Solid-State Disks: Pushing the Envelope in Blade Server Design
Software Standardization
Hardware standards that guarantee compatibility between offerings from multiple vendors are most effective when complemented by the development of software standards that define operating system capabilities and mechanisms for efficiently using and managing standard hardware. Over the years, software standards for programming languages, operating system interfaces, and application middleware have enhanced application portability and interoperability, reducing reliance on any single vendor solution.
The Carrier Grade Linux (CGL) specification, developed under the stewardship of the Open Source Development Laboratory (OSDL), exemplifies this trend. CGL was developed in collaboration with the Service Availability Forum, the Free Standards Group, multiple Linux vendors, and telecommunications and networking firms. CGL compliance provides interoperability and capability guarantees for Linux distributions targeted at the telecommunications and networking markets. The CGL specification defines the software platform capabilities that developers can rely on in order to build reliable, available, and serviceable software solutions that take full advantage of the capabilities provided by hardware specifications such as CPCI and ATCA.
Hardware and software standards developed in an open environment push for the betterment and requirements of an industry rather than the benefit of any particular vendor. As discussed in more detail later in this white paper, compliance with CGL 2.0 and beyond is demonstrated by openly publishing details about how each mandatory requirement was satisfied. This preserves the spirit of an open specification between software partners while enabling customers to see proof of compliance. Open demonstrations of compliance also enable CGL users to do an independent technical assessment of a particular CGL implementation to verify its suitability for their needs.
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