PSC PSC Networking & Host Connectivity 2

Question 1

Which NVMe-oF transport protocols does Pure Storage FlashArray support?

Accepted Answer

NVMe/TCP and NVMe/FC

Answer

FlashArray supports NVMe over Fabrics via both NVMe/TCP (over standard Ethernet) and NVMe/FC (over Fibre Channel), giving customers flexibility in transport choice.

Question 2

In NVMe-oF deployments on Pure Storage FlashArray, what concept replaces the traditional SCSI LUN for addressing storage objects?

Accepted Answer

NVMe Namespace

Answer

NVMe-oF uses namespaces (identified by namespace IDs within an NVMe subsystem) instead of SCSI LUNs to address storage objects on the target.

Question 3

What is the purpose of a Virtual IP (VIP) on a Pure Storage FlashArray iSCSI interface?

Accepted Answer

Providing a single stable IP endpoint for iSCSI targets that can float between controllers

Answer

A VIP floats between FlashArray controllers, providing a stable iSCSI target address that remains reachable even after a controller failover without reconfiguring host initiators.

Question 4

Which Pure Storage CLI command displays all registered hosts and their associated WWN/IQN initiator identifiers?

Accepted Answer

purehost list

Answer

The 'purehost list' command outputs all configured host objects with their names, WWNs (FC), IQNs (iSCSI), or NQNs (NVMe-oF) registered on the array.

Question 5

What Pure Storage recommended practice helps prevent Fibre Channel fabric congestion when connecting high-throughput FlashArray ports?

Accepted Answer

Provision adequate buffer-to-buffer credits and enforce QoS zoning policies

Answer

Pure Storage recommends configuring sufficient buffer-to-buffer credits on switch ports connected to FlashArray (which drives high bandwidth) and using QoS zoning to prevent congestion from impacting latency-sensitive workloads.

PSC - Pure Storage Certification Practice Test

PSC - Pure Storage Certification Practice Test

PSC PSC Networking & Host Connectivity 2