Handover Overview

A handover is a controlled way to migrate all volumes associated with a particular volume collection to a replication partner without any loss of data. The new owner must be a downstream replication partner for replicas based on this volume collection.

NOTE: To use handover, the replication partners must be active and functional.
A handover instructs a downstream replication partner to become the upstream replication partner and provide the initiators access to volumes. It allows that replication partner to take ownership of a volume collection. Handovers to HPE Cloud volume partners are not supported.
NOTE: If the schedules for the volume collection use multiple partners, performing a handover will halt the schedules for the other downstream replication partner. These schedules will resume if you perform a handover back to the original upstream array.

When you perform a handover, the system displays a confirmation prompt. You can set up a CLI command to prevent the prompt from appearing. See the volcoll command in the Command Reference for more information.

The results of handing over a volume collection are:

  • The volumes associated with the volume collection on this array are set offline.
  • For snapshot replication only: Snapshots of the associated volumes are taken.
  • For snapshot replication only: The snapshots are replicated to the downstream replication partner.
  • Volume collection ownership is transferred to the replication partner.
  • The volumes associated with the volume collection on the replication partner are set online.
  • Schedules that apply to the other downstream partner halt.

By default, the direction of replication is automatically reversed. That is, when the downstream group becomes the owner of the volume collection, the upstream group becomes its replication partner.

NOTE: A handover with synchronously replicated volume collections is transparent to the hosts and does not involve any downtime or host reconfiguration.