Hi Phillip,
On Fri, May 14, 2021 at 10:28:52AM -0400, Phillip Susi wrote:
> Andy Smith writes:
> > While the *layout* would be identical to RAID-1 in this case, there
> > is the difference that a single threaded read will come from both
> > devices with RAID-10, right?
>
> No, since the data is not striped, you would get *worse* performance if
> you tried to do that.
Are you absolutely sure about this? Previous posts from Neil and
others seem to contradict you:
https://www.spinics.net/lists/raid/msg47219.html
https://www.spinics.net/lists/raid/msg47240.html
and what I have tested and observed in the past backs up the theory
that a single threaded read against a Linux RAID-10 can use n
devices whereas a single-threaded read against Linux RAID-1 will
only use 1 device.
Cheers,
Andy
