doc: Move admin-guide to markdown format.

Editing markdown is probably more easier than xml.

pandoc can then be used for conversion to html, pdf and any other necessary
formats. Note that pandoc has the following input and output formats:

Input: markdown and (subsets of) Textile, reStructuredText, HTML, LaTeX, and
DocBook XML.

Output:plain text, markdown, reStructuredText, XHTML,  HTML  5,  LaTeX
(including beamer slide shows), ConTeXt, RTF, DocBook XML, OpenDocument XML,
ODT, Word docx, GNU Texinfo, MediaWiki markup, EPUB, Textile, groff man pages,
Emacs Org-Mode, AsciiDoc, and Slidy, Slideous, DZSlides, or S5 HTML slide shows.
It can also  pro‐ duce PDF output on systems where LaTeX is installed.

All documentation changes can be submitted as changes to markdown and we can
attempt a periodic documentation refresh on gluster.org.

Change-Id: I5dcf7f79184cd6b6d62ce7065d2faa352622f6ac
Reviewed-on: http://review.gluster.org/5232
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
Tested-by: Anand Avati <avati@redhat.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/doc/admin-guide/en-US/markdown/gfs_introduction.md b/doc/admin-guide/en-US/markdown/gfs_introduction.md
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+Introducing Gluster File System
+===============================
+
+GlusterFS is an open source, clustered file system capable of scaling to
+several petabytes and handling thousands of clients. GlusterFS can be
+flexibly combined with commodity physical, virtual, and cloud resources
+to deliver highly available and performant enterprise storage at a
+fraction of the cost of traditional solutions.
+
+GlusterFS clusters together storage building blocks over Infiniband RDMA
+and/or TCP/IP interconnect, aggregating disk and memory resources and
+managing data in a single global namespace. GlusterFS is based on a
+stackable user space design, delivering exceptional performance for
+diverse workloads.
+
+![ Virtualized Cloud Environments ][]
+
+GlusterFS is designed for today's high-performance, virtualized cloud
+environments. Unlike traditional data centers, cloud environments
+require multi-tenancy along with the ability to grow or shrink resources
+on demand. Enterprises can scale capacity, performance, and availability
+on demand, with no vendor lock-in, across on-premise, public cloud, and
+hybrid environments.
+
+GlusterFS is in production at thousands of enterprises spanning media,
+healthcare, government, education, web 2.0, and financial services. The
+following table lists the commercial offerings and its documentation
+location:
+
+  ------------------------------------------------------------------------
+  Product     Documentation Location
+  ----------- ------------------------------------------------------------
+  Red Hat     [][]
+  Storage     
+  Software    
+  Appliance   
+
+  Red Hat     [][1]
+  Virtual     
+  Storage     
+  Appliance   
+
+  Red Hat     [][2]
+  Storage     
+  ------------------------------------------------------------------------
+
+  [ Virtualized Cloud Environments ]: images/640px-GlusterFS_3.2_Architecture.png
+  []: http://docs.redhat.com/docs/en-US/Red_Hat_Storage_Software_Appliance/index.html
+  [1]: http://docs.redhat.com/docs/en-US/Red_Hat_Virtual_Storage_Appliance/index.html
+  [2]: http://docs.redhat.com/docs/en-US/Red_Hat_Storage/index.html