2011 IBM Corporation IBM Systems HCD and HCM Development IBM Deutschland Research & Development GmbH Contact: I/O configuration management with HCM - Creating and connecting I/O subsystems - - an HCM hands-on tutorial - IBM Systems and Technology Group, IBM Bblingen IBM Systems 22/17/2016 HCM and I/O Configuration Management Trademarks The following are trademarks of the IBM Corporation in the United States or other countries or both: IBM IBM (logo) z/OS See also urlfor a list of trademarks.http://www.ibm.com/legal/copytrade.shtml IBM Systems and Technology Group, IBM Bblingen IBM Systems 32/17/2016 HCM and I/O Configuration Management Contents: This tutorial guides you through the following two steps Step 1: Create an I/O subsystem Step 2: Connect the new I/O subsystem to an existing processor with a working channel subsystem and of course, shows you how to perform all of the configuration work in a comfortable way using . HCM ! IBM Systems and Technology Group, IBM Bblingen IBM Systems 42/17/2016 HCM and I/O Configuration Management Let us propose a scenario: Define a DS8000 TotalStorage Disk Storage System Step 1: Create an I/O Subsystem Connect DS8000 I/O subsystem to an existing channel subsystem using HCM Step 2: Connect the I/O Subsystem Step 4 IODF Build Production IODF using HCM Step 3 IODF (not shown in this tutorial) Activate new IODF using HCD IBM Systems and Technology Group, IBM Bblingen IBM Systems 52/17/2016 HCM and I/O Configuration Management How to make the definition task easier? Use HCMs Create I/O Subsystem wizard to define the I/O subsystem Benefit Guided approach to create the whole subsystem Create multiple, similar control units with a few mouse clicks Create multiple, similar device ranges (strings) with a few mouse clicks Automatic assignment of physical connections / assignments where possible Using the wizard is much more reliable than the manual approach Using the wizard is much quicker than the manual approach Try this tutorial in HCD-connected mode ! Use HCMs Select Multiple Connection Targets dialog for physical connections Use HCMs Processor and CHPID Connections dialog for logical connections IBM Systems and Technology Group, IBM Bblingen IBM Systems 62/17/2016 HCM and I/O Configuration Management How to start: On our web page atwe provide a processor configurationwww.ibm.com/systems/z/os/zos/features/hcm/ with a complete channel subsystem in an exported IODF: iodf33.iosub.tutorial.work.expiodf Import this IODF into an HCM configuration: 1. Login File IODFs opens the IODFs diaolg where you press the Import button 2. In the Import IODF dialog specify Exported IODF file and the target IODF 3. In the IODFs dialog Load... the exported target IODF from step 2 into a configuration Here is the initial configuration diagram: IBM Systems and Technology Group, IBM Bblingen IBM Systems 72/17/2016 HCM and I/O Configuration Management Now proceed to Step 1: Create an I/O subsystem Step 2: Connect the new I/O subsystem to processors with defined channel subsystems IBM Systems and Technology Group, IBM Bblingen IBM Systems 82/17/2016 HCM and I/O Configuration Management How do we want to configure the DS8000 ? We want to configure the DS8000 to contain a range of 16 control units of type > starting control unit number 9000 with offset 80 -> SSID FF01 for control unit 9000 Control unitDevicesControl unitDevices 903F 3390B 9040 907F 3390A 941F 3390B 9420 947F 3390A 90BF 3390B 90C0 90FF 3390A 949F 3390B 94A0 94FF 3390A 913F 3390B 9140 917F 3390A 951F 3390B 9520 957F 3390A 91BF 3390B 91C0 91FF 3390A 959F 3390B 95A0 95FF 3390A 923F 3390B 9240 927F 3390A 961F 3390B 9620 967F 3390A 92BF 3390B 92C0 92FF 3390A 969F 3390B 96A0 96FF 3390A 933F 3390B 9340 937F 3390A 971F 3390B 9720 977F 3390A 93BF 3390B 93C0 93FF 3390A 979F 3390B 97A0 97FF 3390A Sums up to a total of 2048 devices distributed onto 16 control units IBM Systems and Technology Group, IBM Bblingen IBM Systems 92/17/2016 HCM and I/O Configuration Management And here is a preview of the result of Step 1: A new I/O Subsystem (partially zoomed in) yet unconnected. The next slides will show you how to define the I/O Subsystem with a few clicks. IBM Systems and Technology Group, IBM Bblingen IBM Systems 102/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Select: Create I/O Subsystem Invoke the Create I/O Subsystem wizard: IBM Systems and Technology Group, IBM Bblingen IBM Systems 112/17/2016 HCM and I/O Configuration Management Alternative 1: Select a model from a Physical Description File (PDF) for the new controller / subsystem. You can select from: IBM provided PDF files User defined PDF files Use a default label prefix or define your own label prefix: M9A2#3. Create a DS8000, Model xx: Step 1: Create an I/O Subsystem (As default,HCM would take the string 2107#nn, where nn is the count of 2107 controllers found in the in the configuration file) IBM Systems and Technology Group, IBM Bblingen IBM Systems 122/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Alternative 2: Select a model from an existing Controller in your configuration. In this case, the listbox offers all defined controllers. Select the controller you want to use as a model for your I/O subsystem. Define the starting CU number and starting device number. This tutorial demonstrates Alternative 1. So continue the wizard dialog as shown on the next slide. Create a DS8000, Model xx: IBM Systems and Technology Group, IBM Bblingen IBM Systems 132/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Add control units: The wizard now offers some default suggestions. On this dialog, you can: define a range of control units all with the same serial number, having a specified starting number for the lowest control unit ID. with a fixed offset between subsequent control unit IDs, Here you see the dialog with default values. Proceed to the next slide to see the input values for our scenario. IBM Systems and Technology Group, IBM Bblingen IBM Systems 142/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Specify: a serial number (25987) for all control units (CUs) you create a starting number (9000) which equals the ID of the first control unit you want to create, an offset between control unit IDs (0080) if you define a control unit range, a description, the number / range of this type of control units (16). Add control units: Press the Add>> button now to add the 16 control units to the controller (subsystem). IBM Systems and Technology Group, IBM Bblingen IBM Systems 152/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Control unit range has been defined (16 control units) Serial number, offset value, and description are still set The number of new control units has been reset to 1 The next control unit ID (new starting number 9800) is the highest last used control unit ID (9780) + Offset (0080) On the next slide, use the Update field to define an SSID for control unit Add control units: IBM Systems and Technology Group, IBM Bblingen IBM Systems 162/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Select control unit The Selected Control Unit field now shows control unit 9000 and the Update button is enabled. Enter SSID FF01 for documentation purposes. Press the Update button. Add control units : IBM Systems and Technology Group, IBM Bblingen IBM Systems 172/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Add control units : The updated control unit 9000 is shown in the list with the defined SSID FF01. Control unit definitions are finished now. Press the Next> button. IBM Systems and Technology Group, IBM Bblingen IBM Systems 182/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Now you can assign the new control units to segments of the controller: If you have multiple controller segments, HCM automatically assigns control units symmetrically to segments if the number of control units is an even multiple of the number of segments. Newer types of I/O subsystems have just one segment. All control units are assigned to this single segment automatically Press the Next> button. Connect control units to segments IBM Systems and Technology Group, IBM Bblingen IBM Systems 192/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Define a number of strings having multiple devices of a specific type. Enter: a label (optional the default is the word String followed by the device range) the starting device number of the first string (shows the ID of the first defined control unit) the number of devices for each string a fixed offset between subsequent starting device numbers, an optional common description for all devices the desired number of strings with the above attributes On the next page of this tutorial you see how to specify the values for our scenario. Add strings IBM Systems and Technology Group, IBM Bblingen IBM Systems 202/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Specify data for the first range of 8 strings: device type (3390B), default label, starting device number (9000) which equals the ID of the first defined control unit, number of devices (64) per string offset between the first devices of the device ranges (0080) a description (Click on IBM Enterprise Storage Server from above to get a default description) the desired number (8) of strings of type 3390B Press the Add>> button to define the strings now. Add strings IBM Systems and Technology Group, IBM Bblingen IBM Systems 212/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem The first 8 strings with the desired device ranges have been defined: All data remains in the entry fields except: the number of new strings is reset to 1 the starting device number for the next string to be defined is the ID of the starting device number for the last defined string plus the offset: ( = 9400) Edit the shown default values now to add the 3390A strings as shown on the next slide. Add strings IBM Systems and Technology Group, IBM Bblingen IBM Systems 222/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem For each range of defined base devices, we define a corresponding range of alias devices: Specify type 3390A, enter the correct new starting device number (903F + 1 = 9040), specify the number of devices within each string, optionally adjust the offset, and specify the number of required strings (8, same as for 3390B). Press the Add>> button to define the strings. Add strings 903F + 1 = 9040 IBM Systems and Technology Group, IBM Bblingen IBM Systems 232/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Current status: 16 defined strings / device ranges 8 strings with 64 base devices each 8 strings with 64 alias devices each Now add 16 further corresponding strings as follows: 8 strings with 32 base devices each, 8 strings with 3 times 32 = 96 alias devices each Starting device number for the 32 base devices: 93FF+1=9400, offset between devices: 0080 (hex) See the next two slides for input and resulting dialog pages. Add strings IBM Systems and Technology Group, IBM Bblingen IBM Systems 242/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Add strings 8 new strings defined with 32 base devices IBM Systems and Technology Group, IBM Bblingen IBM Systems 252/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Add strings 8 new strings defined with 96 alias devices (selected starting device number: 9420, see left window) Selecting a defined string allows you to modify the string. IBM Systems and Technology Group, IBM Bblingen IBM Systems 262/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Current status: 16 defined strings / device ranges 8 strings with 64 base devices each 8 strings with 64 alias devices each 16 defined strings / device ranges 8 strings with 32 base devices each, 8 strings with 96 alias devices each Now press the Next> button. Add strings IBM Systems and Technology Group, IBM Bblingen IBM Systems 272/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem The IBM provided physical description file for the DS8000 states that the subsystem has just one controller device adapter interface: All strings are hence connected via this single interface. An automatic assignment is done if the number of strings is an even multiple of the controller device adapter interfaces You may cancel the automatic assignment by pressing Disconnect All>>. Now press the Next> button once more. Connect Device Interfaces and String Interfaces IBM Systems and Technology Group, IBM Bblingen IBM Systems 282/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Device ranges and control units are automatically connected if the wizard page is initially invoked, if the number of device ranges is an even multiple of the number of control units. Using the Disconnect All>> button, you can remove the automatic assignment and apply a manual assignment. Now press the Next> button. Connect control units and strings IBM Systems and Technology Group, IBM Bblingen IBM Systems 292/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem When pressing Next> on the Connect Control Units and Strings wizard page, HCM displays the following message: Press OK to start the verification process on the HCD host. After the HCD verification succeeded, the following message is shown: Verification messages IBM Systems and Technology Group, IBM Bblingen IBM Systems 302/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem HCM displays a Summary page showing: which objects have been created which objects have been connected Scroll down to see more information. Press Save this list to create a textual report. Press Finish to complete the wizard and hence the creation of the I/O subsystem. The next page shows an excerpt of the created I/O subsystem in the configuration diagram. Open its context menu to invoke the Controller dialog. Summary IBM Systems and Technology Group, IBM Bblingen IBM Systems 312/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Invoke the Controller dialog from the context menu of the I/O subsystem shown in the configuration diagram. Verify the physical label, serial number, device type, and the label indicating the physical description file. Verify the connected strings in the Strings/Devices section. To see the control units, press the Control Units button to invoke the Control Unit List (see next slide). Verify the definition in the Controller dialog IBM Systems and Technology Group, IBM Bblingen IBM Systems 322/17/2016 HCM and I/O Configuration Management Step 1: Create an I/O Subsystem Verify that all control units are defined, have the correct ID, type, serial number, description, and that the control units are connected to the previously specified device ranges. Note that you might use the Columns button to include the desired values into the list. Press OK to return to the Controller dialog from where you can start the next part of this tutorial. Verify the definitions in the Control Unit List IBM Systems and Technology Group, IBM Bblingen IBM Systems Here is the result of Step 1: Select: View Fit to Window IBM Systems and Technology Group, IBM Bblingen IBM Systems 342/17/2016 HCM and I/O Configuration Management Now proceed to Step 1: Create an I/O subsystem Step 2: Connect the new I/O subsystem to processors with defined channel subsystems IBM Systems and Technology Group, IBM Bblingen IBM Systems 35 HCM and I/O Configuration Management What do we want to achieve in Step 2 ? Prerequisites: In our scenario, the following physical environment is prepared (diagram with physical-only connections) : Select: View Filter Diagram... Objects with physical-only connections Processors and CHPIDs are defined. CHPIDs are connected to switch ports. Your action: Connect the created I/O subsystem to the switch ports. IBM Systems and Technology Group, IBM Bblingen IBM Systems What do we want to achieve in Step 2 ? Processor In Step 2 we want to connect the new I/O Subsystem to the existing channel subsystems of two processors via two switches, in a way that both processors can access the devices in nearly the same way. In detail, we want to achieve the following connections: connects to CUs w. spanned CHPIDs using link address connects to CUs w. spanned CHPIDs using link address Processor connects to CUs w. spanned CHPIDs using link address 10, 12, 14, 18, 1A, 1C PROD1.1 PROD1.0 PROD1.2 PROD , 9100, 9200, F20, 1F21, 1F22, 2F20, 2F21, 2F , 9480, 9500, 9580, 9600, 9680, 9700, , 17, 1E, 1F 1F24, 1F25, 2F24, 2F25 11, 13, 15, 19, 1B, 1D 1F23, 1F24, 1F25, 2F23, 2F24, 2F25 PROD2.0 PROD2.1 PROD2.2PROD , 9180, 9280, 9380 IBM Systems and Technology Group, IBM Bblingen IBM Systems 37 HCM and I/O Configuration Management And here is a preview of the result of Step 2: Here you see the result of Step 2: The new I/O Subsystem is connected to the existing environment. The next slides will show you how to achieve this. IBM Systems and Technology Group, IBM Bblingen IBM Systems 38 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Physical connection Open the Controller dialog from the configuration diagram again as described previously. From the Interfaces list, s elect the controller ports to which you want to connect and press the Connect button. This brings you to the Select Multiple Connection Target(s) dialog. IBM Systems and Technology Group, IBM Bblingen IBM Systems 39 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Now connect the controller to switch F1: Double-click on the + sign besides SWCH_F1 in the right list to open the switch ports of switch F1 as shown in the figure. Select controller interface 01.A(00) (first entry in the left list) and connect it to switch F1, port 20. In the same way, connect: 01.B(01) to F1, port A(04) to F1, port B(05) to F1, port A(08) to F1, port B(09) to F1, port 25 Press the < Filter Diagram and check Objects with physical-only connections IBM Systems and Technology Group, IBM Bblingen IBM Systems 43 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Physical Connection The controller now has physical connections to switch F1 and F2 (note the vertical processor view). IBM Systems and Technology Group, IBM Bblingen IBM Systems 44 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection Connect control units 9000, 9100, 9200, and 9300 to processor PROD1. From the controllers context menu in the configuration diagram, select Control Units... Note: We performed a rearrangement of columns and included: CUADD, Ports, and CHPIDs to see this information later. Now select control units 9000, 9100, 9200, and 9300 and press Connect alike. IBM Systems and Technology Group, IBM Bblingen IBM Systems 45 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Press the PROD1.0 tab. For the selected control units, sequentially select CHPIDs 10, 12, 14, 18, 1A, and 1C for all channel subsystems of PROD1. Press Add > after each CHPID selection. Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 46 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem When pressing Add> in the Processor and CHPID Connections dialog, HCM queries for the link address. Possible link addresses are determined via the controller switch port connections. This is done by HCM for all selected control units. Select the following link addresses: CHPID 10 1F20 CHPID 12 1F21 CHPID 14 1F22 CHPID 18 2F20 CHPID 1A 2F21 CHPID 1C 2F22 Press OK after each step. This leads you to the Add Control Unit Processor Definitions dialog. Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 47 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem In the Add Control Unit Processor Definitions dialog, we set the CUADD offset to 02, due to the way we selected the control units. Also, we want to have sequential CUADD values on the control units 9000 9380, starting with CUADD 0. Press Press OK after each step. The next slide shows the result after completing the connections for all CHPIDs 10, 12, 14, 18, 1A, and 1C for PROD1.0. Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 48 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Connecting Control Units with CHPIDs What we did so far: 4 control units connected to PROD CHPIDs connected to all selected control units Link address had to be chosen for each control unit Now click on tab PROD1.1 to continue defining the same control unit connections. Then do the same for PROD1.2 and PROD1.3. When you are done, click on the Summary tab to view the result (see next slide). Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 49 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Connecting Control Units with CHPIDs What we did so far: 4 control units connected alike to PROD1.0 through PROD1.3 6 CHPIDs connected on each control unit Link addresses have been selected for all connections Now press OK. Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 50 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection Result: Control units 9000, CUADD 00 9100, CUADD 02 9200, CUADD 04 9300, CUADD 05 are connected to the four channel subsystems of PROD1. Now connect control units 9080 CUADD 01 9180 CUADD 03 9280 CUADD 05 9380 CUADD 07 to the four channel subsystems of PROD2. IBM Systems and Technology Group, IBM Bblingen IBM Systems 51 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem For the selected control units, use the following CHPIDs and link addresses: CHPID 11 1F23 CHPID 13 1F24 CHPID 15 1F25 CHPID 19 2F23 CHPID 1B 2F24 CHPID 1D 2F25 Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 52 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem When pressing OK in the Select Link Address dialog, HCM comes up with the Add Control Unit Processor Definitions dialog. The starting CUADD is 01 and we are using offset 02. On the end of this connection scenario we want to have the CUADD values on CU in sequence starting with CUADD 0. Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 53 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem What we do here: 4 control units connected 6 CHPIDs selected for being connected to all selected control units Link address had to be chosen for each control unit Now press on tab PROD2.1 to continue defining connections, then do the same for PROD2.2 and PROD2.3 and view the result on the next slide. Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 54 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Result: Control units: 9000 CUADD 00, 9100 CUADD 02, 9200 CUADD 04, 9300 CUADD 06 are connected to switch F1 and F2 are also connected to CHPIDs 10, 12, 14, 18, 1A, 1C of channel subsystems PROD1.0 to PROD1.3 using available link addresses. Control units: 9080 CUADD 01, 9180 CUADD 03, 9280 CUADD 05, 9380 CUADD 07 are connected to switch F1 and F2 are also connected to CHPIDs 11, 13, 15, 19, 1B, 1D of channel subsystems PROD2.0 to PROD2.3. using available link addresses Scenario: Logical Connection IBM Systems and Technology Group, IBM Bblingen IBM Systems 55 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection Now we us the Connect alike.. function to connect eight unconnected control units in the same way to channel subsystem 3 of PROD1. Connect control units 9400 through 9780 to CHPIDs 16, 17, 1E, 1F of PROD1.3 via switch F1 and F2 using the following link addresses: CHPID 16 1F24 CHPID 17 1F25 CHPID 1E 2F24 CHPID 1F 2F25 IBM Systems and Technology Group, IBM Bblingen IBM Systems 56 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection This slide and the next one show you how to connect CHPID 16 to control unit Continue with the rest of the CHPIDs accordingly. IBM Systems and Technology Group, IBM Bblingen IBM Systems 57 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection Change the starting CUADD value to 20 and use the default offset 01 IBM Systems and Technology Group, IBM Bblingen IBM Systems 58 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection Control units 9400 through 9780 are now connected to PROD1.3. Click OK to return to the Control Unit List and see the result. IBM Systems and Technology Group, IBM Bblingen IBM Systems 59 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Scenario: Logical Connection Result: Control units 9400 through 9780 are connected to channel subsystem PROD1.3. IBM Systems and Technology Group, IBM Bblingen IBM Systems 60 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem Connecting Control Units with CHPIDs We have now finished our scenario to connect all control units of the previously generated subsystem to the required channel subsystems and CHPIDs of pocessors PROD1 and PROD2. Check the connections in the subsystems Control Unit List. You need to scroll right in the list, and you need to enlarge the width of the CHPIDs column. IBM Systems and Technology Group, IBM Bblingen IBM Systems 61 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem: Result and Summary Result: Numerous CU CHPID connections have been established with a few mouse clicks. Spanned CHPIDs and connected CUs in PROD2.0 to PROD A1B1C1D1E1F CU 9080xxxxxx CU 9180xxxxxx CU 9280xxxxxx CU 9380xxxxxx Spanned CHPIDs and connected CUs in PROD1.0 to PROD1.3 Spanned CHPIDs and connected CUs in PROD1.3 IBM Systems and Technology Group, IBM Bblingen IBM Systems 62 HCM and I/O Configuration Management Step 2: Connect the I/O Subsystem: Result and Summary Once again, have a look at the final configuration diagram, with physical-only connections shown: IBM Systems and Technology Group, IBM Bblingen IBM Systems 63 HCM and I/O Configuration Management Where to find more information: HCD/HCM product library References: z/OS 1.13 Hardware Configuration Definition Users Guide, SC z/OS 1.13 and z/VM 6.2 Hardware Configuration Definition Messages, SC z/OS 1.13 Hardware Configuration Planning, GA z/OS 1.13 and z/VM 6.2 Hardware Configuration Manager Users Guide, SC Internet: