Unified Storage

A unified storage is a released storage device offering consolidated block and file services for open system clients and servers (both physical and virtual). Users and applications access data via a common network.

Uninterruptible Power Supply (UPS)

The Uninterruptible Power Supply (UPS) aims at securing the availability of critical load supplies in case of failures. Both static and dynamic methods are used. Static UPS-methods secure the power supply with batteries, dynamic UPS-methods use cinetic energy in the...


Unisphere describes a new approach of unified storage management offering users a flexible, user-friendly and integrated user experience. Information are consolidated and displayed in a single view. The intuitive and context-based approach considerably simplified the...

Uptime Institute

The Uptime Institute is a US-american institution working in the area of computer centres. It is the developer of the tier-system (an assessment system for the availability of computer centres).


URL (Uniform Resource Locator) is a subtype of the URI (Uniform Resource Identifier). Via the URL, the resource can be identified and localised by the chosen access method (e.g. the network protocol) and the location. The URL is also known as web address or internet...


A URL-injection means that phishing attackers integrate a dangerous code in a website. It thus seems as if the website supported a harmful website.


URL-triggers initiate certain processes when visiting a website. To each trigger, tags are assigned that are prompted if the conditions for the trigger are met.


In computing, usability describes the user-friendliness of a website or an application.

User Datagram Protocol (UDP)

The User Datagram Protocol (UDP) is a network protocol that allows computer applications to send messages to other programmes, with a minimum of protocol mechanisms.

User Experience (UX)

The user experience (UX) comprises all perceptions and experiences that an online product or service exerts on a user.