IBM mainframe
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IBM mainframes are large computer systems produced by IBM since 1952. During the 1960s and 1970s, IBM dominated the computer market with the 7000 series and the later System/360, followed by the Syste
IBM 704 mainframe at NACA in 1957
IBM 1401 undergoing restoration at the Computer History Museum
IBM System/360 Model 50
IBM System z800
IBM Z
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IBM Z is a family name used by IBM for all of its z/Architecture mainframe computers. In July 2017, with another generation of products, the official family was changed to IBM Z from IBM z Systems; th
IBM mainframe
…included OS/360 (with PCP, MFT, and MVT), BOS/360, TOS/360, and DOS/360. The System/360 later evolved into the System/370, the System/390, and the 64-bit zSeries, System z, and zEnterprise machines. System/370 introduced virtual memory capabilities in all models other than the first System/370 models; the OS/VS1 variant of OS/360 MFT, the…
A single-frame IBM z15 mainframe. Larger capacity models can have up to four total frames. This model has blue accents, as compared with the LinuxONE III model with orange highlights.
An IBM z14 mainframe. It is distinguished from the LinuxONE model by the blue accents on the doors.
A pair of IBM mainframes. On the left is the IBM z13 (while the naming was changed, the z13 line had a zSystems label on doors). On the right is the IBM LinuxONE Rockhopper.
A trio of IBM zEnterprise mainframe computers. From left to right: EC12, BC12, Bladecenter Extension.