公开(公告)号：US20230205633A1

公开(公告)日：2023-06-29

申请号：US17564078

申请日：2021-12-28

Applicant: Seagate Technology LLC

Inventor： Stacey SECATCH ,  Mark A. GAERTNER

IPC: G06F11/10 ,  G06F21/60 ,  H04L9/14

CPC classification number: G06F11/1092 ,  G06F21/602 ,  H04L9/14

Abstract: Failure-domain-specific cryptographic keys for use in control of access to data within failure domains of a storage drive. A unique failure domain-specific cryptographic key may be associated with each of a plurality of failure domains in a storage drive. The failure domains may correspond to any portion of the storage media of a drive that is susceptible to failure while leaving other portions of the storage drive functional. In turn, upon detection of a condition associated with a failure (e.g., an actual or predicted failure) of a failure domain, the associated failure domain-specific cryptographic key may be deleted to preclude further access to data in the failed failure domain. Deletion of the failure domain-specific cryptographic key may be before or after data in the failed failure domain is rebuilt in another portion of a storage drive that is functional.

公开(公告)号：US20230325107A1

公开(公告)日：2023-10-12

申请号：US17718089

申请日：2022-04-11

Applicant: Seagate Technology LLC

Inventor： Mehmet Fatih ERDEN ,  Mark A. GAERTNER ,  Raye A. SOSSEH

IPC: G06F3/06

CPC classification number: G06F3/0655 ,  G06F3/0608 ,  G06F3/0679

Abstract: Optimization of an aerial density capability (ADC) leveraging different qualities of media surfaces to which sub-portions of an encoded data portion are written. That is, data may be encoded to generate an encoded data portion according to a coding scheme. In turn, the encoded data portion may be divided into a plurality of sub-portions, each of which may be written to different media surfaces in a storage drive. The sub-portions may be read from the different media surfaces and combined to generate a recreated encoded data portion that is decoded using the coding scheme. As the encoded data portion is divided into sub-portions, the combined sub-portions may provide different error rates or signal-to-noise ratios that may allow for lower quality sub-portions to be assisted during the decoding process by higher quality sub-portions.