutdown procedure
- D. Shutdown due to power loss
正解：B
解説：
The power cables of the XtremIO X1 DAE (Disk Array Enclosure) for X-Brick 1 should be removed during an emergency shutdown procedure. This is a critical step to ensure the safety of the hardware and data integrity in the event of an emergency that requires immediate power down of the system.
The process typically involves:
Identifying the Emergency: Recognize the situation that necessitates an emergency shutdown, such as power surges, environmental hazards, or other immediate risks.
Initiating Emergency Shutdown: Engage the emergency shutdown procedure as outlined in the XtremIO documentation. This may involve using emergency power-off (EPO) switches or other mechanisms designed for rapid shutdown.
Disconnecting Power Cables: Once the system is safely powered down, disconnect the DAE power cables from X-Brick 1. This step helps prevent any electrical damage or data corruption that could occur if power is unexpectedly restored during the emergency.
Ensuring Safety: Verify that all power sources are disconnected and that it is safe to handle the cables and hardware.
Documenting the Procedure: Record the steps taken during the emergency shutdown, including the removal of power cables, to assist in any subsequent investigation or system recovery efforts.
質問 # 30
A systems administrator recently purchased XtremlO for their Oracle environment. Along with path failover software, which best practice for HBA drivers is reinforced in the integration of Oracle with XtremIO?
- A. Increase the queue depth and execution throttle to "maximum"
- B. Decrease the queue depth and execution throttle to "minimum"
- C. Set the queue depth and execution throttle to "512"
- D. Set the queue depth and execution throttle to "256"
正解：D
解説：
For the integration of Oracle with XtremIO, the best practice for HBA drivers includes setting the LUN-queue depth to optimize performance. If a single host is connected to the X-Brick, the LUN-queue depth can be set to the maximum supported by the HBA, which is 256 for QLogic HBAs1. As additional hosts are added, this setting should be reduced proportionately until reaching a minimum of 32 to maintain optimal performance1.
Assess Host Connection: Determine the number of hosts connected to the X-Brick.
Set Queue Depth: For a single host, set the queue depth to 256. Adjust as necessary when more hosts are added.
Configure HBA Settings: Apply the queue depth setting in the HBA configuration.
Test Performance: Monitor the system's performance to ensure the settings are optimal.
Adjust if Necessary: If performance issues are observed, adjust the queue depth settings as needed.
質問 # 31
During the installation of an XtremlO cluster, you configure the ESRS server using a FQDN for Connect Home. During the test, you discover that the XtremlO cluster fails to connect home. What is a possible cause for this issue?
- A. Port 25 is blocked on the firewall
- B. DNS needs to be configured on the XMS
- C. DNS needs to be configured on the ESRS Gateway
- D. ESRS IP for an ESRS configuration can only be used
正解：B
質問 # 32
After the XtremlO X1 has been racked and the cabling has been checked, you now need to power on the XtremIO. What are the documented sequence of steps to power on the XtremIO?
正解：
解説：
Explanation:
Power the PDUs
Power on the BBUs
Power on the Storage Controllers
Power on the physical XMS Server
* Power the PDUs: The Power Distribution Units (PDUs) need to be powered first as they supply power to all the other components.
* Power on the BBUs: The Battery Backup Units (BBUs) are powered on next to ensure that the system has emergency power in case of a power failure.
* Power on the Storage Controllers: The storage controllers are responsible for managing the storage array, so they need to be powered on before the server.
* Power on the physical XMS Server: Finally, the XMS server, which provides management and monitoring capabilities, is powered on.
References:
* Dell XtremIO Deployment Services
* Dell XtremIO Deployment Guide and official documentation for detailed step-by-step procedures.
質問 # 33
A customer's environment consists of four XtremlO X1 clusters. Two clusters are running XtremIO software
4.0.4-41 and two clusters are running XtremIO software 3.0.3-11.
What is the minimum number of XMS servers required in this environment?
- A. 0
- B. 1
- C. 2
- D. 3
正解：C
解説：
* Understanding XtremIO XMS Requirements: The XtremIO Management Server (XMS) is a dedicated server that manages one or more XtremIO clusters. Each XMS can manage multiple clusters, but there are limitations depending on the software version.
* Software Version Compatibility:
* XtremIO Software 4.0.4-41: This version can manage multiple clusters with a single XMS server.
* XtremIO Software 3.0.3-11: This version has more stringent requirements and typically requires a separate XMS server for each cluster due to its older architecture and limitations.
* Cluster Configuration:
* For the two clusters running 4.0.4-41, a single XMS server can manage both.
* For the two clusters running 3.0.3-11, each cluster will require its own XMS server.
* Calculation of Minimum XMS Servers:
* 1 XMS server for the two clusters with software version 4.0.4-41.
* 2 XMS servers for the two clusters with software version 3.0.3-11.
Therefore, the total minimum number of XMS servers required = 1 (for 4.0.4-41) + 2 (for 3.0.3-11) = 3.
References:
* Dell XtremIO Deployment Guide
* XtremIO Management Server (XMS) Documentation
* Dell XtremIO Deployment Services
質問 # 34
A systems administrator's VMware Horizon environment consists of 1000 linked clones. Based on best practices, what is the minimum number of datastores required to support this configuration connected to XtremIO?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
解説：
* VMware Horizon environments with linked clones require optimal storage configurations for performance and management.
* According to best practices, each datastore should handle a specific number of linked clones to avoid performance bottlenecks.
* For 1000 linked clones, it is recommended to have a minimum of 6 datastores to distribute the load evenly and maintain optimal performance.
References:
* Dell XtremIO Best Practices for VMware Horizon
* VMware Horizon Architecture Guide
質問 # 35
In an XtremIO X2-R four X-Brick cluster, how many total rack units should be left for the Cable Management ducts?
- A. 4U
- B. 6U
- C. 2U
- D. 8U
正解：A
解説：
For an XtremIO X2-R four X-Brick cluster, the total number of rack units that should be left for the Cable Management ducts (CMD) is 4U1. This is based on the specifications provided by Dell EMC, which indicate that the Cable Management ducts are optional and, when included, require 2U of rack space for a two-brick cluster. Therefore, for a four-brick cluster, it would be logical to double the space to 4U to accommodate the additional cabling and ensure proper cable management1.
The process for allocating space for CMDs involves:
Reviewing Specifications: Check the official XtremIO X2 specifications to determine the space requirements for CMDs.
Allocating Rack Space: Based on the specifications, allocate the necessary rack units for CMDs within the customer's rack.
Installing CMDs: Install the CMDs in the allocated space to manage the cables effectively.
Organizing Cables: Arrange and secure the cables within the CMDs to ensure a neat and organized cable layout.
Verifying Installation: Confirm that the CMDs are installed correctly and that all cables are managed properly without any strain or interference.
質問 # 36
During an XtremlO X1 installation, which document should be used to identify the ports for IPMI cable connections?
- A. XtremlO Storage Array Installation Summary Form
- B. XtremIO Storage Array Software Installation and Upgrade Guide
- C. XtremIO Storage Array Site Preparation Guide
- D. XtremlO Storage Array Hardware Installation and Upgrade Guide
正解：D
解説：
During the installation of an XtremIO X1 system, the document that should be used to identify the ports for IPMI (Intelligent Platform Management Interface) cable connections is the XtremIO Storage Array Hardware Installation and Upgrade Guide. This guide typically contains detailed information about the hardware components, including diagrams and descriptions of the ports, which are essential for correctly connecting the IPMI cables.
The process of identifying the correct IPMI ports usually involves the following steps:
Locate the Guide: Access the XtremIO Storage Array Hardware Installation and Upgrade Guide. This document is designed to provide instructions specifically related to the physical components of the XtremIO system.
Identify the Ports: Use the diagrams and descriptions within the guide to locate the IPMI ports on the XtremIO hardware. These ports are typically labeled and may be color-coded to help distinguish them from other ports.
Connect the Cables: Once the IPMI ports have been identified, connect the IPMI cables to these ports as per the instructions provided in the guide. Ensure that the connections are secure and that the cables are not obstructing any other components.
Verify the Connections: After connecting the cables, verify that the connections match the diagrams and descriptions in the guide. This step is crucial to prevent any issues related to incorrect cabling.
Reference Documentation: For the most accurate and up-to-date information, always refer to the latest version of the XtremIO Storage Array Hardware Installation and Upgrade Guide1. This ensures that any changes or updates to the hardware are taken into account during the installation process.
By following these steps and referring to the correct documentation, you can ensure that the IPMI cable connections are made correctly, which is vital for the remote management and monitoring of the XtremIO X1 system.
質問 # 37
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