Filesystems 主存储和辅助存储以及稳定存储之间的区别？

我正在读RDBMS中的文件系统

我有些怀疑

我知道这三种文件系统之间的一些区别。是的

• 主存储器：-

     * Main storage is temporary.
     * The main storage is directly accessible from CPU.
     * Main storage is a volatile memory.
  

     * Secondary storage is permanent.
     * Secondary storage is directly accessible form main storage.
     * Secondary storage is a non-volatile memory.
  

     * The stable storage gives the guarantees for the atomicity for a given write operation in database.
     * All logs are written onto the stable storage.
     * In stable storage the data is written in more than one disk.
  

• 辅助存储：-

     * Main storage is temporary.
     * The main storage is directly accessible from CPU.
     * Main storage is a volatile memory.
  

     * Secondary storage is permanent.
     * Secondary storage is directly accessible form main storage.
     * Secondary storage is a non-volatile memory.
  

     * The stable storage gives the guarantees for the atomicity for a given write operation in database.
     * All logs are written onto the stable storage.
     * In stable storage the data is written in more than one disk.
  

• 稳定储存：-

     * Main storage is temporary.
     * The main storage is directly accessible from CPU.
     * Main storage is a volatile memory.
  

     * Secondary storage is permanent.
     * Secondary storage is directly accessible form main storage.
     * Secondary storage is a non-volatile memory.
  

     * The stable storage gives the guarantees for the atomicity for a given write operation in database.
     * All logs are written onto the stable storage.
     * In stable storage the data is written in more than one disk.
  

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这三个文件系统之间还有其他区别吗。

对于稳定的存储，您忽略了这些区别

• 从多次电源故障中恢复而不丢失数据保证
• 针对写入操作后立即出现的错误，这会增加
  或替换存储的数据

• 此存储使用多个磁盘来保存相同的数据，因此，如果发生写入操作，则相同的信息将同时写入所有连接的磁盘

一般的区别是,

• 寻道时间-从请求数据到启动的平均时间 读取请求的数据
• 容量—可存储在介质上的数据量
• 写入类型-无论是只读、只读还是可读和 可写

• 成本-每兆字节的成本是多少

有关数据存储的更多信息，请参阅。红色