But, because XFS delayed its allocation decision, it was able to write the data in one fell swoop, improving write performance as well as reducing overall filesystem fragmentation.
但是，因为XFS延迟了它的分配决定，所以，它能够一下子写完数据，从而提高了写性能，并减少了整个文件系统的碎片。
Not only is it impossible to write multiple data blocks to disk simultaneously, but writing every data block to disk when any part of it changes would be bad for system performance.
不仅不可能同时将多个数据块写入磁盘，而且每当进行修改时马上将每个数据块写入磁盘，也对系统性能有不利影响。
These applications write their data only once but they read it one or more times and require these reads to be satisfied at streaming speeds. HDFS supports write-once-read-many semantics on files.
这些应用都是写数据一次，读却是一次到多次，并且读的速度要满足流式读。
The procedure is to prepare the basis of a page to read and write, but it also supports a single, multiple, or even the whole chip to read and write data.
本程序就是按页读写编写的，但它也支持单个﹑多个﹑甚至整个芯片内数据的读写。
An application reserves space in the log when it has data that is to be written to the log in the future, but cannot write it immediately.
如果应用程序有将在日后写入记录档但无法立即写入的资料时，应用程序就会在记录档中保留空间。
An application reserves space in the log when it has data that is to be written to the log in the future, but cannot write it immediately.
如果应用程序有将在日后写入记录档但无法立即写入的资料时，应用程序就会在记录档中保留空间。
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