A civic open-data InfiniBand pod enables QoS and must keep multi-tenant traffic fair. What tuning goal should operators meet?
Select an answer to reveal the explanation.
Short Explanation
QoS shouldn’t mean locking the default tenants out of the building. Tune InfiniBand QoS so the civic open-data pod stays fair and secure without incorrectly starving default-partition traffic.
Full Explanation
A civic open-data InfiniBand pod that enables QoS while keeping multi-tenant traffic fair must meet the tuning goal of InfiniBand QoS that stays fair and secure without incorrectly starving default-partition traffic. QoS should differentiate classes and protect critical tenants without treating the default partition as disposable; many municipal pods still carry legitimate shared or onboarding workloads there. Fair, secure QoS means bounded preference—not exile of the default partition.
InfiniBand QoS with service-level to virtual-lane mapping tuned for improved single-flow throughput fails because it optimizes one flow's speed rather than enforcing fair scheduling across tenants, and it does nothing to prevent default-partition traffic from being starved under load.
InfiniBand partition keys using limited membership to contain tenant broadcast domains for isolation fails because PKey scoping controls broadcast domains, not QoS fairness; it cannot by itself guarantee fair bandwidth distribution or protect default-partition traffic from being crowded out.
InfiniBand base transport with enhanced MTU size selected to raise bulk transfer efficiency fails because a larger MTU improves bulk transfer efficiency, not multi-tenant fairness, and says nothing about QoS class differentiation or default-partition protection.
Exam caveat: QoS priority and PKey isolation work together—fair QoS does not mean tuning only for single-flow throughput, and strong VIP priority does not mean starving default traffic to zero.
Operational check: after QoS changes on the open-data pod, verify VIP tenants meet latency goals while default-partition traffic still forwards at a controlled rate, and confirm PKey memberships remain intact in UFM.