Processing remote FlashCopy (inband) transactions

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This scenario describes how to successfully process remote FlashCopy® (formerly known as inband FlashCopy) transactions. These transactions can be processed by using the DS CLI remote FlashCopy commands. These transactions cannot be managed through the GUI.

Before you begin

You must be logged in to the DS CLI in interactive command mode.

About this task

Remote FlashCopy commands are issued to a source volume of a remote mirror and copy volume pair on a local storage system. This process enables a FlashCopy pair to be established at the remote site and eliminates the need for a network connection to the remote site solely for the management of FlashCopy. The following steps are based on an example that uses the sites LSS 22 and LSS 2A.

Procedure

  1. You must determine which volumes are available for use and then establish a remote mirror and copy path between LSS 22 and LSS 2A.
    1. Enter the lsavailpprcport command to obtain a report that lists which volumes are available for use. 
      dscli> lsavailpprcport -dev IBM.2107-1300861 
-remotedev IBM.2107-1300871 -remotewwnn 5005076303FFC03D 22:2A

      The following report is generated.

      Local port Attached port Type
      I0030 I0031 FCP
      I0031 I0030 FCP
      I0100 I0101 FCP
      I0101 I0100 FCP
    2. Enter the mkpprcpath command to establish the remote mirror and copy path between LSS 22 and LSS 2A. 
      dscli> mkpprcpath -dev IBM.2107
-1300861 -remotedev IBM.2107-1300871 
-remotewwnn 5005076303FFC03D -srclss 22 -tgtlss 2A I0030:I0031 I0100:I0101

      The following confirmation is displayed if your command input is correct.

      CMUC00149I mkpprcpath: Remote Mirror and Copy path 22:2A successfully
 established.
  2. Enter the mkpprc command to establish a remote mirror and copy pair (2200 to 2A00). 
    dscli> mkpprc -dev IBM.
2107-1300861 -remotedev IBM.
2107-1300871 -type mmir 2200:2A00

    The following confirmation is displayed if your command input is correct.

    CMUC00153I mkpprc: Remote Mirror and Copy volume pair relationship
 2200:2A00 successfully created.
  3. Enter the mkremoteflash command to use LSS 22 on the local site as a conduit LSS for new remote FlashCopy relationships on the remote storage system. These new relationships use volume 2A00 as their source. The target can be any other volume on the remote storage system (in this scenario, 2A01). 
    dscli> mkremoteflash -dev IBM.2107-1300871
-conduit IBM.2107-1300861/22 
-record 2A00:2A01

    The following confirmation is displayed if your command input is correct.

    CMUC00173I mkremoteflash: Remote FlashCopy volume pair 2A00:2A01 successfully 
created. Use the lsremoteflash command to determine copy completion.
  4. Enter the resyncremoteflash command because the remote FlashCopy relationship (2A00:2A01) was created with the -record parameter. 
    dscli> resyncremoteflash -dev IBM.
2107-1300871 -conduit IBM.2107-1300861/22 
-record 2A00:2A01

    The following confirmation is displayed if your command input is correct.

    CMUC00175I resyncremoteflash: Remote FlashCopy volume pair 2A00:2A01 
successfully resynched. Use the lsremoteflash command to determine copy
 completion.
  5. Enter the lsremoteflash command to verify that the transaction processed as you intended. 
    dscli> lsremoteflash -dev IBM.2107
-1300871 -conduit IBM.2107-1300861/22 
2A00:2A01

    The following report is displayed if your command input is correct.

    ID SrcLSS Sequence Num ActiveCopy Recording
    2A00:2A01 2A 0 Disabled Enabled
    Persistent Revertible
    SourceWrite
    Enabled
    TargetWrite
    Enabled
    Background
    Copy
    Enabled Disabled Disabled Disabled Enabled