I need to install a software raid-0 array on a Ubuntu 12.04 server with
mdadm through commandline (SSH).
The drive setup is as follows:
SDA = OS SSD
SDB = HDD for raid 0
SDC = HDD for raid 0
I added a 4th drive to my 3 disks RAID-5 software array on Ubuntu 12.04 via mdadm (software raid).
My RAID array contained /dev/sdb1, dev/sdc1 and /dev/sdd1.
I used that command to add a 4th drive :
mdadm --add /dev/md0 /dev/sde
Then, I upgraded the array to transform it into a RAID-6 raid using that :
mdadm --grow /dev/md0 --raid-devices 4 --level 6 --backup-file=backup/raid-backup-file
So, I've created a RAID 1 array using two 500 GB hard drives.
I used a Linux Mint Boot Disk, and then used mdadm to create the RAID 1 array using 2 hard drives, each which has a single primary partition.
This was accomplished via:
mdadm --create --verbose --metadata=1.0 /dev/md0 --level=mirror --raid-devices=2 /dev/sda /dev/sdb
The array build took about an hour.
At this point, I'd like to i