question1(http://stackoverflow.com/questions/36737023/elasticsearchhow-to-make-a-balance-of-the-usage-of-disk?noredirect=1#comment61059094_36737023) tells me: the shards' files are all allocated on one path only and not spread on all paths. And ES will not try to balance the files between paths.
question2 tells me:if you define more than one location (one per disk for example) it will use both disks and will benefit from the increased IOPS.
I am confused..
I just want to make the usage of the disk are almost equal.