The upside, as I mentioned, is that it's log structured, so writes are sequential in nature (minimizing seek behavior of the physical disk) and thus very fast.
前面已经提到，它的优点在于它是日志结构的，采用连续写的方式(减少物理磁盘的查找行为)，因此非常快。
3
When logical overwrite is performed a number of times, arbitrary data achieved before logical overwrite are reproduced by sequential reference to the old physical address of the correlation table.