Constellation class drives are much pricier that their regular counterparts, but in this instance I was building a server, and data protection was paramount. When your data is at stake, its stupid to buy cheap drives for the most important part of the PC --your data! The extra features help to reduce false positives, and the energy savings make the server less expensive to run in the long run. Drives arrived extremely well packed and all 6 drives dropped right in without an issue. Very fast RAID performance. Happy with these drives. If they all live out their warranty, I'll have gotten more than my moneys worth.
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