Related concepts:
“Dual storage IOA configurations” on page 22
You can increase availability using a dual storage I/O adapter (IOA) configuration to connect multiple
controllers to a common set of disk expansion drawers and the included disks and disk arrays.
Figure 10. CCIN 57CD PCIe SAS RAID and SSD adapter 3 Gb x8
Figure 11. CCIN 2B4C PCIe x4 Planar 3Gb SAS RAID adapter
SAS RAID controllers for IBM i 9