Category 6 Cable - commonly referred to as Cat-6, is a cable standard for Gigabit Ethernet and other network protocols that is backward compatible with the Category 5/5e and Category 3 cable standards. Cat-6 features more stringent specifications for crosstalk and system noise. The cable standard provides performance of up to 250 MHz and is suitable for 10BASE-T / 100BASE-TX and 1000BASE-T / 1000BASE-TX (Gigabit Ethernet). It is expected to suit the 10GBASE-T (10Gigabit Ethernet) standard, although with limitations on length if unshielded Cat 6 cable is used. Category 6 Cable can be identified by the printing on the side of the cable sheath.
Chilled water pumps - A type of precision cooling system widely used in mid-sized to large IT environments. A chilled water system uses water as a cooling medium. Cold water is pumped from a chiller to computer room air handlers designed to cool the space. A chilled water air conditioner can be thought of as similar to a car radiator with a fan, with hot air being cooled by being blown through a cool radiator. In a chilled water system cooling an IT facility, the chilled water may be provided as a utility in the building, or special dedicated water chillers may be installed.
CRAC – Computer Room Air Conditioning - A computer room air conditioning (CRAC) unit is a device that monitors and maintains the temperature, air distribution and humidity in a network room or data center. CRAC units are replacing air-conditioning units that were used in the past to cool data centers. Climate control is an important part of the data center's infrastructure.
Firewall A continuous barrier used to prevent fire spreading from one fire zone or area to another; One or more security mechanisms (hardware and/or software) designed to prevent, detect, suppress, and/or contain unauthorized access to a network.
Halon - Any of several compounds consisting of one or two carbon atoms combined with bromine and one or more other halogens. Halons are gases and are used as fire-extinguishing agents. They are between three and ten times more destructive to the ozone layer than CFCs are.
HVAC - (pronounced either "H-V-A-C" or "H-vak") is an initialism or acronym that stands for "heating, ventilating, and air conditioning". HVAC is sometimes referred to as climate control and is particularly important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where humidity and temperature must all be closely regulated whilst maintaining safe and healthy conditions within. In certain regions (e.g., UK) the term "Building Services" is also used, but may also include plumbing and electrical systems. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as HACR (such as the designation of HACR-rated circuit breakers). Rack Unit- A rack unit or U (less commonly, RU) is a unit of measure used to describe the height of equipment intended for mounting in a 19-inch rack or a 23-inch rack (the dimension referring to the width of rack). One rack unit is 1.75 inches (44.45 mm) high.
PDU - Power Distribution Unit. This electrical device is used to control the distribution of power to the individual loads.
PreAction - An Action involved in a dry system prior to actually flooding the pipe with water and potentially discharging into the protected space.
Rack unit (RU) - a unit of measure of vertical space in an equipment rack. One rack unit is equal to 45 mm (1.75 in).
Raised Floor -T raised floor acts as a supply plenum to deliver conditioned air into the room to cool the equipment and can also serve as wire management for power, data, or both. Air-conditioning units (ACUs) also sit on the raised floor and provide cool air into the raised floor plenum to cool the room and take their return air directly from the room.
A raised floor is a type of floor used in office buildings (such as IT data centers) with a high requirement for servicing to carry cables, wiring, electrical supply, and sometimes air conditioning or chilled water pipes. Additional structural support and lighting are often provided when a floor is raised enough for a person to crawl or even walk beneath.
Raised Floor Height - This type of floor consists of a gridded metal framework or understructure of adjustable-height legs (called "pedestals") that provide support for individual floor panels, which are usually 2×2 feet or 60×60cm in size. The height of the legs/pedestals is dictated by the volume of cables and volume of air necessary to provide air network and power connectivity to the cabinet. Typically arranged for a clearance of at least six inches or 15cm.
Router - An internet working device, operating at the Network layer of the Open Systems Interconnection model, used to direct packets from one network to another.
Server Cabinets -A cabinet designed to hold a network device that combines hardware and software to provide and manage shared services and resources on the network.
Switch 1. A network access device that provides a centralized point for LAN communications, media connections, and management activities where each switch port represents a separate communications channel. Sometimes referred to as a multi-port bridge. 2. A voice communications device that utilizes switching technology to establish and terminate calls.
Switching 1. Networking protocol in which a station sends a message to a hub, which then routes the message to the specified destination station. 2. Establishing a direct signal path form one device to another. Establishing a direct signal path from one device to another.
Telco - In the United States and possibly other countries, "telco" is a short form for Telephone Company. Sometimes it means a local telephone company, such as a Bell operating company or an independent local telephone company. Sometimes it means any telephone company, including one offering long-distance services.
Tier I - composed of a single path for power and cooling distribution, without redundant components, providing 99.671% availability.
Tier II - composed of a single path for power and cooling distribution, with redundant components, providing 99.741% availability
Tier III - composed of multiple active power and cooling distribution paths, but only one path active, has redundant components, and is concurrently maintainable, providing 99.982% availability
Tier IV - composed of multiple active power and cooling distribution paths, has redundant components, and is fault tolerant, providing 99.995% availability.
UPS - An uninterruptible power supply (UPS) is a device that allows your computer to keep running for at least a short time when the primary power source is lost. It also provides protection from power surges. When power surges occur, an UPS intercepts the surge so that it doesn't damage your computer.
WAN connection - A wide area network (WAN) is a computer network that covers a broad area (i.e. any network whose communications links cross metropolitan, regional, or national boundaries [1]). Less formally, a WAN is a network that uses routers and public communications links [1]. Contrast with personal area networks (PANs), local area networks (LANs), campus area networks (CANs), or metropolitan area networks (MANs), which are usually limited to a room, building, campus or specific metropolitan area (e.g., a city) respectively. The largest and most well-known example of a WAN is the Internet. A WAN is a data communications network that covers a relatively broad geographic area (i.e. one city to another and one country to another country) and that often uses transmission facilities provided by common carriers, such as telephone companies.
