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| Section | Objectives |
|---|---|
| Topic 1: FlashArray Architecture and Core Concepts | - FlashArray hardware and architecture overview
|
| Topic 2: Installation and Initial Configuration | - System setup
|
| Topic 3: Monitoring, Performance, and Troubleshooting | - Troubleshooting
|
| Topic 4: Data Protection and Availability | - Replication
|
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44. Frage
An Implementation Engineer performing an inventory of hardware for an NDU from an FlashArray//X70R2 to an FlashArray //X90R3 and discovers a complete FlashArray//X90R3 was shipped in place of an NDU kit.
What is the minimum hardware the Implementation Engineer should use from this array to complete the NDU?
Antwort: C
Begründung:
To complete the Non-Disruptive Upgrade (NDU) from an //X70R2 to an //X90R3 using a fully shipped array, the Implementation Engineer must extract and use the Controllers and NVRAM modules .
* Stateless Architecture: The FlashArray upgrade philosophy allows the chassis and data drives (Data Packs) to remain in place while the compute (controllers) and cache (NVRAM) are swapped.
* Component Compatibility:
* Controllers: The X90R3 controllers provide the upgraded CPU/performance required.
* NVRAM: The NVRAM modules (located in the chassis front or rear slots depending on generation, but logically paired with controller performance) often differ between generations (R2 vs. R3) and performance tiers (70 vs. 90). The X70R2 NVRAM modules are typically not compatible with X90R3 controllers. Therefore, the engineer must swap the NVRAM modules along with the controllers to ensure the write cache is recognized.
* Power Supplies: Both the X70R2 and X90R3 utilize the same high-capacity 1600W Power Supply Units . Unless the existing PSUs are faulty, they do not technically need to be swapped for the system to function, making "Controller and NVRAM" the precise minimum requirement for the logic upgrade.
45. Frage
An Implementation Engineer is assigned to install a 4X Module 9.1 TB Conversation Kit in a Flash Array Chassis. Why are there only four Direct Flash Modules?
Antwort: A
Begründung:
Installing four DirectFlash Modules in a 9.1 TB Conversion Kit is intended to widen an existing write group, improving performance and capacity distribution within the FlashArray.
46. Frage
When configuring File Services, which service type must be assigned to the virtual network interface in the purenetwork configuration?
Antwort: C
Begründung:
Modern Pure Storage FlashArrays support unified block and file storage directly out of the box (often referred to as FA File). To utilize file protocols like SMB or NFS on the array, the Implementation Engineer must properly configure the networking interfaces to handle file-specific traffic.
Purity handles network traffic routing by assigning specific "services" to its Ethernet interfaces or Virtual Interfaces (VIFs). When creating or modifying a virtual network interface using the purenetwork CLI suite (or via the GUI), the engineer must explicitly define what type of traffic is allowed to traverse that interface.
To configure a subnet and virtual interface dedicated to File Services, the --service flag must be set to file. For example, a common command structure would look like:
purenetwork setattr --service file < interface_name >
Assigning the iSCSI service would strictly format the port to listen for block-level SCSI commands over TCP
/IP, Replication would reserve the port for array-to-array snapshot transfers or ActiveCluster traffic, and Management would restrict the port to GUI/CLI administrative access. Only the file service type enables the necessary protocol daemons to export NFS shares and SMB directories out of that specific network port.
47. Frage
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?
Antwort: D
Begründung:
When expanding a Pure Storage FlashArray//XL130 R5 with an external DirectFlash Shelf (DFS), the backend connection between the shelf controllers and the main chassis relies on massive 100GbE bandwidth via the NVMe-oF (RoCE) protocol. Validating the Bill of Materials (BOM) before an onsite installation is a critical preparatory step to ensure the correct internal hardware was shipped to support this connection.
According to the official Pure Storage hardware matrix, the supported PCIe expansion card required for //XL series shelf connectivity is the FA-XL-100G Ethernet/RoCE 2-Port CX6 . This card utilizes the modern Mellanox/Nvidia ConnectX-6 (CX6) chipset, which is explicitly engineered to provide the necessary 100GbE RDMA capabilities to maintain ultra-low latency, NVMe-level speeds across the external storage fabric.
Option B (the CONNECTX-5 card) is an older, End-of-Sale component generally associated with legacy deployments or specific frontend iSCSI requirements, not the modern //XL backend loop. Option C (a 200G CX7 card) is not the standard validated BOM component for a single DFS loop on an //XL130 R5.
Confirming the presence of the 100G CX6 card ensures the engineer has the exact hardware required to successfully cable the 100GbE backend ports.
48. Frage
What is the maximum number of DirectFlash Shelves supported for FlashArray//XL?
Antwort: B
Begründung:
The FlashArray//XL supports up to four DirectFlash Shelves (DFS), each providing up to 1.9PB of effective capacity, enabling a total effective capacity of up to 7.6PB when fully expanded.
49. Frage
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