linux softraid setup which drives are mirrors

#Linux softraid setup which drives are mirrors how to#

Use the device id in fstab and not /dev/md0 because it may not be persistent across reboot Change /etc/fstab if you want to automatically mount the raid device.Mount /dev/disk/by-id/md-name-centos-62-1.localdomain:data /data Mkfs.ext4 /dev/disk/by-id/md-name-centos-62-1.localdomain:data Create new file system on the new raid device.

Mdadm -create /dev/md0 -level raid10 -name data -raid-disks 4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1

Create new raid 10 using the partitions we created.

Continue creating partitions by repeating the above procedure on all the other disks that will participate in the raid.

Last cylinder, +cylinders or +size (1-1044, default 1044):įd Changed system type of partition 1 to fd (Linux raid autodetect)Ĭalling ioctl() to re-read partition table.

First we will create linux raid partitions on our disksġ -> enter First cylinder (1-1044, default 1):.

Raid 10 have a great fault tolerance because of its mirror pairs and very good performance because of the stripe technology. Raid 10 is stripe of mirrored disks, it uses even number of disks (4 and above) create mirror sets using disk pairs and then combine them all together using a stripe.

#Linux softraid setup which drives are mirrors how to#

In this post I will show how to create a raid 10 array using 4 disks. With mdadm you can build software raid from different level on your linux server. Mdadm is a linux software raid implementation. Hardware: Virtual Machine (VirtualBox 4.1.22) Introduction