D-PST-OE-23 Dell PowerStore Operate Practice Questions
Prepare for D-PST-OE-23 with more than an answer.
- Exam fee
- $230 USD
- Level
- Skills Certification
- Valid for
- No expiration
Domains covered on the exam 7
- PowerStore Concepts and Features5%
- PowerStore Administration12%
- PowerStore Block Provisioning17%
- PowerStore File Provisioning17%
- PowerStore VMware Provisioning17%
- PowerStore Remote Protection17%
- PowerStore Migration15%
- 1
A financial company wants to use a PowerStore file system for an archive solution that requires WORM (Write Once, Read Many) capabilities for compliance. The administrator needs to enable File-Level Retention (FLR). What is a mandatory prerequisite before FLR can be enabled on a file system?
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Correct answer: B
File-Level Retention is a permanent setting that fundamentally changes how the file system operates to ensure data immutability. Because of this, it must be enabled during the creation of the file system. It is not possible to enable FLR on an existing file system that was created without it, nor is it possible to disable FLR once it has been enabled.
- 2
After a regional power outage, an ESXi host in a stretched vSphere cluster loses connectivity to its local PowerStore array, which is part of a Metro Volume configuration. The VMs on that host automatically restart on other hosts at the surviving site. Which technologies are primarily responsible for this automated recovery? (Select TWO)
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Correct answer: A, C
PowerStore Metro Volume provides the synchronous, active/active storage, ensuring that an identical, up-to-date copy of the datastore is available at the surviving site for the VMs to use immediately.
vSphere HA is the VMware technology that detects the failure of the ESXi host (due to the power outage) and automatically restarts its registered VMs on the remaining available hosts in the cluster.
- 3
Case Study
A mid-sized e-commerce company, ShopFast Inc., is modernizing its data center. They have purchased a PowerStore 5200T array to replace their aging Dell EMC SC Series (Compellent) storage. The environment consists of a VMware vSphere cluster for their web and application servers, and a physical Microsoft SQL Server cluster for their primary database. Both environments currently use iSCSI for storage connectivity.
The primary goals of the project are to migrate all workloads to the PowerStore with minimal downtime, improve data protection, and simplify management. The SQL Server database is spread across three LUNs (data, logs, tempdb) and requires application-consistent backups. The vSphere environment should be optimized for performance and granular VM management.
Requirements:
- Migrate the SQL Server and VMware workloads non-disruptively.
- Implement a backup strategy that ensures the SQL database can be recovered to a consistent state.
- Transition the VMware environment to leverage modern storage capabilities for better efficiency and control.
- All management of the new environment should be as centralized as possible.
Which solution best meets all of ShopFast's requirements?
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Correct answer: C
This solution addresses all requirements optimally. The Import feature provides a non-disruptive migration from the SC Series. Creating a Volume Group for the SQL LUNs allows a single Protection Policy to create application-consistent snapshots. Importing the VMware LUNs directly into a Storage Container is the most efficient way to convert the environment to vVols, meeting the goal of leveraging modern, granular storage capabilities. This comprehensive approach uses the PowerStore's native features to their fullest extent.
- 4
An administrator is configuring NDMP backups for a PowerStore NAS server. The backup software is located on a separate network segment from the PowerStore's management interface. What must be configured on the PowerStore to allow the backup server (DMA) to communicate with the NAS server for backup operations?
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Correct answer: B
For NDMP operations, communication happens directly with the NAS server, not the PowerStore's management interface. If the backup server is on a different network, you must configure a specific network interface on the NAS server that is reachable by the backup server. This allows the backup traffic to be isolated and correctly routed without traversing the management network.
- 5
A PowerStore administrator is troubleshooting a performance issue where an iSCSI-attached database server is experiencing high latency. The administrator has already ruled out issues on the host and the network. When viewing the volume's performance metrics in PowerStore Manager, which two metrics are most critical for diagnosing a storage-side bottleneck? (Select TWO)
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Correct answer: B, D
IOPS indicates the load being placed on the volume. A very high IOPS value might indicate that the volume is reaching its performance limits, which would result in higher latency.
Latency, measured in milliseconds, is the direct measurement of the time it takes for the storage system to service an I/O request. A high latency value reported by the array itself is a clear indicator of a storage-side performance problem.
- 6
True or False: When a PowerStore volume is restored from a snapshot, the original volume is overwritten, but any existing snapshots of that volume taken after the restore point are preserved.
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Correct answer: B
This statement is false. When a volume is restored from a snapshot, all snapshots that were taken after the point-in-time of the selected snapshot are deleted. The restore operation reverts the volume to a previous state, and any subsequent history is invalidated and therefore removed. This is a critical consideration during recovery operations.
- 7
A volume is replicated asynchronously to a remote PowerStore array. An administrator performs a 'Sync' operation on the replication session. What is the purpose of this action?
sequenceDiagram participant Admin participant Source PowerStore participant Target PowerStore Admin->>Source PowerStore: Initiate 'Sync' Source PowerStore->>Target PowerStore: Transfer pending delta data Target PowerStore-->>Source PowerStore: Acknowledge sync completion Source PowerStore-->>Admin: Report session synchronizedShow answer details
Correct answer: C
The 'Sync' or 'Sync Now' operation allows an administrator to manually trigger a replication cycle on demand. This is useful right before a planned maintenance window or a planned failover. It forces the source array to immediately send any outstanding changes to the destination, updating the recovery point and minimizing data loss beyond what the scheduled RPO provides.
- 8
A financial services company is implementing a PowerStore T array for a new VDI environment. The security team requires that all data-at-rest be encrypted using an external Key Management Interoperability Protocol (KMIP) compliant server for centralized key control. During the initial setup, the administrator configures the external key manager but notices the system is still using its internal keys. What is the most likely reason for this behavior?
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Correct answer: C
PowerStore's Data-at-Rest Encryption (D@RE) is always on. However, the choice between using the internal key manager or an external KMIP server is made during the Initial Configuration Wizard (ICW). Once this choice is made, it cannot be changed without reinitializing the entire cluster. Therefore, if the system was initially configured with the internal manager, simply adding an external one later will not cause the system to switch over.
- 9
A media production house uses a PowerStore file system to store large video files accessed by both Windows and macOS clients. To manage storage consumption, the administrator needs to implement quotas. The requirement is to limit the total storage used by the '/projects/active' directory and all its subdirectories to 5TB, regardless of which user owns the files. Which quota type should be configured to meet this requirement?
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Correct answer: C
A Tree Quota is the correct choice because it limits the space consumed by a specific directory tree (a directory and all its contents), irrespective of file ownership. A User Quota limits the space consumed by a specific user across the entire file system, and a Group Quota does the same for a group. Since the requirement is to limit a specific directory path, a Tree Quota is the appropriate mechanism.
- 10
An administrator is provisioning storage for a new VMware vSphere environment on a PowerStore X array. The primary goal is to enable granular, VM-level data services like snapshots and replication directly from the array. Which storage object must be created on the PowerStore array to support this requirement?
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Correct answer: B
To leverage VM-level data services on the PowerStore array, you must use Virtual Volumes (vVols). vVols are provisioned from a Storage Container, which is a logical pool of storage on the PowerStore that is presented to vSphere. This allows the array to be aware of individual VMs and their virtual disks, enabling granular control over snapshots, replication, and QoS at the VM level.
