Workload: VM hosting with sharding enabled, replica 3 (with or without
distribution, see below)
Which configuration will perform better:
a) 1 ZFS disk per brick, 1 brick per server. 1 disk for each server.
b) 1 ZFS mirror per brick, 1 brick per server. 1 disk for each server.
c) 1 ZFS disk per brick, 2 bricks per server (with distribution). 4
disks on each server.
d) 1 ZFS mirror per brick, 2 bricks per server (with distribution) 4
disks on each server.
e) any other combination of "c" or "d" by increasing the
number of
disks per server.
I think that "distribution" ('c' or 'd') would give me
better
performance, as in both reads and writes, multiple disks are involved,
as long Gluster tries to always use the maximum number of bricks,
during distribution.