Defining the control unit characteristics

On the Primary Task Selection panel, select Define, modify, or view configuration data and on the resulting panel the object Control units. HCD displays the Control Unit List showing all control units currently defined in the IODF.

Figure 1. Control Unit List

  Goto  Filter  Backup  Query  Help
------------------------------------------------------------------------------
                              Control Unit List                 Row 145 of 339
Command ===> _______________________________________________ Scroll ===> CSR

Select one or more control units, then press Enter.  To add, use F11.

                           ---#---
/ CU   Type +        CUADD CSS MC  Serial-# + Description
_ 5E00 2105          6     5       28641      SUBCSE - S/N 28641
_ 5F00 2105          7     5       28641      SUBCSE - S/N 28641
_ 6000 2107          0     5       54321      SUBSQ02 - S/N 54321
_ 6100 2107          1     5       54321      SUBSQ02 - S/N 54321
_ 6200 2107          2     5       54321      SUBSQ02 - S/N 54321
_ 6300 2107          3     5       54321      SUBSQ02 - S/N 54321
_ 6400 2107          4     5       54321      SUBSQ02 - S/N 54321
_ 6500 2107          5     5       54321      SUBSQ02 - S/N 54321
 F1=Help      F2=Split     F3=Exit      F4=Prompt    F5=Reset     F7=Backward
 F8=Forward   F9=Swap     F10=Actions  F11=Add      F12=Cancel   F13=Instruct
F22=Command

Column CUADD shows the CUADD value defined for the control unit, where available. If the CUADD is inconsistently set for the control unit among processors, an * is displayed.

Column #CSS shows the number of channel subsystems to which a control unit is connected. This column contains a value only if a connection exists.

Column #MC shows the greater of the number of managed channel paths defined for the connected processors or the number of managed channel paths defined for the selected processor when coming down from the processor. This column contains a value only if managed channel paths are defined for the control unit.

Note: The CF control units generated when connecting CF channel paths are listed but are disabled for any action. It is not possible to add a new such control unit via this dialog.

Use F11=Add to define a new control unit. The preceding data-entry fields are shown, with sample data:

Figure 2. Add Control Unit

                        Add Control Unit 
                                                                      
                                                                      
 Specify or revise the following values.                              
                                                                      
 Control unit number  . . . . 00D1  +                                 
 Control unit type  . . . . . 3990-3_______  +                        
                                                                      
 Serial number  . . . . . . . __________                              
 Description  . . . . . . . . DASD control unit_______________        
                                                                      
 Connected to switches  . . . __  __  __  __  __  __  __  __  +       
 Ports  . . . . . . . . . . . __  __  __  __  __  __  __  __  +       
                                                                      
 If connected to a switch:                                            
                                                                      
 Define more than eight ports . . 2   1.  Yes                         
                                      2.  No                          
                                                                      
 Propose CHPID/link addresses and                                     
 unit addresses . . . . . . . . . 2   1.  Yes                         
                                      2.  No