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>> FlashArray-Implementation-Specialist Prüfungsfrage <<
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183. Frage
During a hardware NDU from FlashArray//XR2 or XR3 to an XR4 model, which default service on-board ports are NO longer present in the XR4 controller design?
Antwort: C
Begründung:
In the architectural evolution from FlashArray//XR2 and //XR3 to the FlashArray//XR4, Pure Storage made significant changes to the controller's rear panel and I/O design to accommodate higher performance and PCIe Gen 4 capabilities. One of the most critical changes for an Implementation Engineer to plan for during a hardware Non-Disruptive Upgrade (NDU) is the removal of the onboard, default iSCSI ports that were present on previous generations.
On //XR2 and //XR3 controllers, there were onboard Ethernet ports often used for iSCSI host connectivity without requiring a discrete PCIe adapter. However, the //XR4 controller design removes these dedicated onboard iSCSI ports to streamline the motherboard design and shift host I/O strictly to PCIe add-in cards. The
//XR4 retains onboard ports specifically for Management (Mgmt) and Replication connectivity, ensuring that administrative access and array-to-array replication can still be maintained without additional hardware.
Consequently, if a customer was relying solely on the onboard ports for iSCSI traffic on their legacy //XR2 or
//XR3, the Bill of Materials (BOM) for the upgrade to //XR4 must include discrete Ethernet/iSCSI PCIe cards to migrate those connections. Failure to identify this architectural difference during the pre-upgrade inventory can result in a loss of host connectivity or an inability to cable the new controllers correctly, as the expected physical ports simply will not exist on the new chassis.
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184. Frage
What is the maximum number of SAS shelves supported for FlashArray//XL?
Antwort: B
Begründung:
The FlashArray//XL supports 0 (zero) SAS expansion shelves for permanent capacity.
* Architecture: The FlashArray//XL is architected exclusively for NVMe storage media. Its backend connectivity utilizes 100GbE RoCE (RDMA over Converged Ethernet) to connect to DirectFlash Shelves (DFS) . It does not possess the legacy SAS controllers or ports required to drive SAS expansion shelves.
* Migration Exception: While a "SAS Swing Shelf" (containing legacy SSDs from an older array) might be temporarily attached during a specific Data-in-Place upgrade migration scenario, this is a transient state. In terms of supported operational configuration for storage capacity, the limit is zero. The platform relies entirely on DirectFlash Modules in the chassis and external DirectFlash Shelves.
* Contrast: Older generations (FlashArray//M, FlashArray//X R1/R2) supported SAS shelves, but the
//XL platform eliminates this protocol entirely in favor of end-to-end NVMe.
185. Frage
Upon completion of a hardware upgrade activity, which command should be used to unset the maintenance tag?
Antwort: C
Begründung:
Upon verifying that a hardware upgrade is successfully completed and the system is stable, the command to remove the maintenance suppression is purealert untag --maintenance.
During upgrade activities, engineers often apply a "maintenance" tag or flag to the alert system to prevent the generation of "noise" (false positive alerts) that would otherwise be triggered by expected events like controller failovers, link downs, or path fluctuations. This suppression ensures that the customer and Pure Support are not flooded with critical tickets for planned work.
Once the work is done, it is critical to remove this suppression so the array resumes normal monitoring. The purealert command with the untag verb and the specific --maintenance flag is the correct syntax to clear this state. Options A and C use invalid syntax (--cancel or --unset) that is not recognized by the Purity CLI for this specific alert management function. Failing to run this command leaves the array in a state where genuine failures might be masked, violating the "Always-On" monitoring standard.
186. Frage
A data pack has been installed and the puredrive list command shows the drives in "unadmitted" status. Which command should be used to complete the admission?
Antwort: C
Begründung:
The puredrive admit command is used to complete the admission process for drives showing as "unadmitted," integrating them fully into the FlashArray.
187. Frage
An Implementation Engineer is installing the first DirectFlash Shelf (DFS) on a FlashArray//XR4 controller. Which ports should the Implementation Engineer use for the connection?
Antwort: C
Begründung:
The FlashArray//XR4 utilizes onboard 100GbE RoCE (RDMA over Converged Ethernet) ports for connecting to the first loop of DirectFlash Shelves, removing the need for dedicated PCIe add-in cards for the base configuration. The port mapping for these onboard backend ports differs from previous generations.
On the //XR4 controller chassis, the specific Ethernet interfaces designated for the first DirectFlash Shelf loop are typically the high-numbered onboard ports. In this specific exam context and hardware revision, ETH 18 and ETH 19 are identified as the correct primary backend connectivity ports .
Implementation Engineers must connect the QSFP28 cables from the "uplink" ports on the first shelf (IOM0 and IOM1) to ETH18 and ETH19 on the controllers (CT0 and CT1) respectively. Using incorrect ports (like ETH0/1, which are management) would result in the shelf not being detected by the storage fabric.
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188. Frage
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