----- Original Message ----- > > I'm currently fighting to get GlusterFS replica in an HPC environment > but the "wasting half the space" argument is hard to fight when > there's > a tight budget. There really is no waste at all, the space is being > used for full server redundancy (IMHO you need server redundancy, not > just disk redundancy) and in some use-cases, increased performance > (in > other use-cases replica is slower). I think this gets to the heart of the matter. This is very much on our minds as we look at future roadmaps. For now, replica 2 + RAID underneath is a valid solution for the vast majority of use cases. There shouldn't be many cases where replica 3 is absolutely necessary - not when you utilize a decent RAID card. To pose the issue in a slightly different light, what would you want future behavior to be? Is erasure coding something that you view as essential in the near future? -JM
