12 Open Source Cloud Storage Software to Store and Sync Your Data Quickly and Safely
GlusterFS is a network attached file storage system. Initially, started by Gluster Inc., this project is now under Red Hat Inc. After their purchase of Gluster Inc in 2011. Red Hat integrated Gluster FS with their Red Hat Storage Server changing its name to Red Hat Gluster Storage. It is available for platforms including Linux, OS X, NetBSd and OpenSolaris with some of its parts licensed under GPLv3 while others dual licensed under GPLv2. It has been used as a foundation for academic research.
GlusterFs uses a client-server model with servers being deployed as storage bricks. Client can connect to server with custom protocol over TCP/IP, Infiband or SDP and store files to the GlusterFs server. Various functionalities being employed by it over the files are: file-based mirroring and replication, file-based stripping, load balancing, scheduling and disk caching to name a few.
Other very useful feature of it is that it is flexible i.e. data here is stored on native file systems like: xfs, ext4 etc.
Read More: How to Install GlusterFS in Linux Systems
StackSync is a Dropbox like tool running on top of OpenStack swift which is specially designed to tackle the needs of organizations to sync their data at one place. It us written in Java and released under GNU General public license v3.
Its framework is composed of three main components: a synchronization server, Openstack swift, desktop & mobile clients. While the server processes metadata and logic, Openstack is focused on storing the metadata while desktop and mobile clients help users sync their data to their personal cloud.
StackSync employs various data optimizations that allow it to scale to cater the needs of thousands of people with efficient use of cloud resources. Its other features are: provision of RESTful API as a Swift module which allows mobile apps and other third party applications to use it to sync data, separation between data and metadata which makes it flexible for deployment based on different configurations, provides both Public configuration which is useful for Public Cloud providers and Private configuration which solves the problems of big organizations aiming for a better cloud storage solution.
Git-annex is another file synchronization service developed by Joey Hess, released in October 2010 which also aims to solve file sharing and synchronization problems but independent of any commercial service or central server. It is written in Haskell and available for Linux, Android, OS X and Windows.
Git-annex manages the git repository of the user without storing the session into git again. But instead it stores only the linking to the file in the git repository and manages the files associated to the link at a separate place. It ensures the duplicacy of file which is needed in case recovery of lost information is required.
Further, it ensures availability of file data instantly as and when required which prevents files to present on each system. This reduces a lot of memory overhead. Notably, git-annex is available on various Linux distributions including: Fedora, Ubuntu, Debian etc.