After copying all of my data from my unassigned drives to my array, is it recommend to somehow verify all the data has copied correctly before I format the unassigned drives to add to the array? And is there an easy way to achieve this?

 

Thanks

You can only verify the data if you have checksums, but assuming the hardware is reliable, it should be good, any read errors it would abort, of course if you have bad RAM or other issue, it could still some corruptions.

Thanks for your reply. As far as I know all hardware is fine and data has copied across without interruption or errors so I'll assume all is good.

 

I've actually taken a step backwards because I loaded the drive with data before I had tested it, so I've now installed the preclear plugin and am running that on the parity and data drives (each 16TB). I figure it's worth doing at least one pass on each for a bit of peace of mind, especially because both drives are re-certified drives (they were about 60% of the price of new so decided it was worth a shot) and both came in sealed anti-static bags. Both have passed short SMART test and show 0 power on hours.

 

Once the preclear has completed, is there any point in running a long SMART test on each as well?

 

Cheers

I think one or the other is enough.