集群文件系统Lustre简介
Lustre名字是由Linux和Clusters演化而来，是为解决海量存储问题而设计的全新文件系统。是下一代的集群文件系统，可支持10,000个节点，PB的存储量，100GB/S的传输速度，完美
的安全性和可管理性。
目前Lustre已经运用在一些领域，例如HP SFS产品等。
集群存储简介:
在集群里，一组独立的节点或主机可以象一个系统一样步调一致地工作。整个集群只有唯一
的命名空间。厂商们也已经制造了一些软件和硬件设备，它们可以把不相干的文件系统融合成只使用一个命名空间的文件系统。用户可以访问并共享其他用户的数据，而无需考虑是什么介质或其所处的是哪台主机。
集群存储系统需要解决的最基本的问题：
（1）提供共享访问数据，便于集群应用程序的编写和存储的负载均衡；
（2）提供高性能的存储，在I/O级和数据吞吐率方面能满足成百上千台规模的Linux集群服务器聚合访问的需求
与分布式文件系统相比：
数据不需要从一个文件系统拷贝或复制到另一个文件系统，通过集群系统共享应用和数据的任务执行起来要比在单独的设备上执行快得多；
集群可以为文件和文件系统提供更多的空间;
因为只需要管理一个文件系统，而不再是每个存储设备或主机都需要一个文件系统，管理也更容易了；如果集群内的某台服务器出现了故障，另一台服务器就可以把它的工作接手过来，故障恢复也成为了现实；
用户也可以同时对位于其网络上的存储设备里的所有文件进行访问。
本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/61187/showart_1824767.html 太古老了，有新的吗？ Lustre的主要三种版本
Lustre Release Schedule
Lustre feature releases follow a release train model, with feature releases targeted every six months. Maintenance releases are targeted every three months on the current maintenance branch.Maintenance releases for older maintenance branches are on an as-needed basis.
Lustre Maintenance Releases
The HPDD team at Intel invests a huge amount of time and resources into ensuring that every release is of high quality. However, we recognize that many Lustre users would rather run a release that is well-proven in production, and will be supported over a longer time, even if it means foregoing some of the newer features. To meet the needs of these customers, Intel designates a certain release to be its long-term maintenance release stream and produces regular bugfix-only updates for this release stream. These releases are what the majority of Intel's customers choose to run in production. You can find out more detailed information in theLustre 2.5 Changelog.
Download the latest maintenance release here: http://downloads.whamcloud.com/public/lustre/latest-maintenance-release/
Lustre Feature Releases
Intel and the Lustre community are continually developing new features required by future versions of Lustre. Users who want to use these capabilities can access them first in feature releases. Feature releases will also contain all the latest bug fixes from previous releases. Periodically, one of the new feature releases will be designated the new long-term maintenance release stream, though not every feature release will have an associated long-term maintenance release stream. You can find out more detailed information in the Lustre 2.6 Changelog.
Download the latest feature release here: http://downloads.whamcloud.com/public/lustre/latest-feature-release/
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