The list all subcommand indicates that a disk is part of more than one RAID volume. A row is added for each disk/raid combination under the DISKS In Use list.
The Size column shows the size of the subdisk used to create the RAID volume.
The following is an example of the Disks In Use output:
DISKS In Use ============ ID Chassis Slot RAID ID Status Type Media Spare Size (GiB) --------------------------------------------------------------------------------- c0d0 0 17 c0r0 OK sas HDD - 50 c0d0 0 17 c0r1 OK sas HDD - 100 c0d0 0 17 c0r2 OK sas HDD - 200 c0d2 0 18 c0r0 OK sas HDD - 50 c0d2 0 18 c0r1 OK sas HDD - 100 c0d2 0 18 c0r2 OK sas HDD - 200