I have a LSI 9260-8i HBA controller with a 3 drive RAID 6 configuration. I'd like to add a 4th drive to it. I've read the docs but am not sure how the controller behaves exactly. Does it bring in the new drive in the background while the array is in use, or do you have to wait until the process is complete through the card's BIOS UI? That could take a while with 3-4TB of data on the current set.