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How do snapshots in ZFS Array work?

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Hello! I was reading this zfs-guide blog post, and it mentions this:

Quote

Hybrid Approach

ZFS-formatted disks within the Unraid array
 

Pros:
 

This strategy combines Unraid's array flexibility, allowing for easy capacity expansion, and ZFS's advanced features, such as data compression and snapshots.

 

I am specifically interested in how the snapshots work. Are the snapshots done at the share level? Or are they done at the disk level, since from what I understand, these are single disk pools?

 

For example, I convert my current array from xfs to zfs, and now I have 3 shares that span 9 disks. Can I do a snapshot on share1 where I can later roll back that snapshot, or browse it to locate a file I need?

 

I wanted to take advantage of the snapshot capability, but if I have to look through each disk's snapshots to find what I need I'm not sure I want to make that change.

 

Thanks!

 

 

Solved by JorgeB

  • Community Expert
  • Solution

Snapshots are by share and disk, meaning, if you have a share that spans for example three array disks, you would need to take three individual snapshots.

  • Author

Thank you!

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