2011/5/25 Tom H <[log in to unmask]> > On Wed, May 25, 2011 at 7:05 AM, Florian Philipp <[log in to unmask]> > wrote: > > Am 25.05.2011 12:45, schrieb Zack Yovel: > >> 2011/5/25 Florian Philipp <[log in to unmask] > >> <mailto:[log in to unmask]>> > >> Am 25.05.2011 07:29, schrieb Zack Yovel: > >> > Install SL6 on RAID 0 on GA-890GPA-UD3H (chipset: AMD SB850 ) > >> > > >> > Does anyone know of a raid driver for this motherboard or chipset? > >> > >> Any particular reason why you invest effort in using the onboard > RAID > >> instead of just using software raid (md subsystem instead of dm)? > >> Onboard RAID gives you negligible or even negative performance gains > and > >> locks you in on their disk format. > >> > >> Regards, > >> Florian Philipp > >> > >> I almost feel like I do something wrong :) > >> I want onboard RAID because I want everything raided and I plan a > >> dual-boot with windows server. I believe software RAID of either linux > >> or windows will make it impossible to install the other system on the > >> raided partitions. I would create half of the storage raided in linux > >> and half in windows, but at least windows raid requires converting the > >> hole two disks to dinamic, which will prevent my from installing any > >> other OS on either of them. > >> > >> In short - I have two disks, I want them both on raid 0, and I want > >> dual-boot with windows. > >> If hardware RAID isn't the best solution for this, I'll be happy to > >> learn of another one.. > > > > Well, in that case, onboard RAID really is your only option unless you > > a) invest money in a real hardware RAID controller > > b) replace dual-booting with virtualization > > > >> Excuse my noobish questions, but what do you mean by "md subsystem > >> instead of dm" and by "locks you in on their disk format"? are you > >> talking about MBR vs. GPT? > > > > MD is the kernel subsystem for software RAID. Device mapper (or dm) is > > used for onboard RAID, among other things. In the kernel, they use the > > same code-base but their interfaces and purposes are different. > > You can use mdraid/mdadm to control dmraid/biosraid/fakeraid using > "container" in mdadm.conf (I've never done so but know that it's > possible). So if you have to dual-boot Windows and SL and are using > bios-/fake-raid on the Windows side, you have to use bios-/fake-raid > on the SL side. > > Whether you use dmraid or mdadm to manage the array, you still need > the appropriate dmraid driver. If the SL CD/DVD isn't detecting your > dmraid, I'd suggest that you boot from an Ubuntu Live CD, find out how > it's detecting and assembling the dmraid (since 10.10, these CDs have > had pretty aggressive dmraid capabilities and you users are asking how > to disable the detection in order not to use dmraid at install time), > and find and use the SL equivalent. > Problem is both SL and Ubuntu recognize my raid array as mirror, instead of RAID 0.