On aFlashArray//XR2 or //XR3controller equipped with an optional Ethernet Mezzanine (EMEZZ) card, the additional ports are enumerated asETH6, ETH7, ETH8, and ETH9.
The port numbering logic on these controllers follows a strict sequence:
ETH0 and ETH1:Fixed onboard 1GbE Management ports.
ETH2 and ETH3:Fixed onboard 10/25GbE ports (often used for replication or iSCSI).
ETH4 and ETH5:Reserved or used by the first PCIe slot expansion (if populated with Ethernet).
ETH6 through ETH9:Assigned to theEthernet Mezzanine (EMEZZ)slot.
The EMEZZ is a specific internal slot distinct from the standard PCIe risers. When populated, the Purity operating system reserves the eth6–eth9 block for these interfaces. Options B and C are incorrect because they describe port ranges that would typically be assigned to PCIe expansion cards in Slot 1 or Slot 2 (e.g., eth10+), or they simply do not align with the hardcoded enumeration logic of the R2/R3 controller architecture. Correct identification of these interfaces is critical for configuring link aggregation (LACP) or assigning iSCSI IPs during the initial setup.
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