Oblon, McClelland, Maier & Neustadt, L.L.P.
Memory system
According to one embodiment, a memory system includes a nonvolatile memory and a controller. The nonvolatile memory includes first blocks each including magnetic memory lines and performs writing and reading of data for each block by a last-in first-out (LIFO) method by shifting, in a unit of a layer, data portions stored in a plurality of layers, respectively, in a first direction from a top layer to a last layer or in a second direction opposite to the first direction, the magnetic memory lines including the plurality of layers. The controller controls the nonvolatile memory. The controller selects a source block of a compaction process from the first blocks based on a ratio of layers of a second attribute to the plurality of layers in each of the first blocks.
TOSHIBA MEMORY CORPORATION
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Marie Naomi Hideki Masanobu
Takada Takeda Yamada Shirakawa