Abstract: After capacity expansion of a storage system, a large-width target chunk group is generated by using a plurality of original small-width source chunk groups in the storage system. In a stripe of the target chunk group, a check stripe unit part points to a check shard, and a data stripe unit part does not directly point to a data shard, but points to a data stripe unit of a source stripe.

Abstract: This disclosure provides methods and storage nodes including network chip and storage devices. In an implementation, a method performed by a network chip comprises generating a command based on an access request from a client, storing the command in a first table in a memory of a storage device connected to the network chip, and executing the command in the first table to access data stored in the storage device.

Abstract: A method for generating a chunk group is provided. After capacity expansion of a storage system, a large-width target chunk group is generated by using a plurality of original small-width source chunk groups in the storage system. In a stripe of the target chunk group, a check stripe unit part points to a check shard, and a data stripe unit part does not directly point to a data shard, but points to a data stripe unit of a source stripe.

Abstract: Embodiments of this application provide a storage node, including a network chip and a storage device. By opening a memory of the storage device to the network chip, a table resource required by the network chip to maintain each connection in a related technology is offloaded to the memory of the storage device. The network chip is configured to generate a command based on an access request of a client, store the command in a first table in the memory of the storage device, and execute the command in the first table to access the storage device. The storage device is configured to store data accessed by using the command. The present invention enables the network chip to support a larger quantity of connections in limited storage space of the network chip.