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EDM pallets 70mm x 70mm x 10 mm 4 threaded holes    US $299.98

EDM pallets 50mm x 50mm x 10 mm 2 threaded holes    US $69.98

EDM pallets 50mm x 50mm x 10 mm 4 threaded holes    US $9.98

I Thought All Rackmount Computer Cabinets Were The Same!

The IT arena is great at morphing words. 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? Well, I found out that I can't assume that all the different  names mean the same thing. What's worse, I could talk to 5 different vendors and they all have a different interpretation of what each name represents. I discovered that rackmount cabinets can range from 20" deep to more than 42" deep and the trouble that could happen if I selected the wrong size.

After a lot of research, I found a site that at least defines the different names to specific 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. In most cases these racks are deeper than a normal shallow computer cabinet.ISC has server enclosures with "U" space ranging from 3U to 44U and with a usable depth up to 42". ISC refers to a server rack as a rack-mount frame without doors or side panels. When vented doors and side panels are put on a server rack, it then becomes a server cabinet. A server rack generally will have rackrails with square holes rather than tapped or threaded rails. It is common to use a 6mm rack screw and cagenut. This allows rail compatibility for the various manufactures.

Computer Cabinet: ISC defines computer cabinets as a more traditional rack mount enclosure that is designed for hardware that runs cooler and is not as deep as a rack mount server enclosure rack. Many times the doors and side panels on a rack-mount computer cabinet are not vented or perforated because the heat build up is not as severe as for the deep hot running servers used in server racks. ISC defines a rackmount computer rack as a cabinet without the doors and side panels. Many network managers gang their computer racks so they only have to use one seet of end panels. 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.

I found this site very infomative and helped me know what series best fit my budget and application. Guess what? I now have a pretty good idea as to what a server rack is! Check out http://www.iscdfw.com I suspect it will be worth your time as well.

Installing HP Rails in a Threaded Hole Server Rack