Samsung Electronics Co., Ltd.

Je-Kyeom Jeon

Byung-Ki Lee

Sung-Kug Cho

Dong-Ju Roh

Jae-Ju Kim

Sang-Yoon Oh

Young-Ho Park

Yong-Hwa Lee

Hyung-Chul Jang

A key-value storage device includes a non-volatile memory and a controller. The key-value storage device is configured to communicate with a host and includes a controller and a non-volatile memory. The controller is configured to receive, from the host, a first command including a key, a first chunk among multiple chunks included in a value corresponding to the key, and a first chunk index corresponding to the first chunk. The controller is configured to store mapping information of the first chunk in a mapping table based on the key and the first chunk index. The non-volatile memory is configured to store the key and the first chunk based on the mapping information.

Key-value storage device and method of operating the same

A method of operating a key-value storage device includes a key-value storage device receiving from a host a first command including a first key, a first value, and a first snapshot identification (ID), the key-value storage device generating a first snapshot entry including the first snapshot ID, the first key, and a first physical address in a non-volatile memory device at which the first value is written, in response to the received first command, receiving from the host a second command including the first key, a second value, and a second snapshot ID, and in response to the received second command, the key-value storage device generating a second snapshot entry including the second snapshot ID, the first key, and a second physical address in the non-volatile memory device at which the second value is written.

Key-value storage device supporting snapshot function and operating method thereof

Growing community of inventors

Siheung-si, South Korea

Je-Kyeom Jeon