Trying to Add Drives to a Pool Without Data Loss

[bobawb]

Sorry if i'm naive in asking this, i'm very new to FreeNAS.
My current setup is a single 3tb drive, with data on it.
I have two other blank 3tb drives that I want to add to the pool, and switch the pool to Raid 1. Would this be possible?

 

[garm]

Short answer is No, long answer is that it can be hacked. Search for building a degraded pool.

But seriously don’t do that. Find a way to backup the data and rebuild the pool. It’s way safer

 

[anmnz]

I have two other blank 3tb drives that I want to add to the pool, and switch the pool to Raid 1.

What pool configuration are you trying to end up with exactly?

"RAID-1" means mirroring. Are you trying to end up with your three drives in a triple mirror?

You can safely "attach" new drives to your existing drive to create a mirror if that is what you are aiming to do.

 

[bobawb]

What pool configuration are you trying to end up with exactly?

"RAID-1" means mirroring. Are you trying to end up with your three drives in a triple mirror?

I didn't understand, I believe what I am actually looking for is raid 5, where I can lose 1 of the 3 drives.