If all the data fits in the cache, then the data is read from disk only once; after that, all requests are satisfied from the cache at memory speed.
如果所有数据都在缓存中，那么只需从磁盘读取一次数据；毕竟，所有的请求都可以用内存速度从缓存中得到满足。
On a PC, run Disk Cleanup and Disk Defragmenter at least once a month. This will store files more efficiently so your system doesn't slow down.
在个人电脑上，每月至少运行一次磁盘清理和磁盘碎片整理程序这将更有效地存储文件确保您的系统不会慢下来。
Virtual segment also contains dictionary cache, stored procedures cache, and big buffer pools used for writing large block of pages to disk at once.
虚拟内存段还包含字典缓存器，存储过程缓存器，以及在向磁盘一次性写入大块页面时使用到的较大的缓冲池。
Critical GPT data structures are stored twice on the disk: once at the start and again at the end.
关键的GPT数据结构在磁盘上存储两次：开始和结束时各一次。
The silver was at once removed from the large disk, and the new reflecting surface applied.
于是银粉立即从大圆盘上除去，新的反射层取而代之。
Once it hits that threshold, you'll get an error message that says "Insufficient free space on hard disk drive (HDD). At least 32MB required."
一旦它到达上限，你会看到以下错误讯息：「没有足够的硬碟空间，至少需要32MB。
Once it hits that threshold, you'll get an error message that says "Insufficient free space on hard disk drive (HDD). At least 32MB required."
一旦它到达上限，你会看到以下错误讯息：「没有足够的硬碟空间，至少需要32MB。
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