The eight-channel ARC-1220 controller is based on an Intel IOP333 processor (that works an impressive frequency of 500MHz!) and supports up to eight Serial ATA-II drives (with a data-transfer rate of 3GB/s). The controller comes with 128 megabytes of onboard memory (without an opportunity of adding more); the battery backup unit is optional. The controller allows building the following types of RAID arrays: 0, 1, 3, 5, 6, 10 and JBOD. It is designed as a PCI Express card (the PCI-X version of this controller has the model name of ARC-1120).



Link: X-bit labs