IEC Dimensions of Mechanical Structures of the mm (19 in) Series Part 1: Panels and Racks. IEC Mechanical structures for electronic equipment – Dimensions of mechanical structures of the ,6 mm (19 in) series – Part Basic. IEC Dimensions of Mechanical Structures of the mm (19 Inch) Series Part 2: Cabinets and Pitches of Rack Structures.
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inch rack – Wikipedia
This page was last edited on 12 Decemberat Slides or rails for computers and other data processing equipment such as disk arrays or routers often need to be purchased directly from the equipment manufacturer, as there is no standardization on such equipment’s thickness measurement from the side of the rack to the equipment or means for mounting to the rail. The rack unit is a measure of vertical spacing and is common to both the 19 and 23 inch racks. Square-hole racks allow boltless mounting, such that the rack-mount equipment only needs to insert through and hook down into the lip of the square hole.
Examples include telephone exchanges, network cabling panels, broadcast studios and some government and military applications. A blade server enclosure might require 10U. Touring musicians, theatrical productions and sound and light companies use road case racks.
When rack rails are too thin to tap, rivnuts or other threaded inserts can be used, and when the particular class of equipment to be mounted is known in advance, some of the holes can be omitted from the mounting rails. Two-post racks are most oec used for telecommunication installations. Larger cases are further reinforced with additional plywood or sheet metal. The amount of motion and uec stress depends on the structural characteristics of the building and framework in which the equipment is contained, and the severity of the earthquake.
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A standard inch server rack cabinet is typically 42u in height, 19 inches Heavy equipment or equipment which is commonly accessed for servicing, for which attaching or detaching at all four corners simultaneously would pose a problem, is often not mounted directly onto the rack but instead is mounted via rails or slides. List of International Electrotechnical Commission standards.
The inch rack format has remained constant while the technology that is mounted within it has changed considerably and the set of fields to which racks are applied has greatly expanded. There are a multitude of specialty server racks including soundproof server racks, air conditioned server racks, NEMA ief, seismic rated, open frame, narrow, and even miniature inch racks for smaller applications. With the prevalence of inch racks 602977 the Telecoms industry, the same practice is also common, but with equipment having inch and inch brackets available, enabling them to be mounted in existing racks.
These aisles may themselves be enclosed into a cold air containment tunnel so that cooling air does not travel to other parts of the building where it is not needed or mixes with hot air, making it less efficient. Road cases are typically made from polyvinyl chloride PVC laminated plywood sides, joined by extruded aluminum edging, steel corners, handles and latches.
Hole spacing is 25 millimetres 0. Equipment designed to be placed in a rack is typically described as rack-mountrack-mount instrumenta rack mounted jeca rack mount chassissubrackrack mountableor occasionally simply shelf. As a result, 4-post racks have become common, with such racks featuring a mirrored pair of rear mounting posts.
The First Stored Program Computer. The gap between the posts is millimetres Older equipment meant ief round-hole or tapped-hole racks can still be used, with the use of cage nuts made for square-hole racks. Wikimedia Foundation servers as seen from the front.
Two-post racks provide two vertical posts.
Archived from the original on In the case of network equipment, it may be necessary to unplug 50 or more cables from the device, remove the device from the rack, and then disassemble the device chassis to 60927 the fans. A third common use for rack-mounted equipment is industrial power, control, and automation hardware.
A pair of rails is mounted directly onto the rack, and the equipment then slides into the rack along the rails, which support it. Since the mounting hole arrangement is vertically symmetric, it is possible to mount rack-mountable equipment upside-down.
A series of studies iiec to the adoption of frames 7 feet 2. This gap 62097 a bit of room above and below an installed piece of equipment so it may be removed without binding on the adjacent equipment.
Production of clearance-hole racks is less expensive because tapping the holes is eliminated and replaced with fewer, less expensive, cage nuts. The height of a rack can vary from a few inches, such as in a broadcast console, to a floor mounted rack whose interior is 45 rack units ied George, Chassis Slide MechanismU. Computer servers designed for rack-mounting can include a number of extra features to make the server easy to use in the rack:.
The distance of the right edge of the right mounting rail to the left edge of the left mounting rail is millimetres Rack-mountable equipment is usually designed to occupy some integer number of U.
The next innovation in rack design has been the lec rack. These posts are typically heavy gauge metal or extruded aluminum. Tapping large numbers of holes 602997 may never be used is expensive; nonetheless tapped-hole racks are still in use, generally for hardware that rarely changes.