Raid vs jbod vs spanning

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX Series
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Hello all and merry christmas

Could you please explain the difference between spanning, raid 0 and jbod. i have a EX 2100 with 2 4tb disks in raid 1 but i need the space so i am thinking of changing that. I am aware that this will erase the data which is acceptable. However i do not quite understand the difference of the three other modes
Thank you

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@MARIOLASA

In your situation, all three modes will give you 8 TB of usable space.

RAID 0 is basically striping, so alternating blocks are written to different disks. So block 1 is written to disk 1, block 2 to disk 2, block 3 to disk 1, etc.

Spanning will fill one disk completely and then move onto the second disk.

JBOD is used when the disks are of different sizes, so you could have a 2TB disk and a 3 TB disk and set them up as a 5TB JBOD. I believe the data is written to these similar to spanning, but never used this mode before.

If I had to pick, I would select RAID 0, so the disk wear is even.

Hope this helps.

JediNite

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Many thanks!

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