Abstract

Dell’s PowerMax 64G Enterprise Storage Solution brings together Dell PowerEdge 17G servers, a Marvell QLogic QLE2872C 64G Fibre Channel HBA, Dell Connectrix MDS 9700 Enterprise Directors built by Cisco, and the Dell PowerMax 8500 array into a unified 64G FC architecture for mission-critical storage environments. Tolly’s evaluation focused on whether these multi-vendor components operate as a seamless end-to-end platform for interoperability, resilience, and congestion control in modern data centers. 

Testing showed automatic 64G link negotiation across the server, HBA, SAN directors, and storage array, along with automatic Logical Unit Number discovery and multipath configuration without manual intervention. The environment used a Dell PowerEdge R760 server running RHEL 9.6 with multipath I/O enabled, dual Dell Connectrix MDS 9700 directors running NX-OS 9.4(3b), a Dell PowerMax 8500 with dual 64G FC ports, and a Marvell QLogic 2872C dual-port HBA with Virtual Lanes enabled. This validated end-to-end 64G FC interoperability while preserving the redundancy expected in enterprise SAN deployments.   

The report also highlights strong fault tolerance. Tolly tested HBA port failover, adapter-level isolation, inter-director fabric resilience, redundant power supply protection, and storage-port failover. In each case, storage traffic continued running without interruption, confirming that the architecture supports automated recovery across host, fabric, and array layers. The Connectrix directors’ modular design, combined with multipath I/O and redundant FC links, helps eliminate single points of failure in the storage path. 

A key technical differentiator is congestion management. Using Fabric Performance Impact Notification (FPIN), Marvell QLogic Universal SAN Congestion Management can detect congestion, assign traffic into fast, normal, or slow virtual lanes, and throttle outbound traffic when needed. In testing, congested traffic was quarantined to the slow lane and bandwidth was reduced to below 50% of wire speed until congestion cleared, after which traffic automatically returned to normal. The solution also supports Cisco Dynamic Ingress Rate Limiting, SAN telemetry, deep analytics, frame encryption, secure boot, and line-rate access controls for additional visibility and protection.