Chapter 1 - 6. Introduction to Congestion in Storage Networks

NVMe/TCP

NVMe/TCP carries NVMe commands over TCP transport (Figure 1-8) for accessing remote block storage via a lossy or sometimes lossless network. It is an OSI layer 5 (sessions layer) protocol. NVMe/TCP 通过 TCP 传输（图 1-8）传输 NVMe 命令，以便通过有损或无损网络访问远程块存储。这是一个 OSI 第 5 层（会话层）协议。

Figure 1-8 NVMe/TCP Packet Format

NFS

Network File System (NFS) provides access to remote file storage over TCP transport via a lossy network. It spans layer 5 (sessions layer), layer 6 (presentation layer), and layer 7 (application layer) of the OSI model. 网络文件系统（NFS）通过有损网络以 TCP 传输方式访问远程文件存储。它跨越 OSI 模型的第 5 层（会话层）、第 6 层（表现层）和第 7 层（应用层）。

SMB

Server Message Block (SMB) is another protocol for providing access to remote file storage over TCP transport via a lossy network. It spans layer 5 (sessions layer), layer 6 (presentation layer), and layer 7 (application layer) of the OSI model. 服务器消息块（SMB）是另一种通过有损网络在 TCP 传输上提供远程文件存储访问的协议。它跨越 OSI 模型的第 5 层（会话层）、第 6 层（表现层）和第 7 层（应用层）。

HTTP

Object storage uses HTTP(s) over TCP transpo