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In Computing Marketing-speak , the term blade designates a standardised module which one can plug in to a computer system - after the manner of a changeable blade in a kitchen appliance. Physical server blades supplement processing power; virtual software blades add specialised processing. Physical blade servers have the advantage of increasing the processing density that can be housed in a standard 19-inch Rack designed for electrical equipment and can also reduce cabling complexity. They comprise several processing units, each with one or more CPUs that plug into a blade chassis that in turn is mounted in a 19 inch rack. The blade chassis typically also houses one or more power supplies and additional technology to connect to networks and storage devices. Hardware vendors such as IBM , Sun Microsystems and Hewlett-Packard , and software vendors like Informix (with its DataBlade s) have attempted to popularise the blade approach. Compare the concept of a RAID device as a sort of Computer Storage blade. |
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