Need to increase storage

dbotsios

Cadet
Joined
Dec 13, 2021
Messages
2
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
 

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Arwen

MVP
Joined
May 17, 2014
Messages
3,611
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

Contributor
Joined
Jan 27, 2022
Messages
183
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.
 
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