Western Digital have announced a 3TB hard disk drive. It does this with 4 x 750GB spindles.
“Once again leading the way in the storage industry, WD now offers 2.5 TB and 3 TB hard drives, the world’s largest capacities to date on a single drive. At such high capacities certain compatibility issues arise. There are a number of host bus adapter (HBA) and chipset vendors not currently offering drivers that support drives larger than 2.19 TB. To provide a solution for these types of compatibility issues, WD is bundling WD Caviar® Green™ 2.5 TB and 3 TB drives with an ACHI-compliant HBA that, once installed, allows the operating system to use a known driver to correctly support large capacity drives.”