A database complicates the matter, because it caches some disk writes, which may result in an inconsistent snapshot.
数据库使问题复杂化，因为它缓存了一些磁盘写操作，这可能会生成一个不一致的快照。
2
The filesystem driver updated the appropriate metadata, but didn't have time to flush the data from its caches to the new blocks on disk.
文件系统驱动程序更新适当的元数据，但是没有时间将其缓存中的数据刷新到磁盘的新块中。
3
He believes SSD is a great technology to replace hard disks in very high IOPS workloads, or when data cannot go to disk and must be held by main-memory (RAM) caches.