Storage Structure 存储结构 Main memory -only large storage media that the CPU can access directly.主存-CPU可以直接访问的唯一大型存储介质 Secondary storage -extension of main memory that provides large nonvolatile storage capacity二级存储器-主存的扩展提供了非易失的存储容量 e Magnetic disks -rigid metal or glass platters covered with magnetic recording materia|磁盘覆盖了磁记录材料的硬金属或玻璃盘片 Disk surface is logically divided into tracks, which are subdivided into sectors磁盘表面逻辑划分了磁道、再划分为扇面 The disk controller determines the logical interaction between the device and the computer.磁盘驱动器确定设备和计算机之间的相互作用 Applied Operating System Concepts 2.11Applied Operating System Concepts 2.11 Storage Structure 存储结构 • Main memory – only large storage media that the CPU can access directly.主存- CPU可以直接访问的唯一大型存储介质 • Secondary storage – extension of main memory that provides large nonvolatile storage capacity.二级存储器-主存的扩展提供了非易失的存储容量 • Magnetic disks – rigid metal or glass platters covered with magnetic recording material 磁盘-覆盖了磁记录材料的硬金属或玻璃盘片 – Disk surface is logically divided into tracks, which are subdivided into sectors.磁盘表面逻辑划分了磁道、再划分为扇面 – The disk controller determines the logical interaction between the device and the computer. 磁盘驱动器确定设备和计算机之间的相互作用