Browse Definitions :
Definition

uptime and downtime

This definition is part of our Essential Guide: Avoiding downtime with VMware Fault Tolerance and High Availability

Uptime is a computer industry term for the time during which a computer is operational. Downtime is the time when it isn't operational. Uptime is sometimes measured in terms of a percentile. For example, one standard for uptime that is sometimes discussed is a goal called five 9s - that is, a computer that is operational 99.999 percent of the time.

This was last updated in September 2005

Join the conversation

2 comments

Send me notifications when other members comment.

Please create a username to comment.

It amazes me that, as familiar as we are with these terms, we never flip them around and consider the work itself. Look at a typical ticket in IT, and it will spent more time waiting to be picked up, or waiting for a decision, than processed - probably by a factor of 100X.

That is to say, from customer request to problem solved, a problem that might take an hour of work and two questions and answers could take 100 business hours - two and a half weeks - to solve. That's a downtime of 99%! Why don't we talk about that as much as we talk about computers?
Cancel
Ao if we say that "so n so"person has asked the downtime of "this particular component. That means we have to stop that component so that they can perform their own activities?
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

SearchSecurity

  • access control

    Access control is a security technique that regulates who or what can view or use resources in a computing environment.

  • ethical hacker

    An ethical hacker, also referred to as a white hat hacker, is an information security expert who systematically attempts to ...

  • two-factor authentication (2FA)

    Two-factor authentication (2FA), sometimes referred to as two-step verification or dual factor authentication, is a security ...

SearchHealthIT

SearchDisasterRecovery

  • virtual disaster recovery

    Virtual disaster recovery is a type of DR that typically involves replication and allows a user to fail over to virtualized ...

  • tabletop exercise (TTX)

    A tabletop exercise (TTX) is a disaster preparedness activity that takes participants through the process of dealing with a ...

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a data center.

SearchStorage

  • Flash Storage

    Flash storage is any type of drive, repository or system that uses flash memory to keep data for an extended period of time.

  • optical disc

    An optical disc is an electronic data storage medium that can be written to and read from using a low-powered laser beam.

  • RAID 0 (disk striping)

    RAID 0 (disk striping) is the process of dividing a body of data into blocks and spreading the data blocks across multiple ...

Close