| 摘要 |
A networked storage system includes network-attached file system (FS) nodes implementing a distributed global file system. Each FS node includes a file system server and at least one storage system including storage resources (such as disk drives) representing portions of a global file system storage space. The FS nodes are organized according to respective cost-performance characteristics of the storage systems, generally ranging from a high-cost, high-performance characteristic to a low-cost, low-performance characteristic. A storage management system performs information lifecycle management (ILM) which includes allocating the FS nodes for storing data according to a mapping between an ILM-based data classification scheme and the cost-performance characteristics of the storage devices, as well as dynamically managing the placement of data among the storage devices according to the ILM-based classification of the data. The storage management system also performs global file system management including allocating a set of identifiers (e.g. segment identifiers) of the distributed global file system among the FS nodes, and dynamically adjusting the allocation of the identifiers among the FS nodes in response to the addition and removal of whole storage systems and/or storage resources within each of the storage systems.
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