无论主日志是空的还是满的，所需的磁盘空间量都是相同的。
A primary log, whether empty or full, requires the same amount of disk space.
取代用几个小时用完磁盘空间，您可以快速发现当磁盘满时，您系统如何反应。
Instead of taking several hours to run out of disk space, you can quickly find out how your system will react when your disk is full.
取代用几个小时用完磁盘空间，您可以快速发现当磁盘满时，您系统如何反应。
Instead of taking several hours to run out of disk space, you can quickly find out how your system will react when your disk is full.
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