Hello,

I have a 24 drive array with 2x 10TB  parity disks. Total size of array is 188TB with 132TB used. 

I have 2 disks with bad sectors,

1 is a 6tb and the other is a 10TB drive.

 

Since my array is very large and it takes a long time to do a parity check.

Is it better that i copy off the data from each bad disk replace the disk and copy the data back on or should i let Unraid do a rebuild?

I want to minimize the downtime for my array as its used for nightly backups. 

 

 

 

11 minutes ago, swamiforlife said:

replace the disk

If you're going to replace the disks anyway it will always need a rebuild or a parity sync, plus the time to copy the data, so can't see the point, you can continue using the array during the rebuild, though performance might be a little degraded.

Thanks