Am 24.06.2011 14:24, schrieb Steve Campbell: > I've done a little research, and can't really find out why it happens, > but on one server I have built, I get the old fashion /dev/sda1, > /dev/sda2 type partitions and on another server I get the /dev/mapper > style partitions. Both machines are hardware raided (before the install) > and both machines are Centos 5.5 64 bit, using the same set of CDs to > install from. > > Can someone please explain why this happens? I'm not sure it matters, so > this is just a curious bother. The machines are different brands with > different raid controllers. Both were partitoned using the "custom > layout" when installed. I'm thinking I must have overlooked a checkbox > or something during the install. > > This is not a big deal, not a problem, it's just an itch in my brain. > > Thanks for any explanation. > > steve campbell The machine with the /dev/sda has a true hardware RAID controller. The machine with a /dev/mapper device has just a fake RAID controller, thus a dm-raid device. Alexander