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[Discuss] On Btrfs raid and odd-count disks

Subject: [Discuss] On Btrfs raid and odd-count disks
From: blu at nedharvey.com (Edward Ned Harvey (blu))
Date: Thu, 11 Apr 2013 01:27:13 +0000
In-reply-to: <1365608095.v2.mailanyonewebmail-496295@fuseweb2c>
References: <1365608095.v2.mailanyonewebmail-496295@fuseweb2c>

> From: discuss-bounces+blu=nedharvey.com at blu.org [mailto:discuss-
> bounces+blu=nedharvey.com at blu.org] On Behalf Of joe at polcari.com
> 
>   How does raid 1 with an odd number of disks earn the distinction of being
> called RAID?If you lose one disk, you've lost data. Any disk is a single point of
> failure. What's the point?

You're confusing raid1 (mirroring) with raid0 (striping)

btrfs raid1 is more like raid1-e, where all data is redundantly stored on any 2 disks, selected from N disks in the set.

References:
- [Discuss] On Btrfs raid and odd-count disks
  - From: joe at polcari.com (joe at polcari.com)

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