Chapter 8



1.  Starting and Stopping the AS/400



2.  What an IPL Does 

	IPL does: 

		*Starts the operating system.

 		*Resets disk storage. This results in increasing available disk storage.

 		*Recognizes new licensed-program products.

 		*Optionally applies delayed Program Temporary Fixes (PTFs).

 		*Recognizes some changes in system values.

 		*Unused addresses are returned to the system. 



3.  When to IPL

	*Regularly scheduled - at least monthly.

	*After a power failure or any abnormal end. 

	*After installed delayed PTFs.

	*After installing a new licensed program product (LPP).

	*A problem with system-- support's direction. 

	*Your addresses used reaches 90 percent. 

	*Your system auxiliary storage reaches 95 percent.  



4.  System Status  

	SEE TABLE()



5.  Cleaning DASD – Lower Usage 

	*Check system libraries (start with Q) for user libraries or files. 



6.    *Unnecessary user libraries/files - Examples: 

		-Obsolete libraries used for vendor demos, training, or testing.

		-Programmers' personal libraries.

		-Various system logs.

		-Large audit files. 

	*Minimum of two Auxiliary Storage Pools (ASPs) (ASP 1 and ASP 2). 

 		-ASP 1 only system objects. 



7.  Control Panel Common Components

	*An LCD display information & used to

		-View statuses of the system. 

		-Assist in problem analysis. 

		-Make IPL function/mode selections. 

		-Display stages of an IPL. 

	*A slot for a physical key or key stick.

	*Selection dial or buttons. 

	*Power on/off button (RARELY used). 



8.  More Information

  http://publib.boulder.ibm.com/pubs/html/as400/online/v4r4eng.htm 



9.  Control Panel – 9402/9404  

	SEE TABLE()



10.  Control Panel – 9404/9406

	SEE TABLE()



11.  Control Panel Areas

	A - Power On Light

	B – Power pushbutton

	C – Processor Activity or Processor Active Light

	D – System Attention Light

	E – Function/Data display

	F – Increment/decrement

	G – Enter Push button

	H – Mode:

	   	Manual

		Normal

		Auto

		Secure

	*Electronic Keystick



12.  Mode Positions (H)

	*Normal: For day-to-day operations.

	*Manual: Allows manual IPLs.

	*Auto: Allows automation operation except:

		-Starting with an manual IPL.

		-Stop system with Power pushbutton.

		-Select different IPL type with    buttons.

	*Secure: Locks the control panel.



13.  IPL Types

	*Normal IPL

		-Automatic

		-Unattended IPL

	*Manual IPL

		-Manual

		-Attended IPL

	*Remember:

		-Manual = Attended

		-Normal = Unattended



14.  IPL Storage Areas

	A = permanent

	B = temporary



15.  Storage Areas

	SEE TABLE()



16.  Stopping the AS/400

	*Power Failure.

	*Unplugging the machine.

	*Pressing the Power switch on the control panel.

	*Using the Power Down System (PWRDWNSYS) command.

	 PWRDWNSYS Command

17.  End Subsystem Command

	SEE TABLE()



18.  SEE TABLE()



19.  Starting the AS/400

	*Starting after a power down

		-System value QIPLTYPE = '0' allows unattended IPL.

		-If down due to a power failure, QPWRRSTIPL = '1'. 

		-The mode switch set to NORMAL. 



20.  Automatic IPL on Active AS/400

	*Mode switch is set to NORMAL.

	*System value QIPLTYPE = '0'. 

	*Security Office [SECOFR] or Security Administrator [SECADM] authority in user profile. 



21.  	*End all jobs, in all subsystems except QSYS. 

	*End all subsystems except QSYS. 

	*Enter command & press Enter: 

	 PWRDWNSYS OPTION(*IMMED)+ RESTART(*YES  *IPLA) 



22.  Restart Type

	-*SYS

		-Attached hardware devices that can be restarted if pending PTF that requires it. 

	-*FULL

		-All restart able hardware devices are restarted. 

	-*IPLA - The restart type (*SYS or *FULL) 

		-IPL Attributes table stored in AS/400. 

		-Can change many IPL options without a manual IPL. 

		-Change IPL Attributes CHGIPLA. 



23.  Change IPL Attributes

	SEE TABLE()



24.  Manual IPL Screen

	SEE TABLE()



25.  IPL Options

	SEE TABLE()

	

26.  Major System Options

	SEE TABLE()



27.  Define/change System IPL

	SEE TABLE()



28.  Power On/Off 

	SEE TABLE()



29.  IPL System Values

	SEE TABLE()



30.  IPL System Values – Continued

	SEE TABLE()



31.  IPL System Values - Continued

	SEE TABLE()