Power efficient method and system for executing host data processing tasks during data retention operations in a storage device

A system, comprising:

• a host;
• and
• a solid state drive,
• the system being configured to:
• receive a query;
• and
• execute the query
• the executing of the query comprising executing a plurality of read operations,
• the executing of the read operations comprising:
• determining whether the query is time-sensitive;
• and
• when the query is not time-sensitive, executing the read operations with a data retention scan,
• wherein the determining whether the query is time-sensitive comprises determining whether the query includes a requested completion interval less than a threshold interval.

A system, comprising:

• a host;
• and
• a solid state drive,
• the system being configured to:
• receive a query;
• and
• execute the query
• the executing of the query comprising executing a plurality of read operations,
• the executing of the read operations comprising:
• determining whether the query is time-sensitive;
• and
• when the query is not time-sensitive, executing the read operations with a data retention scan,
• wherein the executing of the read operations with the data retention scan comprises:
• storing the query in the host until a scheduled start time of a next scheduled data retention scan;
• and
• sending, by the host, a query corresponding to the read operations, to the solid state drive.

A system, comprising:

• a host;
• and
• a solid state drive,
• the system being configured to:
• receive a query;
• and
• execute the query
• the executing of the query comprising executing a plurality of read operations,
• the executing of the read operations comprising:
• determining whether the query is time-sensitive;
• and
• when the query is not time-sensitive, executing the read operations with a data retention scan,
• wherein the executing of the read operations with the data retention scan comprises:
• first, storing the query in the solid state drive until a scheduled start time of a next scheduled data retention scan;
• and
• second, executing, by the solid state drive, the plurality of read operations.

A method for operating a solid state drive connected to a host, the solid state drive comprising nonvolatile memory and an environmental data logging circuit and a source of a battery power, the method comprising:

• transitioning the solid state drive to a power save mode;
• receiving, by the host, a query;
• executing, by the solid state drive, a plurality of read operations corresponding to the query,
• the executing of the plurality of read operations comprising:
• determining whether the query is time-sensitive;
• and
• when the query is not time-sensitive, executing the read operations with a data retention scan,
• wherein the determining whether the query is time-sensitive comprises determining whether the query includes a requested completion interval less than a threshold interval.