Smart Array 6i: The new Smart Array 6i controller is an Ultra320 intelligent array controller for entry-level, hardware-based fault tolerance for protection of OS, applications, and logs. Most models have one internal-only channel. The DL380 G4 has a second channel for optional duplex backplane support or external tape support. The Smart Array 6i controller provides one of the most cost effective alternatives to software-based RAID in the market today.