Sandisk Technologies Inc.

Dheemahi Turaga

Sowjanya Sunkavelli

Raju Singh

Santoshi Sravya Remella

Sharada Banappa

Venkatesh Naidu Pamoti

A data storage device includes a command analysis system that analyzes one or more received commands to determine whether a garbage collection process associated with the one or more received commands should be executed or paused. The command analysis system determines the garbage collection process should be paused when one or more command parameters associated with the received command indicate that the command is an unmap command and is sequential with a previously received unmap command. The garbage collection process is paused until a non-sequential command is received or until an operating state of the data storage device indicates that the garbage collection process should be resumed.

Pausing garbage collection during a sequential unmapping process

A data storage device includes an unmap command analysis system that dynamically determines a size, or a LBA range, of an unmap command executed on the data storage device. The size of the unmap command is based, at least in part, on an amount of random data stored by the data storage device. The unmap command analysis system determines whether to check the amount of random data stored by the data storage device in response to a trigger event. When the trigger event is detected and the amount of random data is determined, the unmap command analysis system compares the amount of random data to information in an unmap command size table. The unmap command size table indicates which unmap command sizes are most efficient based on the determined amount of random data stored by the data storage device.

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Bengaluru, India

Dheemahi Turaga