FAIS FlashArray-Implementation-Specialist Exam Dumps

The FlashArray//XL chassis is designed with specific PCIe lane allocations to support high-performance host I/O and backend connectivity. The 4-Port Fibre Channel (FC) cards are high-bandwidth devices that require x16 PCIe lanes to function at full line rate without oversubscription.

In the FlashArray//XL architecture, PCIe slots 3 and 8 are designated x16 slots capable of supporting these dense 4-port host interface cards. Other slots, such as slot 5 or slot 2, may be x8 slots or reserved for other functions (like the backend SAS/Ethernet fabric or offload engines like the DCA), and thus may not physically accept or electrically support the 4-port card variant.

Implementation Engineers must adhere strictly to the slot map provided in the hardware guide. Installing a 4-port card into an unsupported slot (like an x8 slot) could lead to the card not training, the array failing to boot, or the card operating at reduced bandwidth, severely impacting host performance. Verifying the BOM and slot map for Slots 3 and 8 ensures the correct electrical and thermal environment for these critical host-facing components.

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When performing a standard installation on a FlashArray, the first logical configuration step is the CT0 configuration (typically via the puresetup utility on the primary controller).

Workflow: After the physical rack-and-stack, cabling, and power-on, the Implementation Engineer must establish a management connection to the array. This is done by connecting to the serial console or the default IP of Controller 0 (CT0) .

Initialization: The puresetup process on CT0 initializes the system, sets the management IP addresses (VIP, CT0, CT1), and configures the gateway/DNS. This step effectively "builds" the array cluster.

Why not C? While ensuring the array is on the target code version is critical, a "Code Upgrade" is typically performed after the array is initialized and network-accessible (or via the Pure1 SSU workflow). The only exception is a manual USB re-image for a factory reset, but the standard installation procedure defines Configuration/Initialization as the primary step to bring the system online. Configuration of CT1 (Option B) happens automatically as part of the cluster creation initiated from CT0.

The FlashArray//X20 R4 operates with a minimum AC voltage input of approximately 90 VAC .

The FlashArray//X series (specifically the entry-to-mid-range models like the X10, X20, and X50) utilizes high-efficiency Power Supply Units (PSUs) designed with auto-ranging capabilities. These PSUs conform to standard global power infrastructure requirements, supporting a nominal input range of 100V to 240V AC (50/60 Hz).

Low-Line Support: Because the X20 is an entry-level enterprise array often deployed in diverse environments (including edge locations or standard office server rooms), it fully supports "low-line" power (100-120V nominal). The technical minimum tolerance for these power supplies typically extends down to 90 VAC to account for voltage sags or fluctuations.

Contrast with High-End: Larger, higher-density systems like the FlashArray//XL or fully loaded high-performance chassis configurations often require "high-line" power (200V-240V) to deliver sufficient wattage efficiently. However, the X20 R4 does not have this restriction. Therefore, Option A (90V) represents the correct minimum floor, whereas Options B and C represent high-line voltages that are supported but not required for minimum operation.

This question addresses the distinction between the newer "Distributed NVRAM" architecture (DFMDs) and the "Dedicated NVRAM" architecture (using separate NVRAM modules in NVB slots).

If a FlashArray model is using standard DFMs (DirectFlash Modules that contain only flash storage and no onboard NVRAM), the system must rely on dedicated NVRAM modules installed in the chassis to handle the write cache. As established in the hardware architecture for these generations (such as the //X R2/R3), the base requirement for system quorum and redundancy is a mirrored pair of NVRAM cards.

These cards are always populated in NVB0 and NVB1 . This ensures that even the smallest supported configuration has a redundant write buffer.

NVB0 and NVB1 are the primary slots wired for this purpose on the midplane.

Populating non-contiguous slots like NVB0 and NVB3 or NVB0 and NVB2 would be an invalid configuration, likely preventing the array from booting or properly mirroring the write cache data between the modules.

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