This section contains commands that are used to create, modify, and delete ranks and to display rank information.
The chrank command assigns an unassigned rank to an extent pool or removes an assigned rank from a extent pool. This command can also be used to change an assigned rank to an unassigned rank.
The lsrank command generates a report that displays a list of defined ranks in a storage unit and the status information for each rank in the list.
The mkrank command creates one fixed block or count key data (CKD) rank from one array.
The rmrank command deletes the specified ranks from a storage unit.
The showrank command generates two types of reports. One report displays the detailed properties of a specified rank. The other report displays the performance metrics of a specified rank.