The full form of CSM in the context of computer networking often refers to Communications Storage Manager.
While CSM can have different meanings depending on the context (e.g., Change and Service Management, Customer Success Manager), within the realm of computer networking, especially in older mainframe environments, it most commonly stands for Communications Storage Manager.
Communications Storage Manager (CSM) Explained
Communications Storage Manager (CSM) is a component associated with VTAM (Virtual Telecommunications Access Method). VTAM is an IBM software product used for managing communication between applications and devices in a System/370 or System/390 mainframe environment.
CSM's primary role is to facilitate efficient data sharing between host applications and VTAM itself. It allows applications to share data with VTAM and other CSM users without the need for physically copying the data. This is achieved by enabling applications to share buffers, which reduces CPU utilization and enhances overall system performance, especially when dealing with large amounts of data.
In essence, CSM optimizes data transfer and reduces the processing overhead associated with moving data around within the mainframe environment.
