I'd like to meet these people who suggest to use just use linux software raid.  It has its purpose, and we would be using it if it fit the bill.  The computer with $500 worth of hard drives, the huge case and power supply needed to run them, and all that jazz, is probably the best computer in the house. It probably has other expensive components making it useful for gaming, video production, modeling, or other things.  That stuff usually needs to be done in windows.  most of us can not escape windows 100% of the time.  If we do need windows, we are going to want it on the best computer in the house, the one with a raid5 array.

another issue, what if you already have your 2TB raid5 array almost full on a windows computer.  THEN you decide to install linux. what can you do then?  Do you have another 2TB of free space to backup your raid5 array to so you can reformat it? I know I wouldn't. 


your options

1) get a hardware raid card
2) use a different distro
3) never run windows natively on that computer
4) don't use raid at all

number 2 is the mostly likely for people to choose, because all the others require great sacrifice.

There is a 5th option, but it isn't for the faint of heart.  You could try hacking raid 5 support together yourself.  But this isn't the ubuntu way. If you run a custom compiled kernel, is it really still ubuntu? But by asking this question, it can be reasonably assumed that you are either unable or unwilling to try this. I switched to ubuntu because i got sick of fiddling with everything in gentoo, and nothing else i tried was impressive. 

On Wed, Apr 23, 2008 at 6:09 PM, nox216 <nox216@hotmail.com> wrote:
I don't expect this to be fixed anytime soon.

Despite software fake RAID being on a majority of shipping motherboards,
and despite dmraid being in a workable place with the correct kernel
modifications, there just isn't any interest in adding this
functionality to Ubuntu. Most responses consist of "well, use Linux
software RAID." *shrug*

--
dmraid looking for raid45 when kernel uses raid456
https://bugs.launchpad.net/bugs/102973
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