HP Storage Mirroring V5 Software - Manual (Page 31)

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If your source was disconnected from the network during the cutover process,
the original job that was mirroring the data will still be active on that machine.
Do not bring that machine back on the network. If you do, the original job will
attempt to begin mirroring data again which could result in data loss. While the
machine is still disconnected from the network, stop the Storage Mirroring
service, delete the file connect.sts located in the Storage Mirroring Data
Migration installation directory, and then restart the Storage Mirroring. This will
delete the original job. After the original job is deleted, you can bring the
machine on the network if desired.