Expand existing RAID1 zpool into RAID10 zpool

Question

I'd like to expand/convert my existing RAID1 (2x 3TB mirror) zpool to RAID10 zpool by adding 2 more 3TB HDDs without losing (or moving) data stored on my existing pool.

The final result will look like 2x3TB (existing mirror) + 2x3TB (new mirror) combined into RAID0 zpool

Is it possible?

score 3 · Accepted Answer · answered May 04 '20 at 20:03

3

Yes, it's possible. The incantation you are looking for is:

zpool add poolname mirror newdisk1 newdisk2

answered May 04 '20 at 20:03

Gordan Bobić

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Expand existing RAID1 zpool into RAID10 zpool

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