Back to results
US 12,131,758 B2Granted
Fast partial erasure for drive sanitization
AssigneeSeagate Technology LLC
InventorsXiong Liu, Lihong Zhang, Quan Li, Wenxiang Xie
Life of this patent
Estimating the term…
Abstract
A method involves determining a threshold error rate that will result on data stored on a magnetic disk surface of a disk drive being unrecoverable. The method also involves determining a seek velocity that will overwrite sufficient portions of the data such the data will exhibit at least the threshold error rate. The disk drive performs at least one traversal of the magnetic disk surface with a head of the disk drive that emits an erase field during the at least one traversal at the seek velocity. The at least one traversal sanitizes the data.
Claims20
A method, comprising:
- determining a threshold error rate that will result on data stored on a magnetic disk surface of a disk drive being unrecoverable;
- determining a seek velocity that will overwrite sufficient portions of the data such the data will exhibit at least the threshold error rate;
- and
- performing at least one traversal of the magnetic disk surface with a head of the disk drive that emits an erase field during the at least one traversal at the seek velocity, the at least one traversal sanitizing the data.
1 more element
A disk drive, comprising:
- a reserved data storage that stores a seek velocity that will overwrite sufficient portions of data a magnetic disk surface of the disk drive such the data on will exhibit at least a threshold error rate that will result on the data being unrecoverable;
- and
- a controller coupled to a write head that is operable to write to the magnetic disk surface, the controller operable to, in response to a sanitization command, perform at least one traversal of the magnetic disk surface with the write head emitting an erase field during the at least one traversal at the seek velocity, the at least one traversal sanitizing the data.
Dependencies are inferred from the claim text.