Checklist 1: Actions for load-source disk unit failure

This checklist shows the sequence of steps you should use to recover after a load-source disk unit failure when no data has been lost.

This checklist should be used for the following problem situation:

Failed unit:: Load source unit
Data loss:: None
User ASP configured:: N/A

Before you begin your recovery, make a copy of this checklist. Fill in the appropriate areas as you and the service representative perform the recovery steps. This checklist provides an important record of your recovery actions. It can help you to diagnose any problems that occur after the recovery. It might also be useful in evaluating your backup strategy.

Most steps in the checklist include references to other topics in this document. Refer to these tasks if you need more information about how to perform a particular step. You might not need to perform some steps, such as restoring changed objects, if they do not apply in your situation.

Note: When your load source unit is failed and you are recovering from distribution media with Operations Console (LAN) configured, you might be required to use another console type for your recovery.

Table 1. Recovery checklist for disk failure–Checklist 1
Task	What to do	Where to read more about it
Actions to be performed by the service representative
___ Task 1	Save the disk unit data.
___ Task 2	Attach the new disk unit.
___ Task 3	Install the Licensed Internal Code using option 4 (Install Licensed Internal Code and Restore Disk Unit Data).	Preparing for loading the Licensed Internal Code and Loading the Licensed Internal Code.
___ Task 4	Restore the disk unit data.
Actions to be performed by the user
___ Task 5	You must perform an initial program load (IPL) at this time. Follow the procedure for starting the system after it ends abnormally.	Starting the system after it ends abnormally, task 1 through task 4.