Unable to add disk to array

The error "tm_install::process::Process_array_member_add --sdb ownership is none" suggests that there may be a configuration or ownership issue with the replacement disk on your F5 7000S running OS version 11.4.1. Since the replacement disk is of a bigger capacity, it's possible that the RAID configuration is not recognizing the new disk properly. Consider updating the F5 OS to the latest available version, as newer versions may have addressed compatibility issues with different disk sizes.