Defining device data
- On the Primary Task Selection panel,
select Define, modify, or view configuration data and
on the resulting panel, select I/O devices. HCD displays
an initial I/O Device List where devices with consecutive device numbers
having the same definitions are automatically grouped together (Figure 1).
A device group is shown as
device number,range. A range value of one (1) is not explicitly shown. For example, the entry'0002,4 3390A'indicates a device group of four devices of type 3390A with consecutive device numbers from 0002 through 0005. Using action Work with single I/O devices from the context menu (or action code s ) displays the I/O Device list showing all single devices defined in the IODF, with all device groups resolved (Figure 2).Figure 1. I/O Device List with device groups Goto Filter Backup Query Help -------------------------------------------------------------------------- I/O Device List Row 1 of 2370 More: > Command ===> ___________________________________________ Scroll ===> CSR Select one or more devices, then press Enter. To add, use F11. ----------Device------ --#--- --------Control Unit Numbers + -------- / Number Type + CSS OS 1--- 2--- 3--- 4--- 5--- 6--- 7--- 8--- _ 0000 3380 1 ____ ____ ____ ____ ____ ____ ____ ____ _ 0001 3390A 3 1 0001 0002 ____ ____ ____ ____ ____ ____ _ 0001 3390A 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0001 3390A 1 ____ ____ ____ ____ ____ ____ ____ ____ s 0002,4 3390A 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0002,8 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ _ 0006,3 3390 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 000A 3380 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 000B 3820 1 ____ ____ ____ ____ ____ ____ ____ ____ _ 000C,12 3590 1 ____ ____ ____ ____ ____ ____ ____ ____ # FFFC CFS FFFE ____ ____ ____ ____ ____ ____ ____ # FFFD CFS FFFE ____ ____ ____ ____ ____ ____ ____ # FFFE CFS FFFE ____ ____ ____ ____ ____ ____ ____ # FFFF CFS FFFE ____ ____ ____ ____ ____ ____ ____ F1=Help F2=Split F3=Exit F4=Prompt F5=Reset F7=Backward F8=Forward F9=Swap F10=Actions F11=Add F12=Cancel F13=Instruct F20=Right F22=CommandThe
#sign in front of a row indicates that this row is disabled. You cannot modify or delete it. In the example from Figure 1, you can see four devices of type CFS that are used for coupling facility connections.If you scroll to the right in the I/O Device List, you can see additional columns PU (showing the PPRC usage), Serial-#, Description, and VOLSER.
Figure 2. I/O Device List with single devices Goto Filter Backup Query Help -------------------------------------------------------------------------- I/O Device List Row 9 of 49852 More: > Command ===> ___________________________________________ Scroll ===> CSR Select one or more devices, then press Enter. To add, use F11. ----------Device------ --#--- --------Control Unit Numbers + -------- / Number Type + CSS OS 1--- 2--- 3--- 4--- 5--- 6--- 7--- 8--- _ 0002 3390A 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0002 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ _ 0003 3390A 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0003 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ _ 0004 3390A 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0004 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ _ 0005 3390A 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0005 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ _ 0006 3390 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0006 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ _ 0007 3390 2 1 0001 ____ ____ ____ ____ ____ ____ ____ _ 0007 3390A 3 0001 0002 ____ ____ ____ ____ ____ ____ F1=Help F2=Split F3=Exit F4=Prompt F5=Reset F7=Backward F8=Forward F9=Swap F10=Actions F11=Add F12=Cancel F13=Instruct F20=Right F22=CommandColumns
CSSandOSstate the number of channel subsystems and operating systems accessing the device. If the I/O Device List is called from the Processor List or Channel Subsystem List, the number in the IM column states how many partitions (images) of the selected processor or channel subsystem are accessing the device. For basic processors this value is one.If the I/O Device List is called from either- the Operating System Configuration List
- the Processor List for SMP processor
- the Channel Subsystem List for XMP processor
- Use F11=Add to add I/O devices. The data-entry fields are shown in the following figure, with
sample data:
Figure 3. Add Device Add Device Specify or revise the following values. Device number . . . . . . . . 01E1 + (0000 - FFFF) Number of devices . . . . . . 8 Device type . . . . . . . . . 3390A + Serial number . . . . . . . . __________ Description . . . . . . . . . PAV alias device _______________ Volume serial number . . . . . ______ (for DASD) PPRC usage . . . . . . . . . . _ + (for DASD) Connected to CUs . . 01E1 ____ ____ ____ ____ ____ ____ ____ + F1=Help F2=Split F3=Exit F4=Prompt F5=Reset F9=Swap F12=CancelIn the Device number field, you can use the
F4=Promptkey to have a list displayed containing unused device number ranges. If you select a proposal from this list, HCD fills Device number and Number of devices with the selected values.The Add Device panel can also be used to specify the control units the devices are connected to.
For a DASD device, you can optionally define its peer-to-peer remote copy (PPRC) usage type as either:
- Duplex (D)
- A volume composed of two physical devices within the same or different storage subsystems that are defined as a pair by a dual copy, PPRC or XRC operation and are not in suspended or pending state. The operation records the same data onto each volume.
- FlashCopy (F)
- A point-in-time copy services function that can quickly copy data from a source location to a target location.
- Simplex (S)
- A volume is in the simplex state if it is not part of a dual copy or a remote copy volume pair. Ending a volume pair returns the two devices to the simplex state. In this case, three is no longer any capability for either automatic updates of the secondary device or for logging changes as it would be the case in a suspended state.
- Utility (U)
- A volume that is available to be used by the extended remote copy function to perform data mover I/O for a primary site storage control's XRC-related data. A device that is used to gather information about the environment for configuration setup. It is also used to issue PPRC Freeze commands to the SSID-pair.
- Nonsysplex (N)
- A special case of SIMPLEX which can be used for z/VM devices in a z/VM-z/OS-mixed environment.
Whereas a classification as Flashcopy, Simplex, Utility, or Nonsysplex is only of a descriptive character, the Duplex usage type of a DASD device triggers the following: Duplex devices, attached to a primary operating system configuration with OFFLINE=YES are defined to an optional D/R site OS configuration with OFFLINE=NO and vice versa, when the D/R site OS configuration is generated (see also D/R site OS configurations).
Since VM dummy devices are definable with an arbitrary device type, a device with an unknown device type is accepted by HCD. It is treated like an unsupported device with the device type DUMMY. For MVS-type systems, you have to explicitly define the device as DUMMY.