Tim, >From what I remember it's best to set it up when you installing the system, then you can install the bootloader to /boot in RAID 1.
https://blog.sleeplessbeastie.eu/2013/10/04/how-to-configure-software-raid1-during-installation-process/ is what I followed. Thanks, Edmund On 18 September 2015 at 22:11, Tim McDonough <[email protected]> wrote: > I've used Debian Linux for a number of years but up until now always with a > single hard drive. > > I want to build a new system that will have a pair of 1TB drives configured > as a RAID-1 mirror. In reading the mdadm Wiki the discussion begins with > installing mdadm. > > My goal is to have a system where if either drive fails things will a) > continue to run from a single drive, and b) be able to replace the failed > drive with a new one of the same size and have the system rebuild into a > mirrored array again. > > It is not clear to me how I need to begin the installation sequence. > > My question: Do I install Debian to a single drive and will installing mdadm > then allow me to add the second disk and setup RAID? Do I need to configure > each drive in some way before installing Debian and then mdadm? > > If there is an up-to-date "how to" that describes this please just point me > there. I have not found anything that seems to start at the point where I > just have bare metal. > > Regards, > > Tim >
