I've got... err *had*... an 8x8TB array running under unRAID 6.6.6 (7 data + 1 Parity).

I accidentally did a stupid thing and believe that I have fried all 8 PCBs on the HDDs.

There are services that will transfer your PCB BIOS and firmware onto compatible "donor" PCBs, then ship the replacement back to you and theoretically get your device back up and running (assuming ONLY PCB/Electrical related issues).

 

MY QUESTION: What specifically does unRAID use to identify disks when re-assembling an array? Before I attempt this PCB swap... i'd like to confirm with the company that this information will still be present/transferred/viable as part of their process.

Thanks!

Let me guess. Incompatible modular power supply cable. I don't know why somebody doesn't pass a law against that.

 

Unraid identifies the assigned disks by their serial number. But having the wrong serial numbers is not that different from not knowing what serial numbers were assigned where. This often happens when someone doesn't have a backup of their flash drive.

 

As long as you don't assign a data disk to the parity slot you can start an array from scratch with the data intact. So just don't assign a parity disk until you have a chance to see which disks have data.

On 1/25/2019 at 4:26 PM, trurl said:

Let me guess. Incompatible modular power supply cable. I don't know why somebody doesn't pass a law against that.

 

Unraid identifies the assigned disks by their serial number. But having the wrong serial numbers is not that different from not knowing what serial numbers were assigned where. This often happens when someone doesn't have a backup of their flash drive.

 

As long as you don't assign a data disk to the parity slot you can start an array from scratch with the data intact. So just don't assign a parity disk until you have a chance to see which disks have data.

You got it! A Corsair PSU SATA cable on an EVGA PSU.

Thanks for the tip that serial numbers shouldn't matter as long as I don't "misplace" the parity drive into the array. I've got a screenshots of my original config so I think I should be able to get an array up and verified before adding my parity drive (assuming the PCB swap works).

Thanks for the info!