Re: Understanding BTRFS storage

[Austin S Hemmelgarn]

On 2015-08-26 04:56, George Duffield wrote:

Hi

Is there a more comprehensive discussion/ documentation of Btrfs
features than is referenced in
https://btrfs.wiki.kernel.org/index.php/Main_Page...I'd love to learn
more but it seems there's no readily available authoritative
documentation out there?

I'm looking to switch from a 5x3TB mdadm raid5 array to a Btrfs based
solution that will involve duplicating a data store on a second
machine for backup purposes (the machine is only powered up for
backups).

Two quick questions:
- If I were simply to create a Btrfs volume using 5x3TB drives and not
create a raid5/6/10 array I understand data would be striped across
the 5 drives with no reduncancy ... i.e. if a drive fails all data is
lost?  Is this correct?

Yes, although the striping is at a much larger granularity than a typical RAID0.

- Is Btrfs RAID10 (for data) ready to be used reliably?

Yes, in general it is.

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