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NEW QUESTION # 13
An Implementation Engineer is performing a hardware NDU from a fully populated FlashArray//X90R3 to a FlashArray//XL that already contains 20 DFM-Ds. The drive transfer is complete, and the //XL is still in SPM (Shelf Mode). What is the next step the Implementation Engineer should take to continue the upgrade?
Answer: B
Explanation:
When upgrading from a FlashArray//X to a FlashArray//XL, the hardware migration often involves handling DirectMemory Modules (DMMs) differently than standard data drives. DMMs are high-performance cache modules that reside in the controller chassis.
In this specific scenario-migrating a fully populated //X90R3 to an //XL that already has its own set of DirectFlash Modules (DFM-Ds)-the DMMs from the old chassis need to be moved to the new chassis to preserve their cache function or be properly decommissioned.
The correct procedure is to Evacuate DMMs as a datapack then install into any slot in //XL.
DMMs cannot be simply "hot-swapped" randomly while the system is live in a way that disrupts the cache map.
They must be logically grouped and evacuated (conceptually "vacated" of active data) so they can be safely removed from the old chassis.
Once removed, they can be installed into the new //XL chassis. The //XL architecture supports DMMs in specific slots, and Purity will detect and re-incorporate them into the cache pool.
This ensures that the expensive SCM (Storage Class Memory) hardware is reused in the new system without causing data integrity issues during the transition.
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NEW QUESTION # 14
A customer's management network connectivity is NOT available at the time of array deployment. Which switch should an Implementation Engineer use to avoid those checks during puresetup flow?
Answer: B
Explanation:
The puresetup initialization script automatically runs a series of network validation tests to ensure the array can reach default gateways, DNS servers, and Pure1. If the management network is not yet live or is air-gapped during the install, these tests will fail, potentially blocking the setup process.
To proceed with the initialization despite the missing network, the Implementation Engineer must append the --skip-management-connectivity-tests flag to the puresetup command.
This flag instructs the script to bypass the ping/DNS lookup checks on the management interface.
It allows the engineer to complete the array initialization (naming, IP assignment) so the array is "up" and ready for local config, with the understanding that full management connectivity will be established and verified later.
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NEW QUESTION # 15
During an NDU, when is the Implementation Engineer required to install additional NVRAM modules in slots
2 and 3?
Answer: C
Explanation:
FlashArray models differ in their NVRAM requirements based on their performance tier and throughput capabilities. Lower and mid-range models (like the //X10, //X20, and //X50) typically operate with two NVRAM modules installed in slots 0 and 1. However, high-performance models (like the //X70 and //X90) require double the NVRAM buffer to handle the increased write I/O bandwidth, necessitating four NVRAM modules (populating slots 0, 1, 2, and 3).
When performing a Data-in-Place Upgrade (NDU) from a FlashArray//X50R3 to a FlashArray//X70R4 , the chassis remains (or is upgraded in a way that preserves data), but the new controller configuration shifts from a "2-NVRAM" requirement to a "4-NVRAM" requirement. Therefore, as part of the physical upgrade procedure, the Implementation Engineer must install two additional NVRAM modules into slots 2 and 3 of the chassis to support the new //X70 controllers.
If these modules are not added, the new //X70 controllers will detect an "insufficient hardware" condition and fail to boot or initialize the Purity software properly. This step is unique to upgrades crossing the boundary between mid-range and high-end models.
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NEW QUESTION # 16
Which PCIe slot must be used for a SAS HBA on R4B revision controllers?
Answer: B
Explanation:
While modern FlashArrays (like the XR4 and XL series) primarily use NVMe-oF/RoCE for backend connectivity, specific configurations or legacy support scenarios may still require a SAS HBA (Serial Attached SCSI Host Bus Adapter), for example, when connecting to older SAS-based expansion shelves during a migration or hybrid configuration.
For R4B revision controllers (a specific hardware revision of the Gen 4 controller), the strict hardware addressing map requires that any SAS HBA be installed in PCIe Slot 1.
Slot 1 provides the specific PCIe lane routing and BIOS interrupts required for the legacy SAS controller to be recognized and function without conflicting with the native NVMe fabric.
Installing the card in Slot 0 (typically reserved for RoCE/Ethernet backend) or Slot 4 would likely result in the card being ignored by Purity or causing boot errors due to resource conflict.
NEW QUESTION # 17
After completing an HWNDU, what command should an Implementation Engineer run to confirm if any open alerts are transitioning to a 'closing' status?
Answer: C
Explanation:
During and after a Hardware Non-Disruptive Upgrade (HWNDU), the FlashArray may generate various alerts related to component removals, path failovers, or temporary redundancy reductions. Once the upgrade is physically complete and the software has stabilized, the Implementation Engineer must verify that the array has returned to a fully healthy state.
The command purealert list is the primary tool for this verification. It displays the current table of active alerts on the system.
If the array is healthy, this list should be empty or contain only "Info" level messages.
If the system is still recovering, you might see alerts with a status indicating they are "closing" or "downgrading" as the conditions resolve (e.g., "Controller redundancy restored").
pureaudit list shows the history of user commands, not system health alerts. puremaintenance is not a standard command for checking alert status. Therefore, purealert list is the correct command to validate that no critical hardware or software issues remain active after the maintenance window.
NEW QUESTION # 18
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