Editing NonStop (server computers) (section)

{{Short description|Family of fault-tolerant servers}}
{{Use dmy dates|date=October 2023}}

{{Infobox computing device
| name = NonStop (server computers)
| developer = [[Hewlett Packard Enterprise]]
| manufacturer = [[Hewlett Packard Enterprise]]
| type = Computer Server
| retail availability = 1976 to current
| os = NonStop OS
| predecessor = Tandem Computers Inc.
}}

'''NonStop''' is a series of [[server (computing)|server computers]] introduced to market in 1976 by [[Tandem Computers]] Inc.,<ref>{{cite web |title=History of TANDEM COMPUTERS, INC. – FundingUniverse |url=http://www.fundinguniverse.com/company-histories/tandem-computers-inc-history/ |access-date=1 March 2023 |website=fundinguniverse.com}}</ref> beginning with the NonStop [[product line]].<ref>{{cite book |last=Katzman |first=J. A. |title=System Architecture for NonStop Computing |publisher=Tandem Computers, Incorporated |year=1977 |location=Cupertino, California |chapter=Chapter 29}} (also published in Compcon, 1977 pp. 77–80)</ref> It was followed by the Tandem Integrity NonStop line of [[lockstep (computing)|lock-step]] fault-tolerant computers, now defunct (not to be confused with the later and much different [[Hewlett-Packard]] [[HPE Integrity Servers|Integrity]] [[product line extension]]). The original NonStop product line is currently offered by [[Hewlett Packard Enterprise]] since Hewlett-Packard Company's split in 2015. Because NonStop systems are based on an integrated hardware/software stack, Tandem and later HPE also developed the NonStop OS [[operating system]] for them.

NonStop systems are, to an extent, self-healing. To circumvent [[single point of failure|single points of failure]], they are equipped with almost all [[redundancy (engineering)|redundant]] components. When a mainline component fails, the system automatically falls back to the backup.

These systems can be used by [[bank]]s, [[stock exchange]]s, payment applications, retail companies, energy and utility services, healthcare organizations, manufacturers, telecommunication providers, transportation, and other enterprises requiring extremely high [[uptime]].{{Citation needed|date=November 2022}}