Since PSSP 2.2, commands that operate on multiple nodes (such as createvsd, createhsd) and the IBM Virtual Shared Disk Perspective graphical user interface have been introduced to improve the usability of the shared disk management components. However, you might still have scripts that use single-node commands, such as defvsd and defhsd. This appendix contains the earlier version of the information on defining and managing shared disks one node at a time.