Patent ID: 7643234

Claim:
A patterned storage media, comprising: servo sectors that are patterned into discrete islands using self-assembly, the servo sectors comprising: a first array of islands having hexagonal close packed (HCP) ordering that defines at least one burst field; and a second array of islands having HCP ordering that defines at least one burst field that is track-wise offset from the first array of islands; wherein the first array of islands define first and second burst fields and the second array of islands define third and fourth burst fields, the burst fields are comprised of a plurality of rows that are written with a servo writing process to have the repeating pattern of: consecutive islands in a first row of the first array having uniform polarity in the first burst field, and having an alternating polarity in the second burst field, and consecutive islands in a second adjacent row of the first array having an alternating polarity in the first burst field, and having uniform polarity in the second burst field; and consecutive islands in a first row of the second array having an alternating polarity in the third burst field, and having uniform polarity in the fourth burst field, and consecutive islands in a second adjacent row of the second array having uniform polarity in the third burst field, and having an alternating polarity in the fourth burst field; wherein the first and second rows in the first and second burst fields are track-wise offset from the first and second rows in the third and fourth burst fields.