Hi, I think you did not search much. A link I quickly found with google : http://mindache.net/wp/2008/02/18/raid1-to-raid5-with-lvm-resizing This is well explained : it consists in creating a degraded RAID 5 with only 2 disks, transfer your data and then complete the RAID 5. JC Le vendredi 05 décembre 2008 à 20:22 +0000, Bob Williams a écrit :
Hi,
I have two 1TB disks configured as a Linux software RAID1 array and mounted on /home. There is 385GB free space. I am about to get a new machine, which will come with a 1TB disk. After I've removed Windows Vista from this disk I would like to add it to the array. If I stay with RAID1, I'll gain some redundancy, but no extra storage space. That's cool, as I've still got that 385GB free space. I have another, smaller disk to hold the OS partitions.
However, at some stage it might be better to configure the three disks as RAID5. Is it possible to convert a RAID1 array into a RAID5 array without loss of data. If not, it might be better to do the conversion now, while I can still find space to backup /home.
I'd welcome some advice :)
Bob -- Registered Linux User #463880 FSFE Member #1300 GPG-FP: A6C1 457C 6DBA B13E 5524 F703 D12A FB79 926B 994E openSUSE 11.0, Kernel 2.6.25.18-0.2-default, KDE 3.5.10 Intel Celeron 2.53GHz, 2GB DDR RAM, nVidia GeForce 7600GS