Mainframe generally refers to the z/Architecture family of IBM computers which traces its ancestry back to the System 360 introduced by IBM in 1965. The most recent z/Architecture model is the z/Enterprise EC12 introduced in the fall of 2012. The operating system used by these machines can be z/OS, z/VM, z/VSE, z/Linux, and z/TPF.

Mainframe generally refers to the z/Architecture family of IBM computers which traces its ancestry back to the System 360 introduced by IBM in 1965. The most recent z/Architecture model is the z14 introduced in the summer of 2017. The operating system used by these machines can be z/OS, z/VM, z/VSE, z/Linux, and z/TPF.

Mainframe generally refers to the z/Architecture family of IBM computers which traces its ancestry back to the System 360 introduced by IBM in 1965. The most recent z/Architecture model is the z/Enterprise EC12 introduced in the fall of 2012. The operating system used by these machines can be z/OS, z/VM, z/VSE, z/Linux, and z/TPF.