Cases Computer
I Found A Place That Explains What A Server Rack Is!
The morphing of words in the IT world is never ending. The meaning of the words change so fast I can hardly keep up!
Let’s use the name server rack as an example. Before server rack, we referred to to these as an enclosure cabinet. But before I get to comfortable, we also used the following to mean more or less the same thing: computer cabinet, computer rack, rackmount cabinet, data cabinet, data rack and a few more I won’t mention.
I bet you are wondering why this is so important to me? I determined that it is not possible to assume that all the different names refer to the same application. Everone I talk with seems to have a different understanding of what each name means. I found out that some cabinets are 20″ deep and others 42″ deep with all different vent patterns and woe be it unto me if I chose the wrong one for my hardware.
I spent a lot of time searching and found a site that did a good job defining the names to different applications. ISC, Information Support Concepts, Inc. http://www.iscdfw.com has done a good job explaining what their different names actually mean. Since these descriptions helped me, I thought it would be fun to share them here in case there are other confused people like me.
Server Rack: These cabinets and racks are normally used for deep blade servers (made by Compaq, Dell, HP, IBM, Sun and others) that require steady airflow for proper cooling. Typically these racks and enclosures are deeper than conventional rack mount computer cabinets. Standard server enclosure “U” or rack space ranges from 3U to 44U with a depth up to 42″. ISC refers to a server rack as a rack-mount frame without doors or side panels. When these racks are fitted with vented doors and side panels they refer to it as a server cabinet. Another characteristic these enclosures have is square hole rackrails rather than threaded rails. It is common to use a 6mm rack screw and cagenut. This allows rail compatibility for the various manufactures.
Computer Cabinet: ISC classifies a computer cabinet as a shallower rackmount cabinet that is made for cooler running hardware is not as deep as a typical blade server. The side panels and doors on a lot of rackmount computer cabinets are normally not vented because the hardware is not as heat sensitive as a blade server. ISC defines a rackmount computer rack as a cabinet without the doors and side panels. Many centers will put in rows of computer racks that can be ganged together and put on doors or sides panels where necessary. In most cases computer cabinets and computer racks have tapped 10/32 holes in the rackrails which is not compatible for most of today’s blade type servers. ISC has a great selection of rack screws including several 10/32 choices. A typical “U” size for a computer cabinet or rack normally go from around 8U – 44U.
This site helped me a lot in deciding what series was good for my application and wallet. Best of all, I know what a server rack is! Check out http://www.iscdfw.com I suspect it will be worth your time as well.
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