| 摘要 |
A method maintains a valid volume table of contents (VTOC) written to in a fast replication relationship. A fast replication query is issued to a track in which the volume table of contents (VTOC) resides. If the query determines that a background copy is in progress, a volume having the track is designated as unusable. An apparatus maintains a valid volume table of contents (VTOC) written to in a fast replication relationship. A controller issues a fast replication query to a track in which the volume table of contents (VTOC) resides. If the query determines that a background copy is in process, a volume having the track is designated as unusable.
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