Seagate Breaks World Magnetic Recording Density Record With 421 Gbits Per Square Inch

Seagate Technology announced the results of a magnetic recording demonstration, setting a world record of 421 Gbits per square inch. The demonstration used perpendicular recording heads and media created with currently available production equipment that validates Seagate's ability to scale the technology for the foreseeable future without major technology changes or capital additions. Dr. Mark Kryder of Seagate unveiled the findings during his keynote presentation at the IDEMA DISKCON show in celebration of the 50th anniversary of the hard drive.

The demonstration is evidence of the continued momentum in disc drive innovation, and reaffirms the disc drive as the undisputed king of storage when capacity and cost-effectiveness are both required. At the demonstrated density level, Seagate expects the capacity ranges to result in solutions ranging in 40GB to 275GB for 1-and 1.8-inch consumer electronics drives, 500GB for 2.5-inch notebook drives, and nearly 2.5TB for 3.5-inch desktop and enterprise class drives.

The areal density of 421 Gbpsi was demonstrated using 10 E-3 off-track bit error rate criteria with 5% squeeze and meeting a 10% off-track capability at a data rate of 735 megabits per second. The track density was 275,000 tracks per inch, and the linear density was 1.53 million bits per inch for a bit aspect ratio of 5.6. The demonstration was conducted using a product channel, perpendicular head, and thermally stable media created with current production equipment.

Source: Seagate Technology

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