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US 2011/0258380 A1Published application
Fault tolerant storage conserving memory writes to host writes
AssigneeSeagate Technology LLC
InventorsRyan James Goss, Kevin Gomez, Mark Allen Gaertner, Bruce Douglas Buch
Life of this patent
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Abstract
A data storage apparatus and associated method involving a memory with a plurality of storage elements defining an associated set of stored data, and memory control logic that, responsive to a request to store first data in a first storage element of the plurality of storage elements, computes without storing to any of the plurality of storage elements first redundancy data for the associated set of stored data inclusive of the first data.
Claims20
A data storage apparatus, comprising:
- a memory having a plurality of storage elements defining an associated set of stored data;
- and
- memory control logic that, responsive to a request to store first data in a first storage element of the plurality of storage elements, computes without storing to any of the plurality of storage elements first redundancy data for the associated set of stored data inclusive of the first data.
A method comprising:
- receiving a host command by a data storage device corresponding to storing data in a first storage element of a memory having a plurality of storage elements defining an associated set of stored data;
- in response to the receiving step, computing without storing to any of the plurality of storage elements first redundancy data for the associated set of stored data inclusive of the first data.
A data storage apparatus, comprising:
- a solid state memory (SSM) that stores a first data via a first channel to be part of an associated set of stored data;
- and
- writeback logic appending to the first channel, without storing to the SSM, first updated data corresponding to an update of the first data, and appending to a different channel, without storing to the SSM, first redundancy data for the associated set of stored data inclusive of the first updated data.
Dependencies are inferred from the claim text.