What is RAIDIOS and what is it used for?
RAIDIOS is a specification used to enable an embedded I/O controller, embedded on the motherboard, to be used as just an I/O controller or to be the I/O component of a hardware RAID subsystem. The RAIDIOS circuit allows an I/O Processor (either embedded on the motherboard or on an add-in card) to configure the I/O controller and service the I/O controller’s interrupts. The I/O controller and the I/O Processor together are two of the primary components of a hardware RAID subsystem.