Need to increase storage

[dbotsios]

Hi,
I'm running a Truenas configuration with 2x 1TB HDDs mirrored.
Now I need to increase my storage size and for this reason I purchased another HDD of 2TB.

I don't understand what do I have to do to increase my storage.
Can I keep the current Mirrored configuration and add the new 2TB HDD as a separate drive?
Or can I use the 2x 1TB HDDs mirrored with the 2TB HDD?

Thank you

 

[Arwen]

Neither. ZFS is not that flexible.

You either replace both 1TB with larger disks. Or add in another pair of disks. Well, you could backup everything and make the 3 disks into a RAID-Z1.

ZFS was not designed for every configuration of disks. So somethings like what you want are not possible.

 

[somethingweird]

Can I keep the current Mirrored configuration and add the new 2TB HDD as a separate drive?
Or can I use the 2x 1TB HDDs mirrored with the 2TB HDD?

Yes, it possible - but it something that you don't want if your 2TB HDD fails without redundancy.

1. Mirrored configuration and add the new 2TB HDD as a separate pool - If 2TB harddive fails, no redundancy for recovery, but mirror still works
2. 2x 1TB HDDs mirrored with the 2TB HDD into single pool - if 2TB harddrive fails, entire pool fails no recovery.

You need at least another 2TB HDD if you want proper setup.