OpenStack是一个开源项目，由Rackspace和NASA于2010年7月共同创建，它的背后有60家厂商支持，包括思科、HP、Intel、IBM、Oracle、Canonical和戴尔，以及云软件供应商，包括和Amazon Web Service竞争的Cloud.com或CirraScale，Savvis，Terremark，它正努力成为基础设施即服务供应商参考的事实标准。
OpenStack提供开放源码软件，建立公共和私有云。 OpenStackd开源项目由社区维护，包括OpenStack计算（代号为Nova），OpenStack对象存储（代号为SWIFT），并OpenStack镜像服务（代号Glance）的集合。 OpenStack提供了一个操作平台，或工具包，用于编排云，支持对其他虚拟机软件的统一管理，包括KVM、Xen、VirtualBox、VMware、Hyper-V。
OpenStack当前主要有三个组件：计算，存储，镜像。
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From Desktop
Windows Key + Tab : Aero [press Tab to cycle between Windows]
Windows Key + E : Windows Explorer is launched.
Windows Key + R : Run Command is launched.
Windows Key + F : Search (which is there in previous Windows versions too)
Windows Key + X : Mobility Center
Windows Key + L : Lock Computer (It is there from the earlier versions as well)
Windows Key + U : Launches Ease of Access
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Problem
Low Latency Transport / Global Atomic Broadcast frequently asked questions
Solution
Q: What is a cluster interconnect?
A: A cluster interconnect is a data path between nodes in a cluster for purposes of interchanging information about managed resources, as well as maintaining cluster membership. In the past the cluster interconnect was incorrectly termed a “heartbeat link”. This term is incorrect because it only refers to a small piece of the actual data traffic on an interconnect. In a VCS cluster the cluster interconnect carries information between nodes on node startup known as a snapshot, information on any change in resource status on any node in the cluster, as well as node to node heartbeat. When CFS or RAC components are added, these components also utilize the cluster interconnect for data traffic such as CFS metadata and RAC Cache Fusion.
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Erlang最初是爱立信为开发电信相关产品而产生。
Erlang是一种面向并发 (Concurrency Oriented)，面向消息（ Message Oriented）的函数式 (Functional)编程语言。
面向并发说明 Erlang支持大规模的并发应用，我们可以在应用中处理成千上万的并发，而不相互影响。面向消息，其实是为并发服务！我们应该都熟悉多线程，熟悉加锁解锁操作，熟悉可能出现的资源竞争与死锁。在 Erlang的世界里，我们可以将轻轻的抹去这些令人苦恼的词汇。 Erlang的世界，每个处理都是独立的个体，他们之间的交互仅仅靠消息！因此不会有死锁，不会有那种痛苦的编程经历。
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wp-syntax支持以下语言：
abap, actionscript, actionscript3, ada, apache, applescript, apt_sources, asm, asp, autoit, avisynth, bash, bf, bibtex, blitzbasic, bnf, boo, c, c_mac, caddcl, cadlisp, cil, cfdg, cfm, cmake, cobol, cpp-qt, cpp, csharp, css, d, dcs, delphi, diff, div, dos, dot, eiffel, email, erlang, fo, fortran, freebasic, genero, gettext, glsl, gml, bnuplot, groovy, haskell, hq9plus, html4strict, idl, ini, inno, intercal, io, java, java5, javascript, kixtart, klonec, klonecpp, latex, lisp, locobasic, lolcode lotusformulas, lotusscript, lscript, lsl2, lua, m68k, make, matlab, mirc, modula3, mpasm, mxml, mysql, nsis, oberon2, objc, ocaml-brief, ocaml, oobas, oracle11, oracle8, pascal, per, pic16, pixelbender, perl, php-brief, php, plsql, povray, powershell, progress, prolog, properties, providex, python, qbasic, rails, rebol, reg, robots, ruby, sas, scala, scheme, scilab, sdlbasic, smalltalk, smarty, sql, tcl, teraterm, text, thinbasic, tsql, typoscript, vb, vbnet, verilog, vhdl, vim, visualfoxpro, visualprolog, whitespace, whois, winbatch, xml, xorg_conf, xpp, z80
使用格式：<pre lang=”java” line=”1″> code </pre>
