<quote who="Jason Lim">
> For example, http://www.arcoide.com/ . To quote the function we're looking
> at " the DupliDisk2 automatically switches to the remaining drive and
> alerts the user that a drive has failed. Then, depending on the model, the
> user can hot-swap out the failed drive and re-mirror in the background.".
> So it "re-mirrors" in the background... how do they perform that
> reliabily?
That's just RAID 1, which has done it since the dawn of time [1]. You can
achieve the same thing with Linux software RAID; you just pull out one of
the drives and you have half a mirrored RAID set. It's pretty neat to watch
/proc/mdstat as your drives are resyncing, too. ;)
The advantage you get with this hardware is the hot-swap rack... and that's
about it.
- Jeff
[1] May not be chronologically correct.
--
"A rest with a fermata is the moral opposite of the fast food
restaurant with express lane." - James Gleick, Faster
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