ShuhBang!

A little bit of a scandal with a couple hard drive manufactures.  Both Seagate and Western Digital Have been shown to be using SMR in some of their drives.  SMR means Shingled Magnetic Recording, and what it does is pack a little more data onto a HDD platter while adding a performance penalty, and it doesn't play well with RAID.  So, if you have an onsite storage array that you maintain yourself, you might want to verify your HDD's do not have SMR.

See this article for a little more info: Block&Files

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