| 摘要 |
Each of multiple computers in a cluster of computers negotiates access to locations in a common storage system. Each of the computers (coupled together via a network) in the cluster includes a transaction manager application to coordinate access to shared storage locations (such as a volume or portions thereof) in the storage system. The transaction managers at each of the multiple computers utilize a unified address space that maps locations in the storage system to corresponding access properties maintained by respective transaction managers in the computers. The access properties derived from use of the unified address space indicate an access status of the regions or locations in the shared storage system. If necessary, the computers in a cluster communicate with each other to negotiate access to the shared storage. Also, the computers in a cluster communicate so that current access properties maintained in each computer are consistent.
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