Abstract: A method of operating a solid state drive (SSD) is provided. The method includes generating, by a controller provided in the SSD, a free block list indicating a plurality of free super blocks, wherein adjacent free super blocks of the plurality of free super blocks correspond to different dies of a plurality of dies provided in the SSD; and allocating, by the controller, a free super block from among the plurality of free super blocks indicated by the free block list for each of a host write operation and a garbage collection write operation, according to a sequence of the plurality of free super blocks indicated by the free block list.

Abstract: Provided are methods, apparatuses, systems, and computer-readable storage media for reducing an open time of a solid-state drive (SSD). In an embodiment, a method includes dividing a logical-to-physical (L2P) address mapping table of the SSD into a plurality of segments. The method further includes assigning one journal buffer of a plurality of journal buffers to each segment of the plurality of segments. The method further includes recreating, during a power on sequence of the SSD, a portion of the plurality of segments by replaying a first subset of the plurality of journal buffers. The method further includes sending, to a host device, a device-ready signal upon successful recreation of the portion of the plurality of segments. The method further includes recreating, in a background mode, a remaining portion of the plurality of segments by replaying a second subset of the plurality of journal buffers.

Abstract: A method for reading data in a storage device is provided. The method includes receiving a read command from a host device, wherein the read command indicates stored data in the storage device and a Logical Block Address (LBA) of the stored data; obtaining a Physical Block Number (PBN) based on the LBA and a Logical to Physical (L2P) mapping; determining whether the PBN corresponds to a volatile memory of the storage device; reading the stored data directly from the volatile memory based on the PBN corresponding to the volatile memory; incrementing a read counter associated with the PBN based on the stored data being read directly from the volatile memory; and reading the stored data from a non-volatile memory of the storage device based on the PBN not corresponding to the volatile memory.

Abstract: Provided are methods, apparatuses, systems, and computer-readable storage media for reducing an open time of a solid-state drive (SSD). In an embodiment, a method includes dividing a logical-to-physical (L2P) address mapping table of the SSD into a plurality of segments. The method further includes assigning one journal buffer of a plurality of journal buffers to each segment of the plurality of segments. The method further includes recreating, during a power on sequence of the SSD, a portion of the plurality of segments by replaying a first subset of the plurality of journal buffers. The method further includes sending, to a host device, a device-ready signal upon successful recreation of the portion of the plurality of segments. The method further includes recreating, in a background mode, a remaining portion of the plurality of segments by replaying a second subset of the plurality of journal buffers.

Abstract: A method for reading data in a storage device is provided. The method includes receiving a read command from a host device, wherein the read command indicates stored data in the storage device and a Logical Block Address (LBA) of the stored data; obtaining a Physical Block Number (PBN) based on the LBA and a Logical to Physical (L2P) mapping; determining whether the PBN corresponds to a volatile memory of the storage device; reading the stored data directly from the volatile memory based on the PBN corresponding to the volatile memory; incrementing a read counter associated with the PBN based on the stored data being read directly from the volatile memory; and reading the stored data from a non-volatile memory of the storage device based on the PBN not corresponding to the volatile memory.