Norm Schklar On Thu, May 30, 2013 at 8:15 PM, John R Pierce <pierce at hogranch.com> wrote: > On 5/30/2013 4:59 PM, Norman Schklar wrote: > > I plugged in the other 3 drives and went to the raid setup in Centos. > > I created a raid 5 with the three disks. It doesn't allow using the 1st > os > > boot disk in the raid. > > Should I use a usb drive to host an install then once it's running > install > > the system again In the raided drives? > > booting from soft raid has limitations. the /boot partition containing > grub and the kernel either can't be raid or it can be mirrored, while > the root partition can be full raid > > I generally avoid raid5/6 except for large scale bulk nearline archival > storage, and use raid1 or 10 for all 'operational' stuff. I also tend to > use 2 drives just for the OS and software, then seperate drives in > whatever appropriate raid configuration for your large data (sql > databases, websites, file server spaces, etc).... but I also don't like > deploying raid without online hot spares. raid's only function is uptime > availability in face of drive failures, and to aggreagate many drives > into a single larger volume with potentially higher performance, its NOT > a substitute for backups. > > The primary problem I have is that anaconda does not recognize my raid 10. To get past that problem, I broke the Raid and used one drive. I didn't find a place to adjust the drives during the install onto only on drive. This is a new install, so not much to mess up. Centos 6.4 on an Intel server.