No announcement yet.

Btrfs RAID 0/1 Benchmarks On The Linux 4.1 Kernel

  • Filter
  • Time
  • Show
Clear All
new posts

  • #11
    Originally posted by duby229 View Post
    Theoretically RAID1 can be as fast as all disks combined for sequential reads as long as the RAID controller supports proper load balancing.
    That's disk based raid1, btrfs raid1 is different: btrfs raid 1 on data means it has a copy of your file on at least one other disk. It uses the checksums to see which one is correct.
    In that respect, btrfs is so much better than block based raid1 because btrfs knows which copy is not corrupt.
    Btrfs raid works on "file level" (extent level is more like it I guess), so on a 2 disk raid 1 the layout on one disk can be totally different from the other disk.
    So as soon as BTRFS is really trustworthy stable, I will use it on bare disks, and scrap my md-raid. But for now md-raid is proven technology and fast too.


    • #12
      Looking forward to the RAID 10 tests as I suspect that's what almost everyone using BTRFS RAID today is using including myself (6x 2Tb SATA drives).