Im using a mdadm software raid system on my new server which runs 3x120GB ssd drives.
Currently, this is the preinstalled configuration that came with the server
cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sdb2[1] sda2[0] sdc2[2]
96211904 blocks [3/3] [UUU]
md1 : active raid1 sda1[0] sdc1[2] sdb1[1]
20478912 blocks [3/3] [UUU]
unused devices: <none>
I would like to have more space available than 120gb, because right now its using only 1 drive for the data, 1 in raid + the other 1 in spare backup.
My question goes as is : Is it possible to have 3 drives running a raid 1 ?
Example : 3x120GB = 360GB. Have 180GB available and 180GB in raid
Any help would be really appreciated.
For more information on my current setup to show the 120GB only
df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 16G 208K 16G 1% /dev
tmpfs 16G 0 16G 0% /dev/shm
/dev/md1 20G 1.3G 17G 7% /
/dev/md2 91G 200M 86G 1% /vz
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/etc/named
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/var/named
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/etc/named.conf
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/etc/named.rfc1912.zones
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/etc/rndc.key
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/usr/lib64/bind
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/etc/named.iscdlv.key
/dev/md1 20G 1.3G 17G 7% /var/named/chroot/etc/named.root.key