Free D-PDD-OE-23 sample questions

Correct answer: user

The 'user' role is the most appropriate choice. It allows for day-to-day management and monitoring tasks such as checking system status, viewing configurations, and managing MTree and storage units, but it restricts actions that could compromise data integrity, such as deleting snapshots or modifying retention lock policies. This aligns perfectly with the principle of least privilege required by the security team.

Correct answers: Change the cleaning schedule to run on a specific day of the week with lower activity, such as a weekend.; Decrease the cleaning throttle to a lower value, such as 20 or 30.

Moving the cleaning schedule to a period of lower I/O activity, like a weekend, is a best practice. This provides a larger window for the process to complete without conflicting with critical backup operations.

Decreasing the throttle reduces the amount of system resources the cleaning process consumes at any given time. While this will make the cleaning process take longer overall, it will have less of an impact on concurrent system operations, allowing it to run in the background with minimal performance degradation on backups.

Correct answer: Modify the data movement policy to keep data on the active tier for a longer period before moving it to the cloud tier.

High retrieval costs indicate that data is being moved to the cloud and then quickly recalled. By extending the time data resides on the high-performance active tier, the company can satisfy retrieval requests locally without incurring cloud egress and API charges. This directly addresses the root cause of the unexpected costs.

Correct answer: True

This statement is true. A core principle of the Data Invulnerability Architecture (DIA) is its end-to-end data verification. It continuously checks data for integrity from the moment it is ingested, through the deduplication process, and while it resides at rest, automatically detecting and correcting issues to prevent data corruption.

Correct answer: It enables the Veeam proxy server to perform deduplication, sending only unique data segments over the network.

This is the core benefit of DD Boost. The DD Boost library is integrated into the Veeam data mover/proxy. This allows the proxy to query the PowerProtect DD to see which data segments already exist. The proxy then only sends new, unique segments over the network, drastically reducing bandwidth consumption and improving backup performance. This process is known as distributed segment processing or source-side deduplication.

Correct answer: The retention period cannot be shortened, but it can be extended further if needed.

Retention Lock Compliance mode is designed to be extremely strict to meet regulations like SEC 17a-4. Once a retention period is set for a file, it can NEVER be shortened. The lock can only be extended to a longer period. The incorrect 10-year policy is now irreversible, and the organization must wait for it to expire.

Correct answer: layer detailed

The correct command is `filesys show compression layer detailed`. This provides a comprehensive breakdown of space savings, including the total pre-comp and post-comp sizes, as well as the global and local compression factors, which represent deduplication and local compression respectively.

Correct answer: To automatically balance the storage load by moving MTrees between physical nodes without changing the client access path.

This is the core function of namespace mobility in SmartScale. It abstracts the physical location of the data (MTrees) from the logical access path. This allows the system to non-disruptively move MTrees between nodes in the cluster to balance capacity and performance, all while clients continue to access the data through a single, unified namespace without any reconfiguration.

Correct answer: It minimizes disk accesses during deduplication by leveraging CPU and RAM to check for segment uniqueness.

The key innovation of SISL is its ability to avoid being I/O bound. It uses a scalable architecture that leverages modern multi-core CPUs and large amounts of RAM to hold segment fingerprints in memory. This allows it to quickly identify unique data segments without needing to perform slow, random disk reads for every check, resulting in very high ingest performance.

Correct answer: Virtual Tape Library (VTL)

The Virtual Tape Library (VTL) feature is designed for this exact scenario. It allows the PowerProtect DD system to emulate a physical tape library, including tape drives and cartridges, over a Fibre Channel connection. The AIX server will see the PowerProtect DD as a standard tape library, allowing the unmodified legacy application to perform backups successfully.