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| Certification Vendor: | Pure Storage |
|---|---|
| Exam Name: | Pure Certified FlashArray Storage Professional Exam |
| Exam Number: | FlashArray-Storage-Professional |
| Real Exam Qty: | 60-75 |
| Exam Price: | $129 USD |
| Exam Duration: | 120 minutes |
| Certificate Validity Period: | 2 years |
| Exam Format: | Multiple Choice (single/multiple correct answers) |
| Related Certifications: | Pure Certified FlashArray Architect Professional Pure Certified FlashArray Implementation Professional |
| Passing Score: | 70% |
| Available Languages: | English |
| Recommended Training: | Pure Academy - FlashArray Storage Professional Prep |
| Exam Registration: | Pure Storage Certification Portal ExamStudio Registration |
| Sample Questions: | Pure Storage FlashArray-Storage-Professional Sample Questions |
| Exam Way: | Online proctored or onsite at authorized test centers |
| Pre Condition: | Recommended: 12–24 months of experience with Pure Storage FlashArray systems; no mandatory prerequisite exam |
| Official Syllabus URL: | https://www.purestorage.com/services/certifications/flasharray-storage-professional.html |
>> FlashArray-Storage-Professional Exam Lab Questions <<
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NEW QUESTION # 17
Twelve stretched pods are synchronously replicating between an ActiveCluster (AC) FlashArray pair. A new unstretched pod is created and then is stretched, but the operation fails.
What is the most likely cause of the operation not completing successfully?
Answer: C
Explanation:
ActiveCluster Scalability Limits: Pure Storage FlashArrays have specific scalability limits regarding the number of "Active" or "Stretched" pods allowed per array or ActiveCluster pair. While these limits can vary slightly based on the Purity//FA version and the specific hardware model (e.g., //X, //XL, or //m), a common architectural limit in many Purity versions is up to 12 stretched pods.
The Scenario Analysis: In this case, the environment already has 12 stretched pods successfully replicating. When the administrator attempts to stretch a 13th pod, the operation fails because the array has hit the maximum concurrent stretched pod count supported by the Purity operating environment for that configuration.
Stretched vs. Unstretched: A pod exists locally (unstretched) without consuming an ActiveCluster pod "slot" in the same way. The failure specifically occurs during the "stretch" operation, which is the point where the synchronous replication relationship and mediator monitoring are established.
Resolution: To resolve this, the administrator would either need to:
Unstretch or Eradicate an existing pod that is no longer needed to free up a slot.
Check the specific Purity Release Notes for the hardware model to see if a firmware upgrade increases the maximum pod limit (some newer versions support more, but 12 is the classic threshold often tested in professional certifications).
NEW QUESTION # 18
What is the recommended Maximum Transmission Unit (MTU) size for the replication ports on a FlashArray?
Answer: B
Explanation:
Pure Storage strongly recommends an MTU size of 9000 (Jumbo Frames) for replication networks-such as those used for Asynchronous Replication, ActiveCluster, and ActiveDR-as well as for iSCSI and NVMe/TCP data networks.
A 9000-byte MTU significantly reduces protocol overhead and CPU processing load on the storage controllers by allowing a much larger payload of data to be transmitted inside a single network packet. During heavy replication, this drastically increases throughput and maximizes bandwidth efficiency.
Here is why the other options are incorrect:
1500 (B): While 1500 bytes is the standard default MTU for Ethernet and is exactly what Pure Storage recommends for the management ports (vir0), it is not the recommended optimization for high-throughput replication traffic. (Note: If your network cannot support 9000 end-to-end, 1500 must be used to prevent packet fragmentation, but 9000 remains the best-practice recommendation).
4200 (A): This is an arbitrary number and is not a standard network MTU size used in Pure Storage environments.
NEW QUESTION # 19
Which command provides the negotiated port speed of an ethernet port?
Answer: C
Explanation:
On a Pure Storage FlashArray, Ethernet ports operate at both a physical hardware layer and a logical network configuration layer. If you need to verify the actual physical negotiated port speed of an Ethernet port (for example, verifying if a 25GbE port negotiated down to 10GbE due to switch configurations or cable limitations), you must query the hardware layer directly.
The command purehw list --all --type eth interacts directly with the physical NIC hardware components to report their true link status, health, and dynamically negotiated hardware link speed.
Here is why the other options are incorrect:
purenetwork eth list -- all (B): The purenetwork command suite is primarily focused on the logical Layer 2/Layer 3 networking stack. It is used to configure and list IP addresses, subnet masks, MTU sizes (Jumbo Frames), and routing, rather than focusing on the physical hardware negotiation details of the NIC itself.
pureport list (A): The pureport command suite is specifically used for managing and viewing storage protocol target ports. An administrator would use this to list the array's Fibre Channel WWNs or iSCSI IQNs to configure host zoning or initiator connections, not to verify Ethernet link negotiation speeds.
NEW QUESTION # 20
What is the best practice for configuring VMFS UNMAP for ESXi 6.7 or later?
Answer: C
Explanation:
What is UNMAP?: UNMAP (SCSI command 0x42) is the mechanism that allows a host (like ESXi) to inform the storage array that specific blocks of data are no longer in use (e.g., after a VM is deleted or moved). This is critical for Pure Storage because it allows the array to reclaim that space and maintain high data reduction ratios.
Evolution in ESXi: In versions prior to 6.5, UNMAP was a manual process executed via the CLI. Starting with ESXi 6.7, VMware introduced Automatic Space Reclamation, which runs in the background.
The Pure Storage Recommendation: Pure Storage recommends setting the reclamation priority to Auto with Low Priority.
Low Priority: This ensures that the UNMAP commands are sent to the FlashArray at a steady, manageable rate (roughly up to 25 MB/s to 100 MB/s depending on the Purity version). Because FlashArrays are built on a high-performance metadata engine, "Low Priority" is more than sufficient to keep up with even high-churn environments without causing any contention for active application I/O.
Why avoid High Priority (Option B)?: Setting it to high priority or using a fixed high-burst rate can lead to "bursty" SCSI traffic. While the FlashArray can handle the load, it is considered a best practice to keep background maintenance tasks like space reclamation at a lower priority to ensure the "Big Three" (latency, bandwidth, IOPS) for production workloads remain optimized.
Verification: You can verify that UNMAP is working by looking at the Data Reduction metrics in the Purity GUI or Pure1. If the "Thin Provisioning" or "Reclaimed" numbers are increasing after file deletions, the host is correctly communicating its freed space to the array.
NEW QUESTION # 21
In reviewing space metrics via the Pure Management GUI, a storage manager notices the total reduction rate is much higher than the Data Reduction Rate (DRR).
What is the reason for this?
Answer: B
Explanation:
Understanding Data Reduction Rate (DRR): DRR is a measure of the effectiveness of Purity's deduplication and compression algorithms. It compares the amount of data written by the host to the amount of physical space actually occupied on the flash media after these processes have occurred.
Calculation: $\text{DRR} = (\text{Deduplication} \times \text{Compression})$.
Understanding Total Reduction: The Total Reduction metric is a broader "efficiency" value. It represents the ratio of the Total Provisioned (logical) space to the Physical space used.
The "Thin Provisioning" Factor: The primary difference between these two numbers is Thin Provisioning.
FlashArrays are 100% thin-provisioned by default. If a customer creates a 100TB volume but the host only writes 1TB of data, the "Total Reduction" will be massive because it counts all that unwritten, "virtual" space as "saved." The DRR, however, only looks at the 1TB that was actually written and calculates how well it was compressed and deduped.
Why Option C is incorrect: Both metrics generally account for the efficiency of snapshots. However, snapshots contribute to DRR through deduplication (since they share blocks with the source volume). The massive gap between DRR and Total Reduction is almost always mathematically attributed to the "unwritten" space provided by thin provisioning.
Key Takeaway: If your DRR is 5-to-1 but your Total Reduction is 50-to-1, it means your data is compressing/deduping well, but you have also provisioned a significant amount of volume space that hasn't been written to yet.
NEW QUESTION # 22
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