IBM products have undergone numerous evolutions and name changes over the years. In the following summary, the latest series is at the top of each list:
MAINFRAMES"Z" BRANDSSystem z (renaming of zSeries)
eServer zSeries (evolution of System/390)
System/390 (evolution of System 370)
System/370 (evolution of System 360)
System/360 (original system)
x86-BASED SERVERS"X" BRANDSSystem x (renaming of xSeries)
eServer xSeries (renaming of Netfinity)
Netfinity (renaming of PC Server)
PC Server (original system)
MIDRANGE BUSINESS SYSTEMS"I" BRANDSPower Systems (System i and System p merged)
System i (renaming of iSeries)
i5 (evolution of iSeries)
eServer iSeries (renaming of AS/400)
AS/400 (System/38 evolution with
support for System/36)
System/38 (original system)
System/36 (original system)
SCIENTIFIC & TECHNICAL WORKSTATIONS"P" BRANDSPower Systems (System i and System p merged)
System p (renaming of pSeries)
p5 (evolution of pSeries)
eServer pSeries (renaming of RS/6000)
RS/6000 (original system)
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