Dedicated Service Tools (DST)

Dedicated service tools (DST) is used to work with Licensed Internal Code (LIC), disk units, configuration and resources, verify devices and communications, and display logs on the system.

DST operates in stand-alone, limited, and full paging environments. The DST tools and functions vary depending on the paging environment and the release level of the operating system. For more information, see System paging environments.

System Service Tools (SST) provides a way to access a subset of the service tools that DST offers without requiring access to DST. SST is available when i5/OS® is operational, and can be accessed using the STRSST CL command.

Dedicated Service Tools requirements

Note: It is a requirement to change the password the first time anyone signs on to DST or SST. The authorized service provider must provide the new (changed) password to the customer or have the customer change the password.

To use DST, you must have the following items:

The disk that contains the Licensed Internal Code (the load-source disk).
Note: When you perform an alternate initial program load (IPL) to DST, you do not need the load-source disk.
An operational workstation on bus 1 as either a primary console or an operations console.
One workstation for each system partition.
A valid service tools user ID and password to sign on to DST. IBM® supplies service tools user IDs that have different levels of privileges. For more information, see Work with service tools user IDs.

To make a printout, attach the printer to the workstation I/O processor or storage media unit that is performing the service function. The printer that is used with DST for service tool output must be an SCS-type data stream printer.