How Seagate’s terabit-per-square-inch hard drive works
March 26, 2012 | Source: Technology Review
Heat-assisted magnetic recording (credit: Seagate)
Heat-assisted magnetic recording will store one terabit (a trillion bits) per square inch, allowing for 60 terabytes on a standard 3.5-inch disk by 2015.
Disks made with current technology can hold about 3 terabytes.