Alexander Dalloz wrote: > 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 Instead of fake-raid controller, I suggest software RAID via mdadm (Linux md). Ljubomir