Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O1000 for Orac - Page 38

Architecture 2-15 Fibre Channel SAN Switch-to-Array Controller Paths Figure 2-6 highlights the I/O data path that runs between the Fibre Channel SAN Switch and the RA4000 Array Controller in each RA4000/RA4100 Array of a Fibre Channel Fabric. There is one path for each array controller. Fibre Host Adapters Client LAN Fibre Host Adapters ProLiant Servers Switch (Cluster Interconnect) ProLiant Servers Fibre Channel SAN Switch RA4000/4100 Array Figure 2-6. Fibre Channel SAN Switch-to-array controller I/O data path If this connection experiences a fault, the affected RA4000/RA4100 Array cannot be accessed from any of the cluster nodes. Because the nodes do not have access to the affected RA4000/RA4100 Array, users cannot reach the data contained on that array. The data, however, is unharmed and remains safely stored on the physical disks inside the RA4000/RA4100 Array. As with the Fibre Host Adapter-to-Fibre Channel SAN Switch data path, Compaq Insight Manager detects this fault, changes the affected RA4000/RA4100 Array's status to "Failed," and changes its condition to red.