Free D-PVM-DS-01 sample questions

Correct answer: The array may experience severe performance degradation and high latencies under the projected workload.

The manufacturing bin file represents the actual hardware that will be shipped. If it has fewer backend slices than what PowerSizer determined was necessary to handle the workload (resulting in 90% utilization), the backend directors will be under-provisioned. This will lead to contention and bottlenecks, causing high latencies and an inability to meet performance SLAs, which is the primary risk of such a discrepancy.

Correct answer: Use Non-Disruptive Migration (NDM) for the VMAX3 and Open-Minimally Disruptive Migration (O-MDM) for the third-party array.

Non-Disruptive Migration (NDM) is the correct choice for the VMAX3-to-PowerMax migration as it is designed for seamless, zero-downtime migrations between Dell arrays. For the third-party array, Open-Minimally Disruptive Migration (O-MDM) is the appropriate technology, as it is designed to migrate data from non-Dell storage systems to PowerMax with minimal disruption.

Correct answer: SRDF/Star

SRDF/Star is the correct topology. It allows the primary site (A) to replicate synchronously to a nearby site (B) for zero data loss (RPO=0) and concurrently replicate asynchronously to a distant site (C). This meets the requirement for both local high availability/DR and long-distance regional disaster protection from the primary site. Cascaded SRDF would introduce a dependency on Site B being available to replicate to Site C.

Correct answer: File system clones

File system clones are the ideal feature for this use case. A clone is a writable, point-in-time copy of a file system that is highly space-efficient as it only consumes storage for new or changed data. This allows for the rapid creation of multiple independent environments for development and testing without consuming the full capacity of the source file system for each copy.

Correct answers: storsrvd; symapid

The storsrvd (storage server daemon) is responsible for handling I/O requests to the managed storage arrays, making it essential for communication.

The symapid (Symmetrix API daemon) is the core service that listens for and processes SYMCLI commands and API requests. It is fundamental for any Solutions Enabler functionality.

Correct answer: Director

The Director is the 'brain' of the PowerMax array. It is a blade containing CPUs, memory (cache), and I/O modules for front-end and back-end connectivity. It runs the PowerMaxOS real-time operating system and handles all data movement and management functions within the array.

Correct answer: False

This statement is false. While a source volume can have many snapshots across multiple generations, a target device can only be linked to a snapshot from the latest generation (Generation 0). To access data from an older generation's snapshot, that snapshot must first be restored to a source volume, and then a new snapshot can be taken to which a target can be linked.

Correct answer: Unisphere deployed as a vApp in a high-availability VMware cluster.

Deploying Unisphere as a vApp (virtual appliance) in a highly available VMware cluster is the best solution. This meets the requirement for a centralized platform capable of managing multiple arrays, fulfills the security mandate by allowing deployment on an isolated network external to the array hardware, satisfies the operations team's need for a pre-packaged and easy-to-maintain solution, and provides the necessary workload planning and headroom analysis features. The HA nature of the VMware cluster addresses the high-availability requirement.

Correct answer: 1. Load the new code. 2. Run health check. 3. Commit the new code.

The standard Dell process for a PowerMax software upgrade is to first load the new code onto the array, which can be done online without impact. The next critical step is to run a comprehensive health check to ensure the array is in a stable state to proceed. Finally, the commit phase is executed, which activates the new code in a rolling, non-disruptive fashion.

Correct answer: eNAS uses dedicated hardware blades (Data Movers) within the PowerMax rack, while SDNAS containerizes the NAS services to run within the PowerMaxOS.

This is the core difference. eNAS (embedded NAS) relies on dedicated physical hardware blades, known as Data Movers, installed in the PowerMax rack to provide file services. SDNAS (Software-Defined NAS) is a more modern approach where the NAS software stack is containerized and runs directly within the PowerMaxOS on the array's directors, eliminating the need for separate dedicated hardware.