© 2011 Sixhills Consulting LtdSystem TypologyEnterpriseServerMid-range/ Departmental/ DistributedServerDesktop• Mainframe– IBM – zSeries, IBM 370 descendents (but can run Linux too)– Unisys – Clearpath (legacy Burroughs/Sperry + later Intel add-ons) • Some high-end Wintel (Unisys ES/7000) and UNIX (HP SuperDome, SUN M9000)• UNIX – ‘proprietary’ variants on RISC processors (Sun/Solaris, HP/UX, IBM/AIX)• Linux – commodity alternative, open source O/S on Intel processors• Wintel – commodity ‘standard’ architecture based on Microsoft Windows/Intel• Proprietary – AS/400, iSeries• May be spread through organisation (distributed) or co-located in data centres• Intel processor, standardised architecture (PC)• Windows, or maybe Apple in niche applications• Rarely LinuxInformation Technology Sourcing FundamentalsP3
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