Pure Storage Updated FlashArray-Implementation-Specialist Exam Questions and Answers by serenity

During a controller upgrade (e.g., //X to //XL), the puresetup script attempts to migrate network configurations from the old controller's ports to the new controller's ports. If the script detects that certain ports configured on the source array are physically missing or "link down" on the target array, it halts to prevent a configuration mismatch that could cause a service outage.

The error message explicitly lists the affected ports. The correct resolution path is to:

Identify the services:Determine if the missing ports are critical (e.g., a replication link that hasn't been cabled yet) or non-critical (e.g., an unused interface).

Re-run with override:Execute the puresetup command again, this time appending the specific flags or arguments (often suggested in the error output or upgrade guide) to explicitly acknowledge and include those affected ports. This tells the script, "I know these ports are down/missing; proceed with the migration anyway."

This allows the upgrade logic to complete the configuration transfer so the new controller can boot, after which the engineer can physically troubleshoot the link status.

=========

To expand a FlashArray//X10 from a5/5(fully populated chassis with two 5TB equivalent packs) to an11/11(two 11TB equivalent packs) configuration, the correct action is toinstall a swing shelf with loan capacity.

The Constraint:The "5/5" notation implies the chassis slots are already occupied by the existing media. Since the customer isreplacingthe existing packs with larger ones (Capacity Consolidation) rather than just adding new ones, the engineer needs a place to put the data during the swap.

Why Swing Shelf:The FlashArray//X10 chassis has limited slots. You cannot simply pull a pack (Option A) if the remaining pack doesn't have enough free space to hold all the data (which is typical in upgrade scenarios). ASwing Shelf(temporary external SAS or NVMe shelf provided by Pure) is attached to the array. The data is evacuated from the internal drives to this shelf. Once the internal slots are empty, the new 11TB packs are installed. The data is then moved back from the shelf to the new packs, and the shelf is removed.

TheFlashArray//XLrequires4 x C19/C20power cables to connect to the rack Power Distribution Units (PDUs).

The FlashArray//XL chassis (5U) is significantly larger and draws more power than the standard FlashArray//X series (3U). It is equipped with four high-capacity Power Supply Units (PSUs) to support the increased thermal and electrical load of the dense DirectFlash Modules and high-performance controllers.

Connector Type:To handle the higher amperage safely, the //XL utilizesIEC C20inlets on the chassis side (rectangular with horizontal pins) rather than the standard C14 inlets found on most servers. Consequently, the required cables must have aC19connector (female) to plug into the array and aC20connector (male) to plug into the PDU (assuming a high-power PDU).

Quantity:Since the chassis has four PSUs for N+2 redundancy, four distinct cables are required. The standard C13/C14 cables (Option A/B) used for lower-wattage IT equipment are physically incompatible and electrically insufficient for the //XL platform.

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 8are 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 forSlots 3 and 8ensures the correct electrical and thermal environment for these critical host-facing components.

=========