[SOLVED] Replace Empty Data Drive With New Larger Drive

Background: My media unRAID has 26 spinning disks and 2 SSDs in it, all driven by an LSI 9217-8i (SAS2308). One miniSAS port is feeding a 24 port Supermicro backplane and the other a 12 port Supermicro backplane (both in my Supermicro CSE-847 enclosure). I have 2 x 16TB for dual parity, 2 x 16TB and 22 x 10TB for the data array, 1 x 2TB SSD for cache, 1 x 1TB SSD for some VMs and Docker containers. The 4 x 16TB drives were implemented just over a month ago using a new co

Thanks... diagnostics attached. It's been running the rebuild of the empty drive for almost 2 days already and showing about 4 days left. I probably should have attempted this sooner as the initial parity sync with the new 16TB drives also took almost 6 days total. And the same for the 1st of these 2 new 16TB drives - about 6 days. Note that I have occasionally paused the parity sync/rebuild when I needed a little more write performance for new data being added to the server. I know that increas