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 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。
Memory and CPU based access can provide much lower latency and greater throughput than disk and network based access.
相比基于磁盘和网络的访问，基于内存和CPU的访问能提供更低的延迟和更高的吞吐量。
Review your data on a week-to-week basis and monitor stats that reflect CPU utilization, disk usage, mail delivery latency (if you are running mail), memory utilization, and network utilization.
每周定期查看数据，并监控反映cpu利用率、磁盘使用、邮件发送延迟(如果运行邮件的话)、内存利用率和网络利用率的统计数据。
Proponents make the case that disk-oriented approaches to online storage are problematic, do not scale gracefully and while disk capacity has exploded — access latency and bandwidth has not kept pace.
众多支持者认为使用磁盘存储在线数据会产生很多问题，无法实现优雅地可伸缩性，而磁盘容量也会不断膨胀——访问延迟与带宽并非协调一致。
Should you have some real numbers for your disk service time or average request latency, you can plug them in to the calculations above to get better performance estimates.
如果您有磁盘服务时间或平均请求延时的真实数据，可以把它们放进上面的算式，从而计算出更准确的性能估计值。
Much of the tuning to follow, especially that pertaining to the database, focuses on avoiding disk access because of the relatively high latency it incurs.
对磁盘的许多调优(尤其是对于数据库)集中于避免磁盘访问，因为磁盘访问的延迟相当高。
The average rotational latency is one-half of a revolution of the disk platter.
平均旋转等待时间指的是磁盘旋转一半的时间。
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。
Over the last 30 years latency on disk has only improved by a factor 2x, from around 20ms to 10ms.
过去30年间，磁盘延迟只得到了2倍的提升，从20ms减少到了10 ms。
If your cloud system supports it, keep this table in memory (" custom Settings ") versus on-disk for lower latency.
如果你的云系统支持此功能，把这个列表放入内存(“自定义设置”)来减少磁盘读取的等待时间。
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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