The procedure for deleting external volumes and virtual volumes to reduce data copy load is as follows.
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Cancel allocation of the virtual volumes to be deleted to the migration destination server.
For the allocation cancellation procedure, see Canceling allocation of volumes to compute nodes (Cloud) in the VSP One SDS Block and SDS Cloud System Administration.
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Detach the Google Cloud Hyperdisk corresponding to the virtual volume and external volume
to be deleted from the Compute Engine of the initiator node by using the Google
Cloud Console.
For details about how to find a Google Cloud Hyperdisk corresponding to the virtual volume and external volume to be deleted, see step 23 of Adding initiator nodes.
CAUTION:If the Google Cloud Hyperdisk cannot be detached, perform maintenance blocking for the initiator node, and then detach the Google Cloud Hyperdisk while the Compute Engine of the initiator node is stopped. Then, perform maintenance recovery for the initiator node. For details about the maintenance procedures for the initiator node, contact customer support.
- Perform step 9 to 12 in Stopping data migration.