WiebeTech today announced a 500GB version of it DuoGB dual FireWire drive. The US$999.95 drive sports an aluminum casing and features 7200RPM spindle speed. One OXFW911 bridge supports two drives with full ATA-6 support, so that two drives up to 250GB (each) and beyond may be used in a single enclosure. Users may experience transfer rates of up to 40MB/sec when configured as a RAID under Mac OS X, according to the company.