After the new structure is allocated, for both rebuild and duplexing rebuild, the system attempts to connect (Attach phase) active connectors to the new structure. If there are no active connectors to the structure, this phase is skipped.

For each connector, the attachment information is the same in the old and new structure, and the local vector token associated with each user designates the same local vector. There is only one allocated vector for each connection to a duplexed structure. The local vector token is used to physically attach each active connector to the new structure.

If the system is unable to connect an active connector to the new structure, the rebuild or duplexing rebuild process stops. See Handling Loss of Connectivity during System-Managed Processing.

Failed-persistent connectors are attached to the new structure at the beginning of the Copy phase.