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...# is /dev/sdb2 # /dev/sdb5 /home btrfs rw,relatime 0 0 $ time sync real 1m5.552s user 0m0.000s sys 0m2.102s $ time sync real 1m16.830s user 0m0.001s sys 0m1.490s $ df -h / /home Filesystem Size Used Avail Use% Mounted on /dev/root 47G 33G 7.7G 82% / /dev/sdb5 652G 216G 421G 34% /home $ btrfs fi df / Data: total=35.48GB, used=29.86GB System, DUP: total=16.00MB, used=12.00KB System: total=4.00MB, used=0.00 Metadata, DUP: total=4.50GB, used=1.67GB $ btrfs fi df /home Data: total=310.01GB, used=209.53GB System, DUP: total=8.00MB, used=48.00KB System: total=4.00MB, used=...

Currently I''m trying to figure out the best zfs layout for a thumper wrt. to read AND write performance. I did some simple mkfile 512G tests and found out, that per average ~ 500 MB/s seems to be the maximum on can reach (tried initial default setup, all 46 HDDs as R0, etc.). According to http://www.amd.com/us-en/assets/content_type/DownloadableAssets/ArchitectureWP_062806.pdf I would