In 1990s, UNIX servers were used commonly. They were used for auxiliary systems of mainframe computers at first and it was called “client-server systems.” Later they were used as foundation systems configured by UNIX servers only. The reason of market acceptance for UNIX servers is it has portability among different server vendors. In that era, many server vendors started to produce their own server hardware, because semiconductor technology grew rapidly and it made possible for vendors to produce servers with better cost performance. Those hardware vendors needed the OS working on their hardware and UNIX fitted those requirements. UNIX OS was used widely, but each vendor added their own features on it, and the UNIX could not be common platform beyond different hardware. They grew as different OSs some years later. The market considers UNIX OS was a part of server hardware. In 2000’s, some companies or organizations started to use PC-servers for their important information systems. Here we call high-performance reinforced personal computer as PC-server, for availability of enterprise system’s production use. Formerly, a PC was used as personal computing only, we assume a PC has x86 architecture processors produced by Intel or AMD, etc. Windows Server OSs of Microsoft or Linux OS of many distributions are usable for PC-servers. Generally, the server vendors developing PC-server hardware doesn’t prepare their own OS, they design it with compatibility for Windows Server OSs or Linux distributions. Therefore users can use same OS even if they buy different vendor’s PC-server. Those situation bring market competition and price of PC-server hardware become low. PC-servers are commonly used for non-large enterprise business systems in recent years.
Posted on: Mon, 11 Nov 2013 02:01:21 +0000
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