glusterfs

http://www.howtoforge.com/high-availability-storage-with-glusterfs-on-centos-5.4-automatic-file-replication-mirror-across-two-storage-servers
http://prefetch.net/blog/index.php/2011/11/13/creating-clustered-file-systems-with-glusterfs-on-centos-and-fedora-linux-servers/
http://prefetch.net/blog/index.php/2011/11/30/another-interesting-finding-about-gluster-replicas/
http://www.linuxreaders.com/2012/06/install-configure-glusterfs-centos-rhel.html
http://www.howtoforge.com/creating-an-nfs-like-standalone-storage-server-with-glusterfs-on-debian-lenny
http://www.gluster.org/community/documentation/index.php/Main_Page

http://www.abclinuxu.cz/clanky/openafs-instalace
http://www.fi.muni.cz/~kas/p090/referaty/2005-jaro/st/distribuovane_souborove_systemy.html
http://support.zcu.cz/index.php/Souborov%C3%BD_syst%C3%A9m_AFS
http://www.openafs.org/
http://www.stream.cz/uservideo/612240-distribuovany-souborovy-system-openafs-michal-svamberg

glusterfs