Re: Understanding BTRFS storage

[Austin S Hemmelgarn <ahferroin7@gmail.com>]

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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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