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>> FlashArray-Implementation-Specialist認定試験 <<
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質問 # 110
After an Implementation Engineer installs a new FlashArray and runs health checks, they see that Phonehome and Remote Assist are NOT working correctly. Which outbound port needs to be open for all management ports (physical and virtual)?
正解:B
解説:
For PhoneHome (telemetry) and Remote Assist (support tunnels) to function correctly, TCP Port 443 (HTTPS) must be open for outbound traffic from all management ports (CT0.ETH0, CT1.ETH0, and the Virtual Management IP).
Pure Storage utilizes a secure, encrypted connection to communicate with the Pure1 Cloud and Support infrastructure.
* PhoneHome: The array sends logs and heartbeat data to purestorage.com (and associated subdomains) via HTTPS over Port 443. If this port is blocked, the array cannot report its health status, preventing proactive support.
* Remote Assist: This feature creates a reverse SSH tunnel encapsulated over HTTPS (websocket or similar secure transport) to allow Pure Support to remotely log in. It initiates the connection outbound to the support relay servers on Port 443.
Option A (Port 80) is generally not used for secure management traffic in modern configurations, often only serving as a redirect. Option C (Port 123) is required for NTP (Network Time Protocol) synchronization, which is critical for logs but is not the transport port for the PhoneHome/Remote Assist data stream itself.
Therefore, verifying firewall rules for Port 443 is the primary troubleshooting step.
質問 # 111
If a Technical Support Engineer (TSE) is not available to perform health checks after an installation, what action should the Implementation Engineer take?
正解:C
解説:
If a Pure Storage Technical Support Engineer (TSE) is unavailable to immediately perform the remote health checks upon the completion of the physical installation, the correct procedure is to verify that Remote Assist (RA) is enabled and update the support case with this information.
Standard operating procedure dictates that the Implementation Engineer must not close the install case until the array has been health-checked and verified by Support. Closing the case (Option B) would signal that the work is complete when the critical validation step is missing, potentially leaving the customer with an unverified system. Emailing the account team (Option A) is helpful for visibility but does not advance the technical workflow required to close the loop.
By confirming RA is open (using purearray remoteassist) and documenting the active session port in the case notes, the Implementation Engineer enables the Support team to perform the health checks asynchronously as soon as a TSE becomes available. This ensures the "handshake" between the onsite engineer and the remote support team is maintained without delaying the engineer's departure from the site, while guaranteeing the array will be validated before final sign-off.
質問 # 112
Which command should the Implementation Engineer use to easily verify connectivity to Pure1 from a FlashArray?
正解:B
解説:
After configuring the management network and proxy settings, it is essential to validate that the FlashArray can successfully transmit logs and telemetry to the Pure1 cloud. The specific command designed to trigger a manual test of this "Phone Home" functionality is purearray phonehome test.
purearray phonehome test: Initiates a test cycle where the array attempts to resolve the Pure1 endpoint, establish a secure connection, and send a sample payload. Success here confirms that DNS, firewall rules, and proxy settings are correct for outbound telemetry.
puresupport phonehome: This is often used to manually send logs (e.g., puresupport phonehome --send), but the test syntax is specifically under purearray.
purearray test pinghome: This is not a valid standard command for this specific validation.
Using the correct command ensures the engineer receives a clear "Success" or "Failure" message to sign off on the installation checklist.
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質問 # 113
After racking a new FlashArray with one data pack, how should DirectFlash modules be installed?
正解:C
解説:
Proper airflow and thermal management are critical for the reliability of high-density storage arrays. FlashArray chassis are designed with specific airflow baffles and cooling zones that rely on the drive bays being populated in a specific order.
When installing a new FlashArray with a single data pack (typically 10 drives), the Implementation Engineer must install the DirectFlash Modules starting in bay 0, filling from left to right.
Bay 0 is typically the leftmost slot (when facing the front of the array).
Filling slots 0-9 ensures that the first "cooling zone" is properly pressurized, forcing air through the populated modules and the chassis midplane correctly.
Leaving gaps (e.g., installing in slots 10-19 while 0-9 are empty) can disrupt the airflow path, potentially leading to hotspots or inefficient cooling for the controllers behind the backplane.
Additionally, the software enumeration of drives often expects contiguous population starting from the lowest index for logical clarity, though cooling is the primary physical constraint.
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質問 # 114
How many power connections are required for the FlashArray//XL chassis?
正解:C
解説:
Understanding the physical power requirements of the Pure Storage FlashArray//XL is critical during the site planning and rack-and-stack phases of an installation. Unlike the standard 3U FlashArray//X or //C models, which operate on two power supplies (one per controller for standard 1+1 redundancy), the FlashArray//XL represents a significant leap in compute density and power consumption.
Housed in a massive 5U chassis, the //XL architecture features highly powerful multi-core Intel processors, expansive memory footprints, and a dense PCIe Gen 4 topology to support massive NVMe-oF backend scaling. To safely deliver and distribute the necessary wattage to these components while maintaining enterprise-grade high availability, the //XL chassis is equipped with four dedicated Power Supply Units (PSUs).
During physical installation, the Implementation Engineer must connect all four C20 power receptacles to the rack's Power Distribution Units (PDUs). Best practices mandate that these four connections are split across separate PDUs (e.g., PSUs 0 and 2 on PDU A, and PSUs 1 and 3 on PDU B) to ensure N+N power redundancy. Attempting to power the //XL chassis with only two connections will trigger severe hardware fault alerts within Purity and may prevent the array from drawing enough power to safely initialize both controllers and the 40 front-loading DirectFlash Module with Distributed NVRAM (DFMD) slots.
質問 # 115
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