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I have one zpool on a 22TB disk. I don't need redundancy, so I am not considering raidz etc. But I do need to expand capacity of my pools. If I can figure out a way to add 3 more HDDs to my main pool to have its capacity at 88 TB, how do I take a backup of these 88TBs?
Assume I have 4x 22TB backup HDDs. Is there any way I can connect them one by one as an external device and take incremental backup? If that is dumb, what is the alternative? I guess snapshots are the answer somehow but I am not sure how to use them unless I setup another machine just for backups.
TIA.
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