Abstract: A storage device includes a nonvolatile memory device that includes a plurality of memory blocks, and a controller that uses some memory blocks of the plurality of memory blocks as a buffer area. Memory blocks storing invalid data from among the some memory blocks are invalid memory blocks, and the controller identifies memory blocks, of which an elapsed time after erase is greater than a reuse time, from among the invalid memory blocks as an available buffer size, and provides the available buffer size to an external host device.

Abstract: A storage device includes a nonvolatile memory device that includes a plurality of memory blocks, and a controller that uses some memory blocks of the plurality of memory blocks as a buffer area. Memory blocks storing invalid data from among the some memory blocks are invalid memory blocks, and the controller identifies memory blocks, of which an elapsed time after erase is greater than a reuse time, from among the invalid memory blocks as an available buffer size, and provides the available buffer size to an external host device.

Abstract: A storage device includes a nonvolatile memory device including memory blocks divided into a first memory area and a second memory area; and a memory controller. In the case of programming specific attribute data, the memory controller determines a memory area in which the specific attribute data will be programmed according to a wear out ratio of the first memory area and a wear out ratio of the second memory area. The wear out ratio is a ratio of the current maximum erase count of memory blocks of a memory area with respect to the allowable maximum erase count of the memory area.

Abstract: Storage devices including a memory device and methods of operating the storage devices are provided. The storage devices may include a controller which is configured to program first bit data and second bit data paired with the first bit data into a memory device. The first bit data may be less significant bit data than the second bit data. The controller may be configured to selectively perform or skip backup of the first bit data when programming the second bit data.

Abstract: A storage device includes a nonvolatile memory device including memory blocks divided into a first memory area and a second memory area; and a memory controller. In the case of programming specific attribute data, the memory controller determines a memory area in which the specific attribute data will be programmed according to a wear out ratio of the first memory area and a wear out ratio of the second memory area. The wear out ratio is a ratio of the current maximum erase count of memory blocks of a memory area with respect to the allowable maximum erase count of the memory area.

Abstract: Storage devices including a memory device and methods of operating the storage devices are provided. The storage devices may include a controller which is configured to program first bit data and second bit data paired with the first bit data into a memory device. The first bit data may be less significant bit data than the second bit data. The controller may be configured to selectively perform or skip backup of the first bit data when programming the second bit data.

Abstract: A method of managing data in a nonvolatile memory device. The method includes providing a nonvolatile memory device having a hot region and a cold region. The hot region includes first through n-th blocks. Input pages having metadata are received from a host. The input pages are sequentially written to the first through n-th blocks. Valid pages are identified from the input pages written to the first block after the n-th block is written. The valid pages are written to the cold region.