Mainframe / Server operating systems (multi-user)

Split between UNIX/Linux and Microsoft. Been that way for a long time.

• Usage share of operating systems
  • Servers
  • Mainframes

Usage of operating systems for websites 2022.
Usage share of server operating systems for web servers only (not all servers/mainframes).
"Unix" family includes Linux.

• IDC's Worldwide Quarterly Server Tracker tracks all servers (not just web servers)
  • Pay to view, so hard to link to.
  • In 2014 this had server OS share (by percentage of revenue):
    • Windows 45.7%
    • Linux 28.5%
    • Unix 13.6%
    • z/OS 8.0%
  • Anything more recent on a public link?

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Server operating systems

• mainframes / servers (multi-user),
  file servers (shared filespace in LAN),
  web servers

• UNIX / Linux
• Windows Server
• z/OS
• VM
• VMS

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Microsoft Azure

• Microsoft Azure is Microsoft's cloud computing service.
• It has grown to become Microsoft's biggest single source of income. (Considerably bigger than consumer Windows.)
• Servers run Linux and Windows.
• Microsoft says Linux is more common: "More than 60% of customer cores in Azure run Linux workloads."

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Supercomputers

• Supercomputer operating systems
• TOP500 list
• Dominated by Linux.
• As at 2022, top 10 are all Linux.

ancientbrain.com      w2mind.org      humphrysfamilytree.com

On the Internet since 1987.      New 250 G VPS server.

Note: Links on this site to user-generated content like Wikipedia are highlighted in red as possibly unreliable. My view is that such links are highly useful but flawed.