Tekram D690CD IDE PCI Cache Controller (with RAID level 1 Mirroring and caching)
ARCO Inc. DupliDisk IDE disk mirroring controller
Support for ATA, IDE, E-IDE and UDMA drive. Controllers available can be plugged into ISA and PCI slots, and directly into the IDE controller. Furthermore, 3.5-inch and 5.25-inch Bay Mount units are available that fit into the respective drive bays. More information at
http://www.arcoide.com
