Do not stack external drives on top of each other
I just figured something out:
External drives should not be stacked one on top of the other.
I have 3 of them on my desk and have been copying data from one to the other all day. I was amazed at how slow the transfers were, only 12MB/s.
After awhile i began to wonder if vibration from the one on the bottom could be making it more difficult for the one on top to track and vice-versa, so I unstacked them and the write speed shot up to 20MB/s immediately and has been in the mid 20's since.
Stupid thing to be just figuring out, they look so cool stacked up, but they work much better if they are not.
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