Types of GlusterFS Volumes

Distributed	- default type - distributes data evenly across nodes (with 100 files, 50 will be on node1 and 50 will be on node2) - a file is located on one brick only - faster than replicated - no redunduncy - no automatic failover - volume size is the sum of brick sizes - sample command:   gluster volume create test-volume server1:/exp1 server2:/exp2 server3:/exp3 server4:/exp4
Replicated	- w/ redunduncy - a file appears on all bricks - volume size is the size of each brick - sample command:   gluster volume create test-volume replica 2 transport tcp server1:/exp1 server2:/exp2     * "replica 2" means keep 2 copies of data at a given time
Distributed-Replicated	- adjacent bricks are replicas of each other     * e.g with 8 bricks, brick1 and brick2 are replicas of each other, brick3 and brick4 are       replicas of each other, and so on.. - sample command:   gluster volume create test-volume replica 2 transport tcp server1:/exp1 server2:/exp2 server3:/exp3 server4:/exp4
Striped	- a file is divided in chunks - each chunk is located on each bricks - faster access - no redunduncy - sample command:   gluster volume create test-volume stripe 2 transport tcp server1:/exp1 server2:/exp2