[linux-lvm] raid10 to raid what? - convert
tanstaafl at libertytrek.org
Wed Oct 18 05:36:02 UTC 2017
On 10/17/2017, 4:57:10 PM, Stuart D. Gathman <stuart at gathman.org> wrote:
> First off, raid10 is a linux specialty (I didn't know LVM supported it,
Eh? Not sure what you mean by that, RAID10 is used by many hardware RAID
controllers, so is certainly not some kind of esoteric linux
'specialty', unless I misunderstood.
I've been using RAID10 exclusively for over 10 years ever since I
narrowly avoided a major catastrophe with RAID5.
> and is not the same as raid1+0 (raid1 on top of raid0).
Not according to everything I've ever read about it... for example:
> But this is not certain as raid10 works perfectly well with 2 or 3
> disks, including the redundancy.
You must be talking about something else... RAID10 requires at least 4
disks, and always an even number, although most RAID controllers support
the designation of at least one hot spare (so it will auto-rebuild using
the hot spare in the event of a failure). Been using this configuration
in my 5 drive QNAP NAS's for along time.
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