Quick Linux example on checking your current RAID configuration in the terminal.
Check kernel 'md' state
cat /proc/mdstat
Example:
This is a typical Dev Box RAID configuration with OS on RAID1, and data on RAID 5
Personalities : [raid1] [raid6] [raid5] [raid4]
md1 : active raid1 sdb2[1] sda2[0]
136448 blocks [2/2] [UU]
md2 : active raid1 sdb3[1] sda3[0]
129596288 blocks [2/2] [UU]
md3 : active raid5 sdl1[9] sdk1[8] sdj1[7] sdi1[6] sdh1[5] sdg1[4] sdf1[3] sde1[2] sdd1[1] sdc1[0]
1318680576 blocks level 5, 1024k chunk, algorithm 2 [10/10] [UUUUUUUUUU]
md0 : active raid1 sdb1[1] sda1[0]
16787776 blocks [2/2] [UU]
unused devices: <none> |
|---|
Brief line-by-line explanation
Personalities : [raid1] [raid6] [raid5] [raid4]
md1 : active raid1 sdb2[1] sda2[0]
136448 blocks [2/2] [UU] |
|---|
Shows types of RAID supported by your kernelPersonalities : [raid1] [raid6] [raid5] [raid4] |
|---|
md1 = name of RAID arraymd1 : active raid1 sdb2[1] sda2[0] active = RAID is active raid1 = type of RAID sdb2 and sda2 = devices associated with this RAID array [1] and [0] = RAID role numbers within that array, for each device |
136448 blocks [2/2] [UU] Information about fixed size and layout |
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