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2019.03.03 更新
趴了一些文章, 有点线索,系统分区是以 raid1来配置的,所以向系统分区写任何东西都会写到所有盘,
剩下的问题就是搞清楚系统空闲的时候到底在向分区写一些什么东西。。 然后再看能不能优化了。。
All disks are currently configured with one 2GB partition for the DSM, one 2GB partition for swap and the rest for the user volume. These values are not configurable.
Then all first partitions are joined into a RAID 1 volume (not visible from DSM UI) and all second partitions are joined together into another RAID 1 volume. This way as far as at least one disk is healthy, there is a working copy of DSM.