通过数据库管理的空间(DMS)和原始设备，我们可以减少磁盘资源的故障转移时间，因为在故障转移时将不会进行磁盘检查。
With database managed space (DMS) and raw device, we can decrease the time to fail over the disk resources, because there will be no checking of disks during failover.
如果数据库很大，那原始设备的使用也能减少故障转移时间，因为进行故障转移时，操作系统不必对文件系统进行文件检查(fsck)。
Raw device usage also improves failover time in case the database is large, because during failover the operating system does not have to do a file check to the file system (FSCK).
根据变电设备自身特性与故障诊断特点，重点讨论了专家系统的数据库和知识库设计。
According to the characteristic of equipment and fault diagnosis, both database and knowledge base are discussed emphatically.
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