Why did edgy->feisty install mdadm (I don't have RAID)?

[Adam Funk]

On 2007-04-25, Derek Broughton wrote:

>> I don't have any RAID drives, but the upgrade from Edgy to Feisty
>> installed mdadm.  (A friend reported the same thing.)
>> 
>> Anyone know why?  And is there any reason not to remove it?
>
> I didn't think it was possible to have a default edgy without mdadm,
> either - at least I stopped fighting it before edgy was officially
> released.
>
> There's no reason not to remove it if you don't have RAID - but it will
> remove some of the virtual packages that the upgrade folks tell us we need
> for the next clean upgrade (but definitely don't need _until_ then).

So in conclusion: it isn't breaking anything, so I shouldn't mess with
it.

Thanks.