Changing the 3995 library connectivity

The 3995 LIBRARY ALTER panels also allow the storage administrator to alter the library system connectivity, online or offline status, or both. This allows the library to be connected to a different system (different from the currently logged on system or different from the system on which the library was originally defined).

This change in system connectivity for the library allows customers to test OAM software and 3995 hardware on a test system without interrupting the production system; however, once a 3995 library is connected to a test system, it is not available to the production system until it is reconnected and the SCDS is reactivated. If the system connectivity of a 3995 optical library is changed, all the storage groups associated with that library must also have their system enablement status changed so they are enabled to the same system as the library. The test system then can use the same SMS configuration as the production system.

Note: DB2 databases belonging to OAM must be defined to the DB2 subsystem on the test system, because these databases cannot be shared between systems, and the OAM configuration database used on the test system must be a copy of the one used on the production system.

To change the library’s system connectivity and online status, assume a scenario where systems PRODSYS1-3 are part of an OAMplex on a production sysplex. Also assume that systems TESTSYS5-8 are being used as test systems and are not part of a separate test OAMplex on the same sysplex or a different sysplex.

Changing connectivity is done by changing the INITIAL ONLINE STATUS for system name PRODSYS1 to blank and the INITIAL ONLINE STATUS for system name TESTSYS5 to YES (see Figure 2). LIBRARY1 is now online and connected to the TESTSYS5 system and can be used for testing. LIBRARY1 is now offline and not connected to any of the production systems (PRODSYS1-3) and is connected but offline to all the other test systems (TESTSYS6-8).

Changing the INITIAL ONLINE STATUS of a 3995 optical library dataserver controlling library model also updates the library definition in the specified SCDS to indicate the library is connected to the new system. This also changes the system connectivity for any optical library expansion unit connected to these controlling libraries. In addition, all of the optical drive definitions in the specified SCDS for all the optical disk drives associated with this library are updated to indicate the optical drives are connected to the new system.

Note: Changing the system connectivity of an optical library does not automatically change the system enablement status for the storage groups associated with that library. Therefore, the storage group definitions might need to be updated to provide the correct storage group enablement status. This allows the system connectivity of the optical library’s associated storage groups’ also to be changed from the OAMplex systems to the test system.

Attention: To reconnect the library to the original system (PRODSYS1), simply change the INITIAL ONLINE STATUS for system name PRODSYS1 back to Y (YES) and the system name TESTSYS1 back to N (NO) or BLANK. Also change the system enablement status of the storage groups which were changed from TESTSYS1 to PRODSYS1.

Indicate the library (LIBRARY1) for which the system connectivity and initial online status will change on the 3995 LIBRARY ALTER (Page 1 of 2) panel (Figure 1).

Figure 1. 3995 Library Alter Panel (Page 1 of 2)

   Panel  Utilities  Scroll  Help
 ------------------------------------------------------------------------------
                              3995 LIBRARY ALTER                Page 1 of 2
 Command ===>_

 SCDS Name  . :SCDS.PRIMARY
 Library Name :LIBRARY1
 Library Type :REAL

 To ALTER Library, Specify:
   Description ==>
               ==>

   Model Number . . . . .  133
   Base Device Number  . . 0940     (Valid base device number)
   Controlling Library . .          (Library Name)        (if expansion unit)
   Default Media Type  . . 3995
   Default Pseudo Library.          (Pseudo Library name)

 Use ENTER to Perform Verification; Use DOWN Command to View next Panel;
 Use HELP Command for Help; Use END Command to Save and Exit; CANCEL to Exit.

The 3995 LIBRARY ALTER (Page 2 of 2) panel (Figure 2) is displayed next. This panel is used to indicate the initial online status and system connectivity of the library to various systems in the installation.

Figure 2. 3995 Library Alter Panel (Page 2 of 2)

   Panel  Utilities  Scroll  Help
 ------------------------------------------------------------------------------
                              3995 LIBRARY ALTER                Page 2 of 2
 Command ===>_

 SCDS Name  . :SCDS.PRIMARY
 Library Name :LIBRARY1
 Library Type :REAL

   Initial Online Status (Yes, No, or Blank):
     PRODSYS1  ===>     PRODSYS2  ===>     PRODSYS3  ===>     PRODSYS4  ===>
     TESTSYS5  ===> YES TESTSYS6  ===> NO  TESTSYS7  ===> NO  TESTSYS8  ===> NO
               ===>               ===>               ===>               ===>
               ===>               ===>               ===>               ===>
               ===>               ===>               ===>               ===>
               ===>               ===>               ===>               ===>
               ===>               ===>               ===>               ===>
               ===>               ===>               ===>               ===>


 Use ENTER to Perform Verification; Use UP Command to View previous Panel;
 Use HELP Command for Help; Use END Command to Save and Exit; CANCEL to Exit.