1)On the Start Service Tools (STRSST) Sign On panel, type your service tools user ID and password.
2) On the System Service Tools (SST) panel, type 1 to select Start a service tool.
3)On the Start a Service Tool panel, type 7 to select Hardware service manager.
4) On the Hardware Service Manager panel, type 1 to select Packaging hardware resources (systems, frames, cards,...).
5)On the Packaging Hardware Resources panel, type 9 to select the System Expansion unit.
6)On the Packaging Hardware Resources panel, type 8 to select Storage IOA.
7) On the Logical Resources Associated with a Packaging Resource panel, type 5 to select Storage IOA.