Expanding Storage

[saevox]

Expanding from 3x3 tb, and adding another 3tb hdd to my freenas. Read the guide and just want to make sure that the warning I get about data will be lost only applies to the new drives, not the existing data. Just makes me nervous.

 

[snaptec]

Did you expand the pool with a single drive?
That is bad.
Now you have 3x3tb in z1 striped with a single drive.
When the single drive fails all data is lost.
You cannot detach it!
Save your data, destroy the pool and make a new one.
Z1 is also not recommended.
Make a new one with striped mirrors or raidz2.


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[saevox]

Did you expand the pool with a single drive?
That is bad.
Now you have 3x3tb in z1 striped with a single drive.
When the single drive fails all data is lost.
You cannot detach it!
Save your data, destroy the pool and make a new one.
Z1 is also not recommended.
Make a new one with striped mirrors or raidz2.


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No, I have not done anything yet, the existing 3x3tb is there, I have 3 more 3tb disk to expand with. I think that will make me raid 50? Asking before I act, I installed the disk and went through the storage tab ti add them, and saw the data will be lost warning....and hesitated. Like I said I did read the manual and so adding another 3x3tb as recomended.

 

[cobrakiller58]

I personally would get 3 more 3TB drives and build a 6 drive raidZ2, adding another 3 drive raidZ1 is acceptable if you cannot backup that data anywhere. You should however have it backed up somewhere else no matter what....

 

[snaptec]

Ah okay.
With that constellation I would backup the existing data. Destroy the pool and make a new one with 6x 3TB in raidz2.
To vdevs with raidz1 and 3TB is really not recommended.
The chance that during a resolver another drive fails is very high.
With the new build you get the same amount of space as with 2x 3xraidz1. Just less iops( the same amount as know with one vdev)


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