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| Certification Vendor: | Pure Storage |
|---|---|
| Exam Name: | Pure Certified FlashArray Storage Professional |
| Exam Number: | FlashArray-Storage-Professional |
| Exam Duration: | 120 minutes |
| Available Languages: | English |
| Certificate Validity Period: | Typically 2 years |
| Related Certifications: | Pure Certified FlashArray Implementation Specialist Pure Certified Data Storage Associate Pure Certified FlashBlade Storage Professional |
| Exam Format: | Scenario-based questions, Multiple-choice |
| Real Exam Qty: | 60 scored questions + 10–15 unscored questions |
| Recommended Training: | Pure Storage Academy (FlashArray learning path) |
| Exam Registration: | Pure Storage Certification Portal |
| Sample Questions: | Pure Storage FlashArray-Storage-Professional Sample Questions |
| Exam Way: | Online proctored exam |
| Pre Condition: | Recommended 12–24 months of enterprise storage experience; familiarity with FlashArray administration preferred |
| Official Syllabus URL: | https://www.purestorage.com/services/certifications/flasharray-storage-professional.html |
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NEW QUESTION # 74
A FlashArray//XL is used for NVMe-RoCE services. The array has been lightly loaded and has performed as expected. A new workload has been added to the array, which is within the array's performance envelope. The change has resulted in extreme latency and service outages for all workloads utilizing NVMe-RoCE.
Which misconfiguration is this a symptom of?
Answer: A
Explanation:
Requirement for Lossless Ethernet: NVMe over RoCE (RDMA over Converged Ethernet) requires a lossless fabric to function correctly. Unlike standard iSCSI which uses TCP for error recovery, RoCE assumes the network will not drop packets. If the network is "lossy," performance degrades significantly.
The Role of PFC: Priority Flow Control (PFC) (IEEE 802.1Qbb) is the specific mechanism used in Data Center Bridging (DCB) to provide flow control on a per-priority basis. It allows the switch to send a "pause" frame to the sender when buffers are full, preventing packet drops.
Symptom Analysis: In the scenario provided, the array itself is not overloaded ("within the performance envelope"). However, the addition of a new workload increased traffic to the point where buffer congestion occurred. Because PFC was likely misconfigured (either on the FlashArray ports, the network switches, or the host NICs), the network dropped packets instead of pausing traffic. This leads to "go-back-N" retransmissions and massive latency spikes that affect all workloads sharing that fabric.
Pure Storage Best Practices: Pure Storage documentation for NVMe-RoCE emphasizes that PFC must be enabled and consistent across the entire path. If there is a mismatch in PFC configuration, the resulting packet loss will cause the symptoms described: extreme latency and potential service outages.
NEW QUESTION # 75
Volume space has increased on a FlashArray and shared space decreased by the same amount.
What does this indicate?
Answer: A
Explanation:
Understanding Space Reporting: To understand this behavior, you have to look at how Purity calculates capacity. Pure Storage uses a data reduction engine where data is deduplicated and compressed.
Volume Space vs. Shared Space:
Volume Space: This represents the unique data belonging to a specific volume that is not shared with any other volume via deduplication or snapshots.
Shared Space: This represents the data that is common across multiple volumes or snapshots. If you have two volumes that are clones of each other, most of that data is "Shared." The "Shift" Mechanism: When a volume is deleted (and potentially eradicated), the data it once shared with other volumes no longer needs to be "shared." Imagine Volume A and Volume B share 100GB of data. That 100GB is accounted for in Shared Space.
If you delete Volume B, that 100GB of data is now only referenced by Volume A.
Consequently, that 100GB is moved from the Shared Space bucket into Volume A's Volume Space bucket.
Net Result: The total physical space used on the array remains the same initially, but the accounting shifts. You see a decrease in Shared Space and an identical increase in the Volume Space of the remaining volumes that held those deduplication references.
NEW QUESTION # 76
A storage administrator is troubleshooting a FlashArray that is critically low on space. They have successfully deleted and eradicated a large volume, but used space keeps increasing.
What is a possible cause?
Answer: A
Explanation:
Logical vs. Physical Reclamation: When an administrator "Eradicates" a volume, the FlashArray immediately removes the logical reference to that data. However, the physical blocks are not "wiped" instantly. Instead, those blocks are marked as "eligible for reclamation" by Purity's background Garbage Collection (GC) process.
Workload Prioritization: Purity is designed to prioritize Host I/O (production performance) over background system tasks. If the array is under an extremely high workload (high Load Meter percentage), Purity will automatically throttle the Garbage Collection process to ensure the application latency remains as low as possible.
The "Reclamation Lag": If the incoming write rate from the hosts (new data being written) exceeds the speed at which the throttled GC process can reclaim space from the eradicated volume, the "Used Space" metric will continue to trend upward. This is a common scenario when arrays are pushed to their performance or capacity limits simultaneously.
Why Option A is incorrect: The 24-hour safeguard applies to Destroyed volumes (the "Pending Eradication" bucket). Once an administrator manually clicks Eradicate, that safeguard is bypassed, and the space should logically be freed. If the space is still not reflecting as "Free," it is a back-end processing delay, not a timer delay.
Why Option C is incorrect: In the Purity Operating Environment, the array does not require the host to "unmount" or "disconnect" before it can reclaim space. Once the volume is destroyed and eradicated on the array side, those blocks are gone from the array's perspective, regardless of the host's state (though the host will likely experience I/O errors).
NEW QUESTION # 77
What does an asynchronous blackout window prevent?
Answer: B
Explanation:
Definition of a Blackout Window: In Purity//FA, a Blackout Window is a scheduled period during which asynchronous replication is suspended. This is typically used by administrators to preserve WAN bandwidth during peak business hours or to prevent replication traffic from competing with high-priority local workloads (like a massive database batch job).
The "In-Progress" Rule: One of the most important characteristics of a blackout window is that it is non-disruptive to active transfers. If a replication job started at 7:55 AM and the blackout window begins at 8:00 AM, Purity will allow that specific transfer to continue until it finishes.
The Prevention Mechanism: Once the clock hits the start of the blackout window, the replication scheduler is effectively "paused." No new snapshots will be queued for transfer, and no new replication sessions will be initiated until the window expires.
Why Option A is incorrect: Purity does not kill active transfers. Abruptly stopping a transfer would waste the bandwidth already consumed and require the entire delta-set to be re-calculated or re-sent later.
Why Option B is incorrect: The phrasing is logically inconsistent; you cannot prevent something that "started before" the window from being "new" during the window.
Best Practice: When configuring blackout windows, ensure that the "clear" time (the time between windows) is long enough to allow the array to catch up on the snapshots that were queued during the blackout, otherwise, you risk triggering Alert 51 (Replication Delayed).
NEW QUESTION # 78
An administrator needs to enable Remote Assist (RA) on Purity version 6.8.4 to facilitate remote troubleshooting. Due to security restrictions, only certain commands can be executed on the array.
What type of access should the administrator grant when enabling RA?
Answer: A
Explanation:
Remote Assist (RA) Overview: Remote Assist is a secure, customer-initiated tunnel that allows Pure Storage Technical Support Engineers (TSEs) to log into a FlashArray to perform diagnostics and maintenance. It is disabled by default and must be explicitly opened by the customer.
Access Modes in Purity: In modern Purity versions (like 6.8.4), Pure Storage has introduced granular access controls for these support sessions to satisfy enterprise security and compliance requirements (such as SOC2 or HIPAA).
Restricted Access: This mode is specifically designed for high-security environments. When RA is enabled with the Restricted flag, the Support Engineer is limited to a pre-defined subset of non-destructive, read-only, or diagnostic commands. They cannot perform major configuration changes, delete data, or access sensitive metadata without further authorization.
Elevated vs. Secured: * Elevated access (often used during emergency recovery) provides the TSE with broader permissions, including the ability to run system-level scripts and configuration commands that go beyond standard diagnostics.
Secured is often a baseline state but does not imply the specific command-level filtering that "Restricted" does.
Security Best Practice: If a security team mandates that "only certain commands can be executed," Restricted is the correct administrative choice. This ensures that the principle of least privilege is applied even to the vendor's support staff.
NEW QUESTION # 79
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