Chapter 8 - 1. Congestion Management in TCP Storage Networks

This chapter covers the following topics. 本章包括以下主题。

 Understanding congestion in TCP storage networks.

 Detecting congestion in TCP storage networks.

 Traffic patterns with iSCSI and NVMe/TCP and correlation with network congestion.

 Preventing congestion in TCP storage networks.

At the time of this writing, iSCSI is the most used protocol for carrying block storage traffic via a TCP/IP network. NVMe/TCP is emerging and expected to be in the mainstream in the coming years. As Chapter 1, “Introduction to Congestion in Storage Networks,” explains, these “storage protocols” use TCP at layer 4 of the OSI model as their “transport protocol”. This means that congestion management for iSCSI and NVMe/TCP traffic boils down to congestion ma