Toshiba Memory Corporation

Maoko Oyamada

Takeshi Tanaka

Kenichi Iwai

Yoshihisa Kojima

Kenichiro Suzuki

Hironobu Miyamoto

According to one embodiment, a memory system includes a controller. The controller controls throttling to make a performance value of the memory system fall between a first performance value and a second performance value. The throttling limits the number of times of accesses per unit time to a nonvolatile memory. The first performance value is calculated based on a third performance value of the memory system and is greater than the third performance value. The third performance value is a value which is expected to be reached at a time when a first period has elapsed since the memory system started being used if throttling is not performed. The second performance value is provided between the first performance value and the third performance value.

Memory system and controlling method

A memory system according to an embodiment includes a non-volatile memory and a controller configured to control the non-volatile memory. The controller includes an interface and a control unit. The interface receives, from a host, a first instruction to change a performance of the memory system as a performance control instruction. The control unit controls the memory system on the basis of the performance control instruction such that the number of parallel operations of parallel operating units which are operated in parallel in the memory system is changed.

Growing community of inventors

Yokohama, Japan

Maoko Oyamada