Creating fibre-channel paths (Global Mirror setup)

Complete this task to create fibre-channel paths between all Global Mirror source and target pairs and between the Master and subordinate storage units. This is the first step in setting up your Global Mirror environment.

Create paths so that the logical subsystems (LSS's) are associated with each other. These are the ports that the copy services I/O pass through. It is preferred that they are not the same ports that are used for host I/O. This ensures that there is enough capacity for the data transfer.

Perform the following steps to create fibre-channel paths between all Global Mirror source and target pairs and between the Master and subordinate storage units. The example commands displayed in this task are shown in two formats. The first format shows the type of information the command requires. The second format provides the command with declared values for the variables.

Obtain the worldwide node name of the secondary storage unit. This information is needed when you do the next step. Enter the lssi or showsi at the dscli command prompt as follows:
```
dscli>lssi -l
```
This is the entire command. there are no additional variables needed.
The showsi command does contain a variable and a command flag: dscli>showsi storage_image_id -fullid
Example
```
dscli>showsi -fullid IBM.1750–685FA120 
```
Notes:
1. Use the lssi command if you want to display a list of all the storage image instances for a storage-complex and status information for each storage image in the list.
2. Use the showsi command if you want to display the detailed properties of a specific storage unit.
3. Use the -fullid DS CLI command flag with the showsi command to display fully qualified IDs, which include the storage image ID, for every ID that is displayed in the command output.
4. Record the worldwide node name for the secondary (target) storage unit so that it can be used when you issue the mkpprcpath command.
Issue the lsavailpprcport command to display a list of fibre-channel I/O ports that can be defined as remote mirror and copy paths. Enter the lsavailpprcport command at the dscli command prompt with the parameters and variables shown as follows:
dscli>lsavailpprcport -dev storage_image_ID -remotedev storage_image_ID -remotewwnn wwnn source_LSS_ID:target_LSS_ID
Example
```
dscli>lsavailpprcport –l –dev IBM.1750-68FA120
 -remotedev IBM.1750-68FA150 –remotewwnn 12341234000A000F 01:01
```
Notes:
1. The -remotedev parameter specifies the ID of the secondary storage unit.
2. The -remotewwnn parameter must specify the worldwide node name of the secondary storage unit. If you make a mistake and specify the worldwide node name of the primary storage unit, the command fails.
3. The shortened version of the source_LSS_ID:target_LSS_ID parameter is shown (value = 01:01) because the example uses the fully qualified -dev storage_image_ID and -remotedev storage_immage_ID parameters. If the fully qualified -dev and -remotedev parameters were not used, you must use the fully qualified source_LSS_ID:target_LSS_ID value. For example: IBM.1750-68FA120/01:IBM.1750-68FA150/01
  The fully qualified source_LSS_ID:target_LSS_ID value must be placed after the -remotewwnn value in your command line. For example, your command line would look like the following:
  dscli>lsavailpprcport –l –remotewwnn 12341234000A000F IBM.1750-68FA120/01:IBM.1750-68FA150/01
Issue the mkpprcpath command to create the fibre-channel paths between all Global Mirror source and target pairs and between the Master and subordinate storage units. Enter the mkpprcpath command at the dscli command prompt with the following parameters and variables as follows:
dscli>mkpprcpath -dev storage_image_ID -remotedev storage_image_ID -remotewwnn wwnn -srclss source_LSS_ID -tgtlss target_LSS_ID source_port_ID:target_port_ID
Example
```
dscli>mkpprcpath -dev IBM.1750-68FA120 -remotedev
IBM.1750-68FA150 -remotewwnn 12341234000A000F
 -srclss 00 -tgtlss 01 I1A10:I2A20
```
Notes:
1. The -remotedev parameter specifies the ID of the secondary storage unit.
2. The -remotewwnn parameter must specify the worldwide node name of the secondary storage unit. If you make a mistake and specify the worldwide node name of the primary storage unit, the command fails.
3. The shortened version of the -srclss parameter is shown (value = 00) because the example uses the fully qualified -dev storage_image_ID parameter. If the fully qualified -dev parameter was not used, you must use the fully qualified -srclss source_LSS_ID value. For example: -srclss IBM.1750-68FA120/00.
4. The shortened version of the -tgtlss parameter is shown (value = 01) because the example uses the fully qualified -dev storage_image_ID parameter. If the fully qualified -dev parameter was not used, you must use the fully qualified -tgtlss target_LSS_ID value. For example: -tgtlss IBM.1750-68FA120/01.
5. The shortened version of the source_port_ID:target_port_ID parameter is shown (value = I1A10:I2A20) because the example uses the fully qualified -dev storage_image_ID and -remotedev storage_immage_ID parameters. If the fully qualified -dev and -remotedev parameters were not used, you must use the fully qualified source_port_ID:target_port_ID value. For example: IBM.1750-68FA120/I1A10:IBM.1750-68FA150/I2A20.
  The fully qualified source_port_ID:target_port_ID parameter is positional on your command line. It must be placed after the -tgtlss parameter and value. For example:
  dscli>mkpprcpath -srclss 00 -tgtlss 01 IBM.1750-68FA120/I1A10:IBM.1750-68FA150/I2A20