Need Help With a Western Digital Caviar Green WD20EARS

[poofyhairguy]

Ok, I messed up bad and I need some Unraid Guru help.

 

I got one of the new Western Digital Caviar Green WD20EARS drives yesterday and last night I added it to my Unraid box. The problem is that I forgot to jumper pins 7 and 8. It was cleared and formatted last night, but no data has been put on it.

 

Today I stopped my array, de-assigned the drive and turned off the system. Then I added the jumper on pins 7 and 8 on the drive. Then I restarted the system, stopped the array, and then reassigned the drive.

 

Now Unraid wants me to do a Data-Rebuild, but from my understanding the drive needs to be reformatted to get it to work.

 

What do I do?

 

(And before someone asks I know the forums have advice on this, but in my searching I have not found anyone that screwed up as much as I have).

[jazzysmooth]

Assuming everything was in good shape prior to adding the drive initially, and that you haven't written any new data to the array since then, I would run the preclear_disk.sh script on it while its removed from the array (this will reformat it correctly - if you used it previously, you can add the -n parameter to skip the pre and post sector reads).  Then once that completes, re-add it to the array and let it rebuild.

 

Another option would be to do what I did when I did the same thing with 2 drives - remove it from the array, run initconfig from the console to rebuild parity based on the new config, rerun preclear script and then re-add it to the array once it completes.

 

The first option keeps your parity intact the entire time at the cost of formatting the new drive twice, the 2nd option only formats it once, but your parity drive will be rebuild, potentially putting you at risk should a drive fail.

[poofyhairguy]

Thank you very much. I will just use the preclear script as you stated as I am comfortable with it.