| 摘要 |
A media element library defines a virtual configuration different from the physical configuration of media and drives actually present in the library. A host computer system communicates with the library as if it were communicating with a conventional library having a physical configuration identical to the virtual configuration defined by the library. Library users configure the library to incorporate fault tolerance and/or performance enhancements such as data striping or mirroring, and the host computer utilizes the benefits of such enhancements by manipulating the virtual configuration in a conventional manner.
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