Migrating data

True Copy User Guide for VSP One Block
Version
10.4.x
Audience
anonymous
Part Number
MK-23VSP1B020-04

You typically migrate data to copy data to a new volume, to temporarily move data from an LU to accommodate other activities (for example, to make repairs), or to relocate LUs in order to balance workloads and distribute I/O activity evenly within or across storage systems.

  1. Make sure that the data path is installed, and TrueCopy configuration procedures are completed.
  2. Verify the target volume (S-VOL) is offline from all attached hosts. The source volume (P-VOL) can remain online.
  3. Connect to the storage system that contains the volume to be migrated.
    Add a remote connection in a storage system that contains the volume to be migrated, and then register storage systems in the secondary site.
  4. Create a TrueCopy pair using the CCI paircreate command.
    You can perform this task
  5. When pair status changes to PAIR, the operation is completed.

    You can monitor the progress of the operation in CCI using the pairdisplay command.

  6. If you use CCI commands to migrate data, first delete the TC pair by the pairsplit command, then reset the pair in the reverse direction by specifying the -f never option of the paircreate command.
If the original P-VOL is temporarily unavailable for update copy operations, split the new pair so that the new primary system keeps track of changes.