Samsung Electronics Co., Ltd.

Haejong Jang

Seonghoon Woo

Suhyun Kim

Tae-Eun Park

Sang Young Ye

Hyunsook Lee

A storage device is provided. The storage device includes: a plurality of memory devices configured to output status data indicating a busy state indicating an internal operation is being performed or a ready state; and an interface circuit configured to receive a command for reading the status data of the plurality of memory devices, receive the status data of each of the plurality of memory devices from the plurality of memory devices, and output entire status data indicating statuses of the plurality of memory devices based on the status data of each of the plurality of memory devices.

Storage device and method to check statuses of memory devices

An operation method of a storage device connected to a host may include fetching one or more first commands from a first submission queue of the host by performing a first command fetch operation, processing one or more remaining commands other than the last command of the one or more first commands when a last command among the one or more first is a first fused commands, fetching one or more second commands from a second submission queue of the host by performing a second command fetch operation, processing the one or more second commands, and fetching at least two third commands from the first submission queue of the host by performing a third command fetch operation. The at least two third commands may include the first fused command and a second fused command corresponding to the first fused command.

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Suwon-si, South Korea

Haejong Jang