The following figure shows the physical SAN design and redundant connectivity between the database servers, redundant 16 Gbps FC switches, and the two X-Bricks XtremIO X2 cluster. It also shows the recommended PCIe slots to populate the HBAs in their respective servers.
Figure 4. Physical SAN design and connectivity
The SAN design features redundant components and connectivity at every level to ensure that there is no single point of failure. Because of this design, the database server is able to reach the storage array even if one or more HBA ports,one HBA, one FC switch, one XtremIO front-end port or storage controller, or one XtremIO X-Brick fails.