Compaq ProLiant 8500 Compaq Parallel Database Cluster Model PDC/O1000 for Orac - Page 45
Storage Hub/FC-AL Switch-to-Array Controller Paths
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2-22 Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide Storage Hub/FC-AL Switch-to-Array Controller Paths Figure 2-11 highlights the I/O data path that runs between the Storage Hub or FC-AL Switch and the RA4000 Array Controller in each RA4000/RA4100 Array of the FC-AL. There is one path for each array controller. Fibre Host Adapters Client LAN Fibre Host Adapters ProLiant Servers Switch (Cluster Interconnect) ProLiant Servers Storage Hub/FC-AL Switch RA4000/4100 Array Figure 2-11. Storage Hub/FC-AL 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-Storage Hub/FC-AL 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.