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| Section | Weight | Objectives |
|---|---|---|
| Pre-Installation / Pre-Upgrade | 25% | - Hardware and software compatibility verification - Planning and preparation steps - Environment and configuration prerequisites |
| Installation | 23% | - Physical installation procedures - System initialization and configuration - Network and storage setup |
| Post-Installation / Post-Upgrade | 20% | - Troubleshooting and issue resolution - Configuration optimization - Validation and verification procedures |
| Upgrades | 32% | - Controller and shelf upgrades - Purity version interoperability - Non-disruptive upgrades (NDU) - Firmware and component updates |
>> FlashArray-Implementation-Specialist Antworten <<
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166. 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.
167. Frage
Prior to running the puresetup newarray command, which command should an Installation Engineer run on a new install of an //XR4 array?
Antwort: B
Begründung:
On a new FlashArray//XR4 installation, the Implementation Engineer must run the cobalt_check.py script before executing puresetup newarray.
The FlashArray//XR4 represents a significant hardware architectural shift (internally codenamed or associated with the "Cobalt" platform generation). This platform introduces new PCIe layouts, NVMe backplanes, and controller components that require specific validation beyond the standard legacy checks. The cobalt_check.
py script is a specialized hardware diagnostic tool pre-loaded on the manufacturing image of //XR4 controllers.
Its purpose is to verify that the specific hardware components of the R4 platform-such as the status of the internal NVMe interconnects, the correct population of the chassis, and the health of the new controller mainboard-are functioning within strict tolerances. Running this check ensures that the physical layer is
100% healthy before the Purity operating system attempts to initialize the database and claim the storage media. Option A (pureboot list) checks boot versions but not hardware health, and Option C (purehw list) is a general command that might not catch the specific low-level architectural issues the cobalt_check.py script is designed to identify on this specific generation.
168. Frage
An Implementation Engineer performs a controller upgrade. What command should the Implementation Engineer run to check I/O health?
Antwort: D
Begründung:
During a Hardware Non-Disruptive Upgrade (HWNDU), such as a controller swap, ensuring that the frontend host multi-pathing is perfectly healthy before taking a node offline is the single most critical safety check. If an Implementation Engineer initiates a failover while host I/O is unbalanced or single-pathed, it will cause an immediate All-Paths-Down (APD) event and crash the customer's applications.
While standard commands like pureport list --initiator are excellent for verifying that the physical fibre channel or iSCSI links are logged in, they do not confirm that data is actively flowing across them. To truly validate I/O health and multipath distribution, the engineer must run the purehost monitor --balance command.
This specialized CLI tool forces the FlashArray to take a brief, active sample of incoming read and write commands (defaulting to a 5-second interval) across all host initiators. It calculates the traffic distribution and displays the relative percentage of I/Os for each initiator path. A well-balanced, healthy host utilizing proper MPIO policies (like VMware's Round Robin) will show traffic evenly distributed across all available paths within a few percentage points. If the output reveals that 100% of the traffic is pinned to a single controller's port, the engineer immediately knows there is a zoning or host-side MPIO misconfiguration that must be resolved before proceeding with the upgrade.
169. Frage
A customer's management network connectivity is NOT available at the time of array deployment. Which switch should an Implementation Engineer use to avoid those checks during puresetup flow?
Antwort: B
Begründung:
The puresetup initialization script automatically runs a series of network validation tests to ensure the array can reach default gateways, DNS servers, and Pure1. If the management network is not yet live or is air-gapped during the install, these tests will fail, potentially blocking the setup process.
To proceed with the initialization despite the missing network, the Implementation Engineer must append the --skip-management-connectivity-tests flag to the puresetup command.
This flag instructs the script to bypass the ping/DNS lookup checks on the management interface.
It allows the engineer to complete the array initialization (naming, IP assignment) so the array is "up" and ready for local config, with the understanding that full management connectivity will be established and verified later.
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170. Frage
What is the speed of the Ethernet ports to connect a FlashArray //E to a DFS?
Antwort: A
Begründung:
The FlashArray//E connects to its DirectFlash Shelves (DFS) using 25Gb Ethernet (RoCE).
The FlashArray//E is the "Capacity Optimized" member of the FlashArray family, designed to replace spinning disk repositories with all-flash efficiency. While the high-performance FlashArray//XL utilizes 100GbE for its backend NVMe-oF connectivity to maximize throughput for mission-critical databases, the //E prioritizes cost-efficiency, density, and power consumption.
Architecture: To maintain this efficiency balance, the backend connectivity for expansion shelves on the //E platform is standardized on 25GbE. This provides ample bandwidth for the QLC-based workloads (typically unstructured data, repository, or Tier 2 block) without the higher cost and power draw of 100GbE optics and controllers.
Comparison: Option A (40G) is a legacy QSFP standard not used in modern Pure backend designs. Option C (100G) is reserved for the performance-tier //XL and high-end //X models.
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171. Frage
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