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NEW QUESTION # 158
During an NDU, when is the Implementation Engineer required to install additional NVRAM modules in slots 2 and 3?
Answer: A
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 # 159
An Implementation Engineer arrives on site to complete a shelf evac. What action must take place before Pure Support can run the completion commands?
Answer: D
Explanation:
A "shelf evacuation" is a non-disruptive capacity consolidation feature. When a customer upgrades to denser flash modules or decommissions older hardware, the Purity operating system transparently migrates all active data blocks off the target DirectFlash Shelf and redistributes them onto the remaining chassis capacity.
Once the GUI and CLI report that the evacuation is 100% complete and the drives are officially empty, the physical data migration is done. However, the Implementation Engineer cannot simply power off the shelf and rip out the cables. The FlashArray's internal database and topology map still retain historical references, WWNs, and hardware associations to that specific shelf and its empty drive bays.
To cleanly purge the shelf from the cluster's active topology and prevent persistent "missing hardware" alerts, Pure Storage Support must execute restricted, backend completion commands (such as the hidden purehw shelf remove script). Because these commands are locked behind advanced engineering privileges, the onsite Implementation Engineer must explicitly Enable Remote Assist (RA) . Remote Assist opens a secure, outbound SSH tunnel from the array's Callhome Connection Manager directly to the Pure Storage support cloud, allowing the remote engineer to log in, run the cleanup scripts, and give the onsite engineer the final green light to physically disconnect the hardware.
NEW QUESTION # 160
The Pure Engagement Request (PER) specifies that iSCSI ports ETH2 and ETH3 should be set to 10 Gb/s.
After configuring the ports and connecting them to the SAN, the Implementation Engineer observes that ETH2
/3 are not negotiating and display 0 b/s. The SAN is operating at 40 Gb/s, with support for up to 100 Gb/s.
What should the Implementation Engineer do to resolve this issue and complete the install?
Answer: B
Explanation:
This scenario describes a physical layer mismatch between the FlashArray optics and the customer's switch infrastructure.
* The PER (planning document) specified 10 Gb/s , so the Implementation Engineer likely installed 10 Gb SFP+ transceivers into the array.
* The SAN Switch is operating at 40 Gb/s (likely using QSFP+ ports).
You cannot simply "force negotiate" a 10Gb SFP+ optic to run at 40Gb/s, nor can you plug a 10Gb SFP+ directly into a 40Gb QSFP+ port without specific breakout cables or QSA adapters that match the signaling.
The physical transceivers themselves are incompatible with the link speed required by the switch.
To resolve this, the Implementation Engineer must replace the transceivers with the appropriate type .
* If the switch is 40Gb native, the array needs 40Gb (QSFP+) optics (if supported on that slot).
* Alternatively, if the customer intends to use 10Gb, they must provide 10Gb ports on their switch side.
* Given the prompt implies the SAN is 40Gb, the 10Gb optics in the array are the incorrect hardware for that link.
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NEW QUESTION # 161
After completing an HWNDU, what command should an Implementation Engineer run to confirm if any open alerts are transitioning to a 'closing' status?
Answer: B
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 # 162
An Implementation Engineer is performing a FlashArray//X to FlashArray//XL HWNDU. After rebooting a controller, the new controller fails to reach a ready state. Which command should the Implementation Engineer run to resolve the issue?
Answer: B
Explanation:
Upgrading from a FlashArray//X to a FlashArray//XL is a complex procedure involving significant hardware and network architecture changes. A known issue during specific phases of this upgrade involves the synchronization of ARP tables and IP neighbor entries between the legacy environment and the new controller architecture, which can prevent the High Availability (HA) link from establishing correctly.
If the new controller hangs or fails to reach a "Ready" state after a reboot, the engineering-level script ha_sync.py --resync ipneigh is the prescribed resolution.
This script forces a resynchronization of the IP neighbor table (ARP cache) and HA state information.
It clears stale entries that might be pointing to old MAC addresses or interfaces that moved during the X-to-XL transition.
Once cleared, the controllers can correctly rediscover each other over the internal HA interconnect and proceed to a healthy clustered state.
Options like hardware_check.py are diagnostic only, and firewall.py is for packet filtering, not ARP/HA sync issues.
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NEW QUESTION # 163
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