> From: Dan Ritter [mailto:d...@randomstring.org] > > > In btrfs and zfs, it goes like this: > > mirror dev0 dev1 dev2 > > or > > raid1 dev0 dev1 dev2 > > This makes a 3-way mirror. Total usable capacity of a single disk, triple > redundant. > > This is incorrect for btrfs. Assuming 3 identical devices, btrfs > raid1 creates a 2-way replication with a capacity of 1.5x a > single device.
Ahh. Thanks for that clarification. So in btrfs, raid1 means something similar to raid-1e. Whereas, in zfs, raidz is something similar to raid-1e. So in reality, the btrfs raid1, and the zfs raidz both have the characteristics: 1 disk of redundancy performance should be approx N-1 disks times a single disk Incrementally expandable by adding individual disks? I know raidz is not. _______________________________________________ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss