Pure Storage FlashArray-Storage-Professional Exam With Confidence Using Practice Dumps

Zoning Best Practices: In a Fibre Channel SAN environment, zoning is used to partition the fabric to ensure that initiators (hosts) can only see the targets (FlashArray ports) they are intended to communicate with.

The " Single Initiator " Rule: Pure Storage, following industry-standard SAN best practices (and Cisco/Brocade recommendations), strongly advises using Single Initiator Zoning . This means each zone should contain exactly one initiator (HBA port) and one or more targets (FlashArray ports) .

Why Single Initiator to Multiple Targets (Option B)?:

Isolation: This prevents " Initiator-to-Initiator " communication. If multiple initiators are in the same zone, they may attempt to communicate with or probe each other (Registered State Change Notifications - RSCNs), which can cause host instability, driver timeouts, or discovery issues.

Troubleshooting: It simplifies troubleshooting. If a port is experiencing CRC errors or flapping, the impact is isolated to that specific host ' s zone rather than affecting a broad " group " zone.

Efficiency: When a target port changes state (e.g., during a controller reboot), the switch sends an RSCN. In a single-initiator zone, only that specific host is notified. In a multi-initiator zone, every host in the zone is interrupted to process the notification, even if they aren ' t using the port that changed.

Target Selection: While the zone should have only one initiator, it can (and should) include multiple target ports from the FlashArray (usually one port from CT0 and one from CT1 for the same fabric) to provide path redundancy and allow the host ' s MPIO software to manage failover.

On a Pure Storage FlashArray, " System Space " is a specific GUI-reported metric. Purity has a predefined, hidden internal space budget—typically around 20% of the raw mapped capacity (which would be 2TB on a 10TB array)—reserved for internal array operations. This budget covers RAID/parity overhead, metadata, and reclaimable space (data from deleted volumes, snapshots, or overwritten blocks that are waiting for the backend garbage collection process to fully erase them from the flash chips).

Normally, this internal overhead stays below the 20% budget, and " System Space " displays as 0.00 in the GUI. However, if an administrator deletes a massive amount of data at once, causing the reclaimable space to exceed that 2TB budget, the overflow is prominently displayed in the GUI as " System Space. "

Here is why the other options are incorrect:

Virtual machines have not yet issued an unmap command (A): If a VMware VM deletes a file but the OS hasn ' t issued an UNMAP/TRIM command, the FlashArray is completely unaware that the data was deleted. Therefore, the array continues to report that capacity as standard Volume Space , not System Space.

More than 2TB of volume snapshots were destroyed (C): While destroying snapshots leads to reclaimable space, " reclaimable space " (Option B) is the specific, correct Purity architectural term and metric that the system uses to calculate the internal budget threshold.

In Pure1, the ability to simulate snapshot policies—particularly when assessing the capacity requirements and impact of enabling SafeMode—heavily relies on historical telemetry data. Pure1 uses the data from existing snapshots on the FlashArray to calculate the environment ' s daily data change rate, as well as the deduplication and compression ratios specific to those workloads.

By analyzing the footprint of existing snapshots, Pure1 ' s analytics engine can accurately project the future storage capacity required if you were to change your snapshot frequency or extend the retention period (for example, locking them down for 7 to 30 days under a SafeMode policy). If a FlashArray does not have any existing snapshots, Pure1 lacks the foundational baseline metrics needed to simulate and forecast the capacity impact of a proposed snapshot policy.