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| Section | Objectives |
|---|---|
| FlashArray Architecture and Core Concepts | - FlashArray hardware and architecture overview
|
| Data Protection and Availability | - Snapshot and protection strategies
|
| Installation and Initial Configuration | - System setup
|
| Monitoring, Performance, and Troubleshooting | - System monitoring
|
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NEW QUESTION # 105
An Implementation Engineer is onsite to install a new DFM data pack (DP) to CH0.BAY10-CH0.BAY19 of a FlashArray.
After adding the drives to the chassis, which command should the Implementation Engineer run to verify if the new DP is in a wide write group?
Answer: A
Explanation:
The puredrive list --pack command shows detailed information about the specified data pack, including whether its drives are part of a wide write group.
NEW QUESTION # 106
An Implementation Engineer is beginning a controller upgrade. Which command should be run to stop Purity?
Answer: C
Explanation:
To safely stop the Purity operating environment on a specific controller during a physical controller upgrade (such as upgrading from FlashArray//X to //XL or performing a chassis swap), the correct command is pureadm stop.
This command is a system administration utility located in the Linux shell of the controller (accessible via the puresh prompt when logged into the specific controller's physical IP address). It is designed to stop the local Purity services on the node where the command is executed.
Procedure: In a non-disruptive controller upgrade, the engineer manually fails over primary services to the peer controller. Then, they log into the controller designated for removal (e.g., CT0) and run pureadm stop. This ensures that all Purity processes, I/O handling, and cache operations are cleanly terminated and flushed before the hardware is physically powered down or removed.
Syntax: The pureadm tool generally operates on the local instance. Options B and C utilize invalid flags (--secondary or --controller) for this specific command context. The engineer must be physically logged into the target controller to execute the stop command for that node.
NEW QUESTION # 107
Which PCIe slot must be used for a SAS HBA on R4B revision controllers?
Answer: B
Explanation:
While modern FlashArrays (like the XR4 and XL series) primarily use NVMe-oF/RoCE for backend connectivity, specific configurations or legacy support scenarios may still require a SAS HBA (Serial Attached SCSI Host Bus Adapter), for example, when connecting to older SAS-based expansion shelves during a migration or hybrid configuration.
For R4B revision controllers (a specific hardware revision of the Gen 4 controller), the strict hardware addressing map requires that any SAS HBA be installed in PCIe Slot 1.
Slot 1 provides the specific PCIe lane routing and BIOS interrupts required for the legacy SAS controller to be recognized and function without conflicting with the native NVMe fabric.
Installing the card in Slot 0 (typically reserved for RoCE/Ethernet backend) or Slot 4 would likely result in the card being ignored by Purity or causing boot errors due to resource conflict.
NEW QUESTION # 108
When transforming an array from SAS to NVMe with the Evergeen XFORM upgrade, when should a swing shelf be installed?
Answer: B
Explanation:
A swing shelf is installed during the SAS to NVMe Evergreen XFORM upgrade only if the array lacks enough free capacity to evacuate data packs, enabling safe data migration during transformation.
NEW QUESTION # 109
Which PCI cards must be validated on the Bill of Materials (BOM) to allow an Implementation Engineer to attach a DirectFlash Shelf to a FlashArray//XL130R5?
Answer: C
Explanation:
The FlashArray//XL series (such as the XL130R5) utilizes a modern backend connectivity architecture for its expansion shelves, specifically the DirectFlash Shelf (DFS). Unlike older generations that might have used SAS (Serial Attached SCSI) for shelf connectivity, the //XL architecture relies on high-speed Ethernet with RoCE (RDMA over Converged Ethernet) to communicate with external media shelves. This ensures that the NVMe drives in the shelf perform with the same low latency as those in the head unit.
To attach a DirectFlash Shelf to a FlashArray//XL130R5, the chassis must be populated with specific PCIe interface cards designated for shelf back-end connectivity. The correct part for this is the FA-XL-100G Ethernet/RoCE 2-Port card. This card provides the necessary 100 Gigabit Ethernet bandwidth and RoCE protocol support required for the NVMe-oF (NVMe over Fabrics) backend fabric that Pure Storage uses.
It is crucial to distinguish this from host-facing cards. While an "iSCSI/RoCE" card exists, the shelf connectivity specifically utilizes the "Ethernet/RoCE" designation in the BOM to differentiate backend fabric ports from frontend host ports. The 200G options are generally reserved for host connectivity or inter-array clustering in specific high-performance setups, but the standard validated card for connecting the DFS to the
//XL130R5 is the 100G Ethernet/RoCE adapter. Verifying this line item on the BOM prevents onsite delays where the engineer might otherwise find themselves with incompatible ports for the expansion shelves.
NEW QUESTION # 110
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