I have 4x2TB Raid Z, I tried to upgrade to 4x3TB Raid Z during holiday. What I planed to do was as following.
1. Select one current 2TB drive offline. shut off, replace this drive with a new 3TB
2. "Replace" it on Freenas, after 8 hrs rebuild, it's 3x2tb + 1x3tb Raid Z Array, with same total space about 6TB.
3. Repeat 1-2, until replaced all other 3 2tb drives to 3tb, then total would be about 9TB.
Actually I did same thing before when I upgraded 4x1TB to 4x2TB
Now nightmare happened.
I succefully replaced the 1st 2TB drive with a 3TB drive.
Then I was replacing 2nd 2TB, during the resilvering, the 1st 3TB drive which I had replaced was dead!
So I lost all data. On my hand I still had 4 original 2TB disks. During the whole resilvering process, I didn't write or change any files.
I'm wondering that if I could put original 4 2TB disks back to rebuild the array.
Thanks
1. Select one current 2TB drive offline. shut off, replace this drive with a new 3TB
2. "Replace" it on Freenas, after 8 hrs rebuild, it's 3x2tb + 1x3tb Raid Z Array, with same total space about 6TB.
3. Repeat 1-2, until replaced all other 3 2tb drives to 3tb, then total would be about 9TB.
Actually I did same thing before when I upgraded 4x1TB to 4x2TB
Now nightmare happened.
I succefully replaced the 1st 2TB drive with a 3TB drive.
Then I was replacing 2nd 2TB, during the resilvering, the 1st 3TB drive which I had replaced was dead!
So I lost all data. On my hand I still had 4 original 2TB disks. During the whole resilvering process, I didn't write or change any files.
I'm wondering that if I could put original 4 2TB disks back to rebuild the array.
Thanks