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NEW QUESTION # 196
During an intra-series upgrade from //XR3 to //XR4, which command should the Implementation Engineer run to verify host connectivity before removing the secondary controller?
Answer: B
Explanation:
Executing an intra-series Hardware Non-Disruptive Upgrade (HWNDU) from a FlashArray//XR3 to an //XR4 is a highly orchestrated procedure. It involves failing over active I/O responsibilities, physically removing legacy controller nodes, and seamlessly introducing newer generation hardware without causing any downtime for the connected hosts.
Before an Implementation Engineer physically unplugs or removes a secondary controller-or initiates a failover to take the primary controller offline-it is an absolute prerequisite to verify that the frontend host multi-pathing is healthy. If a host is accidentally single-pathed to the controller that is about to be removed, an all-paths-down (APD) event will occur, causing immediate application disruption.
To safely validate this from the array's perspective, the engineer must execute the iobalance --sampletime 30 command within the Purity CLI. This specialized diagnostic command forces the array to actively sample and monitor the incoming SCSI/NVMe read and write commands across all frontend target ports for a continuous
30-second window. The output produces a detailed matrix showing exactly how traffic is distributed across both controllers and all active host initiators. If the data confirms that I/O is cleanly balanced and redundantly flowing across the surviving controller's paths, the engineer can confidently proceed with the physical removal phase of the HWNDU.
NEW QUESTION # 197
During a FlashArray//XR5 upgrade, when should the Implementation Engineer run start_ndu controller-ndu to set the HWNDU specific tunable?
Answer: B
Explanation:
When executing a Hardware Non-Disruptive Upgrade (HWNDU) to a new chassis generation, such as moving to a FlashArray//XR5, the new controllers must be properly prepped to join the existing, older- generation cluster. The correct sequence of operations is critical to prevent the cluster from rejecting the mismatched hardware.
Once the new //XR5 controller is physically inserted into the slot of the removed older controller, the Implementation Engineer must first install the correct target version of the Purity//FA operating system locally using the pureinstall command via the KVM console. After Purity is successfully installed, but strictly before the controller is logically initialized to join the cluster (via the puresetup secondary command), the engineer must execute the start_ndu controller-ndu script.
This script applies specific internal HWNDU tunables-such as relaxing hardware mismatch checks, bypassing specific alert monitors, and adjusting heartbeat timeouts. Setting these tunables ensures that when the controller is finally initialized, the surviving primary controller safely accepts it as a valid secondary partner without triggering a system fault, hardware rejection, or disrupting active host I/O.
NEW QUESTION # 198
Which power cable receptacle type does the FlashArray//X accessory kit contain?
Answer: A
Explanation:
Standard enterprise data center power distribution units (PDUs) typically use C13 or C19 outlets. The FlashArray//X series power supplies utilize C14 inlets (the male connector on the chassis side). Therefore, the standard accessory kit included with a FlashArray//X ships with C13 to C14 power cables.
The C13 connector plugs into the array's power supply (matching the C14 inlet), and the C14 connector on the other end is designed to plug into a standard rack PDU (which typically has C13 outlets). This is the industry- standard "jumper cord" for rack-mounted server and storage hardware.
It is important for the Implementation Engineer to verify this during the pre-install phase. If the customer's facility uses non-standard PDUs (like those with C19 outlets or wall-style plugs), the standard kit cables will not fit, and the engineer must ensure the correct cables were ordered separately or provided by the customer.
However, for the exam and standard BOM validation, the correct answer is the ubiquitous C13 to C14 cable type.
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NEW QUESTION # 199
Refer to the exhibit.
During the puresetup portion of the new controller setup of an NDU, the Implementation Engineer gets an error message regarding missing or unassigned network interfaces.
What action should the Implementation Engineer take next?
Answer: D
Explanation:
During a cross-generational Hardware Non-Disruptive Upgrade (HWNDU), such as migrating from a FlashArray//XR3 to an //XR4, the physical network port layout changes significantly. Older controllers often utilized integrated onboard ports (like eth2 and eth3) for Replication or iSCSI. In newer architectures, these services are shifted to dedicated OCP mezzanine cards or PCIe expansion slots, which may enumerate differently within the operating system.
When the Implementation Engineer runs the puresetup script to initialize the newly inserted controller, the software attempts to validate the legacy network configuration against the new physical hardware topology. If it cannot find the exact physical ports that were mapped on the old controller, puresetup will pause and display an interactive warning or error message indicating that certain network interfaces are missing.
Because this mismatch is an expected architectural consequence of the hardware upgrade, the correct procedure is to acknowledge the warning and continue with the setup process . The engineer must allow the controller to finish its base initialization and join the cluster quorum. Once the new controller is online and functioning as a secondary node, the engineer can log into the Purity CLI or GUI and manually use the purenetwork commands to reassign the affected services (e.g., Replication or iSCSI) to the new, correctly enumerated physical ports before proceeding with the controller failover. Stopping the process or attempting to force the script to accept invalid ports will stall the upgrade.
NEW QUESTION # 200
When performing an install on a FlashArray, what step should be taken first?
Answer: C
Explanation:
The installation process begins with configuring controller 0 (CT0) first, as it is the primary controller responsible for initial system setup.
NEW QUESTION # 201
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