> On Wed, May 17, 2006 at 03:19:42PM -0700, k a wrote: > > i want to boot redhat linux through the ide drive and put > > the 6 sata disks on the same raid 5 array. is it possible > > or do i have to build two raid 5 arrays. and lets say the > > hardisk ide that i am using to boot up dies, would it be > > possible to recover the array or should i do software raid > > 1 with the ide drive so use two ide drive incase one dies. > If you use the hardware RAID controller, you can put all the > drives in one raid-5, and still be able to boot if one disk > fails. The 'boot disk' would be the array, so no one disk in the > array would be responsible for booting. > > If you go with software raid-5, things are a little harder due > to the need for linux to load the raid driver before it has > access to the disks, which as you can imagine is a bit > tricky. You'd probably make a partition on two disks that is > mirrored, and add the rest to a RAID-5 array.
There is actually no problem with making a RAID1 (mirrored) array out of all 6 disks. Install a normal MBR on all the disks, and lilo or grub into the raid0 volume, and that way if one of the disks fails, you still have a system that could boot from any disk (even if you have to intervene manually to change the boot order - sometimes disks fail in such a way that the bios thinks they are okay to boot off but they hang). Your partition table would be: part1 - RAID1 - 128mb - /boot (128mb should be big enough to hold a few kernels) part2 - RAID5 - rest of the disk I would normally use LVM on RAID5. If not, you'd probably want a few RAID5 arrays eg swap, /home, /var. >From memory, grub required a little bit of fiddling to persuade it to install on the raid volume, but it was definitely possible and there is documentation on how to do it on the net. Good luck James ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid0709&bid&3057&dat1642 _______________________________________________ Bacula-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/bacula-users
