System administrator

system administrationadministratorsystem administratorssystems administratorsysadminadministrationadministratorssystems administrationadminserver administrator
A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.wikipedia
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Computer security

cybersecuritycyber securitysecurity
The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so. Particularly when dealing with Internet-facing or business-critical systems, a sysadmin must have a strong grasp of computer security.

Computer operator

operatoroperatorsOperations
Operators assist system administrators and programmers in testing and debugging of new systems and programs prior to their becoming production environments.

Multi-user software

multi-usermultiusersingle-user
A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.
Management systems are implicitly designed to be used by multiple users, typically one system administrator or more and an end-user community.

Sun Certified Network Administrator

SCNA
In some cases, candidates are expected to possess industry certifications such as the Microsoft MCSA, MCSE, MCITP, Red Hat RHCE, Novell CNA, CNE, Cisco CCNA or CompTIA's A+ or Network+, Sun Certified SCNA, Linux Professional Institute, Linux Foundation Certified Engineer or Linux Foundation Certified System Administrator, among others.
SCNA (an abbreviation of Sun Certified Network Administrator) is a certification for system administrators and covers LANs and Solaris.

Webmaster

webmastersweb masterwebmistress
Most server roles, however, would be overseen by an IT Administrator.

User (computing)

userusernameusers
The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.
Power users use advanced features of programs, though they are not necessarily capable of computer programming and system administration.

Network administrator

network engineeradministratornetwork administrators
In smaller organizations, the system administrator might also act as technical support, Database Administrator, Network Administrator, Storage (SAN) Administrator or application analyst.
In other organizations, some of these roles mentioned are carried out by system administrators.

League of Professional System Administrators

LOPSALeague of Professional System Administrators (LOPSA)
The League of Professional System Administrators (LOPSA), founded in 2004, is a professional association for IT Administrators.

Superuser

rootroot accessroot user
In computing, the superuser is a special user account used for system administration.

System Administrator Appreciation Day

Sysadmin Day
System Administrator Appreciation Day, also known as Sysadmin Day, SysAdminDay, Sysmas, or controversially as a Neckbeard Day is an annual event created by system administrator Ted Kekatos.

Tom Limoncelli

Thomas A. Limoncelli
Tom Limoncelli (born December 2, 1968) is an American system administrator, author, and speaker.

Application analyst

analysts
In smaller organizations, the system administrator might also act as technical support, Database Administrator, Network Administrator, Storage (SAN) Administrator or application analyst.
This may entail some computer programming, some system administration skills, and the ability to analyze a given problem, diagnose it and find its root cause, and then either solve it or pass the problem on to the relevant people if it does not lie within the application analyst's area of responsibility.

Network management

network administrationmanagementnetwork
Network management is the process of administering and managing computer networks.

Internet

onlinethe Internetweb
Particularly when dealing with Internet-facing or business-critical systems, a sysadmin must have a strong grasp of computer security.
It has been referred to among system administrators as the Virtual Private Nightmare, because it extends the secure perimeter of a corporate network into remote locations and its employees' homes.

LISA (organization)

SAGESAGE (organization)LISA
LISA is the USENIX special interest group for system administrators.

DevOps

DevOpDevSecOpsTestOps
DevOps is often viewed as an approach to applying systems administration work to cloud technology.

Sysop

system operatorsysopsadministrators
A person with equivalent functions on a network host or server is typically called a sysadmin, short for system administrator.

Computer

computerscomputer systemdigital computer
A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.

Server (computing)

serverserversserver computer
A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.

Uptime

availabilitynon-stoponline availability
The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.

Computer performance

performanceprocessing powercomputing power
The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.

System resource

resourcesresourcesystem resources
The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.

Budget

budgetingbudgetsannual budget
The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.