* synchronously or asynchronously - With synchronous mirroring, applications are notified of write completions after the writes have been carried out on all hosts. With asynchronous mirroring, applications are notified of write completions when the writes have completed locally, which usually is before they have propagated to the other hosts.
== Filesystems ==
=== Gluster ===
[https://www.gluster.org/ GlusterFS] [[wp:GlusterFSGluster]] is a software-defined scalable network filesystem. Using common off-the-shelf hardware, you can create large, distributed storage solutions for media streaming, data analysis, and other data- and bandwidth-intensive tasksfile system. Gluster was aquired by [[RedHat]] in 2011. (And they bought Ceph in 2014.) [https://gluster.readthedocs.io/en/latest/Quick-Start-Guide/Quickstart/ Docs]
=== MooseFS ===