The Advanced SerialRAID Plus Adapter allows you to connect SSA disk drives to certain system units with a Peripheral Component Interconnect (PCI) bus. These disk drives can be accessed individually or they can be configured in RAID arrays. RAID (Redundant Array of Independent Disks) provides a way to spread stored data among a number of hard disk drives attached to a host system. A PCI bus provides high-speed data transfer. An optional SSA Fast-Write Cache Option Card feature further improves the performance of the adapter.You can create, control, and manage a RAID configuration with supporting host software. You can install up to 32 Advanced SerialRAID Plus Adapters in some host systems, depending on the system unit. The Advanced SerialRAID Plus Adapter supports data rates up to 40 MB per second on each SSA interface; and data rates up to 68 MB per second on the PCI bus. You can install up to 32 Advanced SerialRAID Plus Adapters in some host systems, depending on the system unit.The Advanced SerialRAID Plus Adapter can manage disks that are configured as non-RAID, RAID-0, and RAID-5 and any of these can be configured with the SSA Fast-Write Cache option.