Mixed mode (RAID and HBA simultaneously)

Any drive that is not a member of a logical drive or assigned as a spare is presented to the operating system. This mode occurs by default without any user intervention and cannot be disabled. Logical drives are also presented to the operating system.

Controllers that support mixed mode (P-class and E-class) can reduce the number of controllers in the system and efficiently use drive bays within a backplane. For example, a solution that needs all the drives presented as HBA (except a two-drive mirror for boot support) can be accomplished with a single controller attached to a single backplane.