Moving from 2 Disk Mirror to 3 Disk Z1

[ManuLeaN]

Hi, i have the following scenario.

When I started with my NAS i only had one 4 TB drive that I used as Storage and later added anoter 4 TB Drive (clicked on expand pool) and as I expected the VDEV now is a mirror.

Im pretty sure that when I add a thrid drive that it will just be a three drive mirror.

Is there any way that without outright buying some storage elswhere, moving all the Data, and rebuilding the entire VDEV I can (even if risky) somehow add a third disk and get a Z1?

 

[Alecmascot]

Is there any way that without outright buying some storage elswhere, moving all the Data, and rebuilding the entire VDEV I can (even if risky) somehow add a third disk and get a Z1?

No

 

[chuck32]

Is there any way that without outright buying some storage elswhere, moving all the Data, and rebuilding the entire VDEV I can (even if risky) somehow add a third disk and get a Z1?

I strongly discourage going that route, however for the sake of completeness I'll leave the link here:

Creating a degraded pool

WARNING: HERE BE DRAGONS. IF YOU DON'T KNOW EXACTLY WHAT YOU'RE DOING, DO NOT FOLLOW THESE INSTRUCTIONS. IN FACT, IF YOU NEED THESE INSTRUCTIONS, YOU PROBABLY SHOULDN'T FOLLOW THEM. There are a few cases where it may make sense to create a...

www.truenas.com

Please invest in more storage (or temporarily use a cloud service) and do it properly. In general it would be good to have a backup.

 

[ChrisRJ]

Is there any way that without outright buying some storage elswhere, moving all the Data, and rebuilding the entire VDEV I can (even if risky) somehow add a third disk and get a Z1?

For me this falls into the category of "if you have to ask you REALLY shouldn't do it".

 

[Arwen]

For me this falls into the category of "if you have to ask you REALLY shouldn't do it".

I second this comment.

Basically we are not trying to stop you from doing it. However, we won't be responsible for any lost data. Nor to help "fix" the any problems after. In essence, we are conservative in how we treat our data.