Just along these lines, would it be possible for me to break RAID 1 on the two internal drives into RAID 0 and then mirror that new RAID 0 array onto a SATA drive using RAID 1 without loosing any data? I used JFS as the file system for the RAID 1 array, so that may have to be changed to XFS as you cannot dynamically expand JFS to the best of my knowledge. -Hal Kai Schaetzl wrote: > Tom Brown wrote on Tue, 02 Dec 2008 17:29:06 +0000: > > >> http://tldp.org/HOWTO/Software-RAID-HOWTO-5.html >> > > unfortunately that and the mini-howto are both very much outdated. Many of > the stuff it mentions (like mkraid, /etc/raidtab) is not part of the > distro anymore. You use mdadm nowadays. Those parts that contain mdadm > commands are still valid. > > Does this "Silicon Image SATA controller" not include Hardware RAID by > chance? > The basic steps for software-RAID are: > - decide about the partitions the RAID devices will be based on > - if it is used only for data you may probably want to have just one RAID > partition: > mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda /dev/sdb > (I assume you can use sda and sdb. I always use several RAID partitions, > so I never used the whole disk.) > put LVM on it: > pvcreate /dev/md0 > vgcreate myvolumegroupname /dev/md0 > - creates vg myvolumegroupname on it > - start adding your logical volumes: > lvcreate -L50G --name myname myvolumegroupname > - adds a 50G logical volume named myname > - format that lv: > mkfs.ext3 /dev/myvolumegroupname/myname > - copy any data you like from the old drives > - add the mount points to fstab > - if you don't boot from the RAID partition you are done now > > > Kai > >