Re: measuring RAID arrays performances

[Richard Hector <richard@walnut.gen.nz>]

On 26/05/13 15:15, Stan Hoeppner wrote:
> First there is no such thing as "RAID0".  Second, "striping" is only fit
> for temporary data.  The OP is concerned with permanent data storage.

>From mdadm(8):

> Currently, Linux supports LINEAR md devices,  RAID0  (striping),
> RAID1  (mirroring),  RAID4,  RAID5, RAID6, RAID10, MULTIPATH,
> FAULTY, and CONTAINER.

And:

> -l, --level=
>              Set  RAID  level.   When  used with --create, options
>              are: linear, raid0, 0, stripe, raid1, 1,
>              mirror, raid4, 4, raid5, 5, raid6, 6, raid10, 10,
>              multipath, mp, faulty, container.  Obviously
>              some of these are synonymous.

While I agree that RAID0 is a misnomer, since there's no redundancy, we
have to accept that that's what it's called by the documentation and the
tools.  Or at least, complain (and/or submit patches) to the maintainers
of the documentation and the tools, rather than here.

Richard