Transferring partition configurations

z/OS HCD User's Guide

Transferring partition configurations

z/OS HCD User's Guide
SC34-2669-00

Transferring partition configurations

Use this function to transfer control units and devices attached to a channel path from one partition to another within the same IODF.

In contrast to the Repeat (copy) function, you do not copy the partition and channel paths, but move the attached control units and devices to another partition, possibly in another processor.

Before transferring the data, you must define the target channel path with its partition access and candidate list, dynamic switch ID, entry switch ID and entry port.

The new channel path may have a different type than the source channel path.

On the Partition List, select the Transfer (move) partition configs action from the context menu (or action code x ).
On the Identify Target Partition panel, specify the target processor and partition.

The Transfer Partition Configuration panel is shown. To transfer all control units and devices reached by the source partition, specify a new CHPID value for every source CHPID. The new CHPID of the target partition must exist.

The data-entry fields with sample data are shown in the following figure.

*------------ Transfer Partition Configuration -------------------*
|                                                Row 1 of 8       |
| Specify the new CHPID values.                                   |
|                                                                 |
| From:                           To:                             |
| Processor ID . . . : PROC1      Processor ID . . . : PROC2      |
| Partition name . . : PROD1      Partition name . . : PROD2      |
|                                                                 |
| CHPID  Type   Mode              New CHPID +                     |
| 01     FCP    SPAN              __                              |
| 02     FCP    SPAN              __                              |
| 03     FCP    SPAN              __                              |
| 04     FCP    SPAN              __                              |
| 20     CNC    SHR               __                              |
| 21     CNC    SHR               __                              |
| 25     CNC    DED               __                              |
| 26     CNC    DED               __                              |
*-----------------------------------------------------------------*

After you press the Enter key the Partition List is displayed again.
The attribute values of the transferred control units and devices remain the same for unit address/range, destination link address, time-out, and STADET. The logical address, protocol, and I/O concurrency level of a control unit remain the same if they are compatible with the target processor and channel path. If they are not compatible, default values are used.

Explicit device candidate lists

If the devices that are affected by the Transfer (move) partition configs action from the context menu (or action code x ) have an explicit device candidate list, the result of the transfer action depends on whether or not the device was already connected to the target processor. See Figure 47 for the different combinations. These combinations also apply to the Repeat Partition and Repeat Processor actions.

Figure 47. Result of the Transfer (Move) Partition Configs Action

Transfer source partition	Transfer target partition
	Device already connected to target partition			Device not connected to target partition
	no cand	cand +	cand -	Device not connected to target partition
no cand	=	=	cand +	no cand
cand + (partition included)	=	=	cand +	cand +
cand - (partition not included)	cand - (*)	=	=	cand - (*)
Note: Result of the Transfer Action, Relation of Device to Partition: = no action, target partition remains unchanged no cand no explicit device candidate list exists for partition cand + partition included in explicit device candidate list cand – partition not included in explicit device candidate list

Note:

(*) The source partition is not included in the explicit device candidate list. During the transfer, HCD checks whether all partitions of the source processor in the candidate list have the same name on the target processor. If partitions with the same name on the target processor are identified they are added to the device candidate list for the target processor. If no partition with the same name is found for the target processor, no explicit device candidate list is built. Therefore, a partition transfer can result in a loss of candidate lists, if all partition names between source and target processor are different. It is recommended to run a device compare report after the partition has been transferred.

CF channel paths

Connections of CF sender and CF receiver channel paths will not be transferred. You have to connect them again after having transferred the partition.

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