Creating Fibre Channel paths (Global Mirror setup)

Edit online

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

About this task

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

Complete the following steps to create Fibre Channel paths between all Global Mirror source and target pairs and between the Master and subordinate storage systems. 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.

Procedure

  1. Obtain the worldwide node name of the secondary storage system. 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 input is the entire command. No additional variables are needed.

    The showsi command does contain a variable and a command parameter: dscli> showsi storage_image_id -fullid

    Example
    dscli> showsi  -fullid IBM.2107-75FA120
    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 system.
    3. Use the -fullid parameter 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 system so that it can be used when you issue the mkpprcpath command.
  2. 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.2107-75FA120
 -remotedev IBM.2107-75FA150 -remotewwnn 12341234000A000F 01:01
    Notes:
    1. The -remotedev parameter specifies the ID of the secondary storage system.
    2. The -remotewwnn parameter must specify the worldwide node name of the secondary storage system. If you make a mistake and specify the worldwide node name of the primary storage system, 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 -devstorage_image_ID and -remotedevstorage_image_ID parameters. If the fully qualified -dev and -remotedev parameters are not used, you must use the fully qualified source_LSS_ID:target_LSS_ID value. For example: IBM.2107-75FA120/01:IBM.2107-75FA150/01.
      The fully qualified source_LSS_ID:target_LSS_ID value must be placed after the -remotewwnn value in your command line. Your command line can look like the following example:
      dscli> lsavailpprcport -l -remotewwnn 12341234000A000F 
IBM.2107-75FA120/01:IBM.2107-75FA150/01
  3. 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 systems. 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.2107-75FA120 -remotedev 
IBM.2107-75FA150 -remotewwnn 12341234000A000F
-srclss IBM.2107-75FA120/00
-tgtlss IBM.2107-75FA150/01 I1A10:I2A20
    Notes:
    1. The -remotedev parameter specifies the ID of the secondary storage system.
    2. The -remotewwnn parameter must specify the worldwide node name of the secondary storage system. If you make a mistake and specify the worldwide node name of the primary storage system, 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 -srclsssource_LSS_ID value. For example: -srclss IBM.2107-75FA120/00.
    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 -tgtlsstarget_LSS_ID value. For example: -tgtlss IBM.2107-75FA120/01.
    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 -devstorage_image_ID and -remotedevstorage_image_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.2107-75FA120/I1A10:IBM.2107-75FA150/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.2107-75FA120/I1A10:IBM.2107-75FA150/I2A20