78 IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide3.10.3 RAID controllersThe Storage Book contains two PCIe 3.0 x8 slots for RAID controllers or SAS HBAs for usewith the internal drives. If two eXFlash SSD units (16x 1.8-inch SSDs) are used, then twocontrollers are required.Figure 3-21 shows the Storage Book’s internal components and one of the RAID adapters.Figure 3-21 Storage Book side viewTable 3-11 lists the RAID controllers, HBAs, and additional hardware and feature upgradesused for internal disk storage. The adapters are installed in slots in the Storage Book.Table 3-11 RAID controllers and HBAs for internal storageTwo PCIe 3.0 x8 slotsfor RAID adaptersServeRAID adapterDrive baysPartnumberFeaturecodeDescription Maximumsupportedx3850 X6Maximumsupportedx3950 X6ModelswhereusedControllers46C9110 A3YZ ServeRAID M5210 SAS/SATA Controller 2 4 All47C8675 A3YY N2215 SAS/SATA HBA 2 4 -Hardware upgrades for the M521047C8656 A3Z0 ServeRAID M5200 Series 1GB Cache/RAID 5 Upgrade 2 4 -47C8660 A3Z1 ServeRAID M5200 Series 1GB Flash/RAID 5 Upgrade 2 4 -47C8664 A3Z2 ServeRAID M5200 Series 2GB Flash/RAID 5 Upgrade 2 4 -Feature on Demand upgrades for the M521047C8708 A3Z6 ServeRAID M5200 Series Zero Cache/RAID 5 Upgrade 1 2 -47C8706 A3Z5 ServeRAID M5200 Series RAID 6 Upgrade 1 2aa. Requires cache memory upgrade (47C8656, 47C8660, or 47C8664)-47C8710 A3Z7 ServeRAID M5200 Series Performance Accelerator 1 2 a -47C8712 A3Z8 ServeRAID M5200 Series SSD Caching Enabler 1 2a -