Now, the most commonly used enterprise hard disk drives (HDDs) are limited by the rate of head movement, the speed of the spinning platter, and seek latency.
现在，大多数常用的企业硬盘驱动器(HDD)都受到磁头移动速度、盘片旋转速度和查找延时的限制。
If you have several disks, splitting load onto separate spindles is an effective way of making reads and writes faster because the largest component of disk latency is the seek time.
如果有多个磁盘，那么把负载分配到不同的磁盘上是加快读写速度的有效方法，因为磁盘延迟的最大组成部分是寻道时间。
Therefore, seek time continues to be the largest source of latency in HDDs.
因此，寻道时间一直是HDD的延迟时间的最主要来源。
Data transfer times are typically fractions of a millisecond, so rotational latency and seek time are the primary sources of disk latency on a physical HDD.
数据传输时间一般几毫秒，所以旋转延迟时间和寻道时间是一个物理hdd的主要磁盘延迟时间来源。
If you add seek time to latency, you get the total access time.
如果执行时间加上查找时间，便会获得全部的存取时间。
Disk performance can be measured in terms of several important characteristics: seek time, latency, access time, and the spin speed of the disk.
磁盘性能，可衡量的几个重要方面的特点：寻找时间，等待时间，存取时间，速度和旋转的磁盘。
Disk performance can be measured in terms of several important characteristics: seek time, latency, access time, and the spin speed of the disk.
磁盘性能，可衡量的几个重要方面的特点：寻找时间，等待时间，存取时间，速度和旋转的磁盘。
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