Two identical commands [02 TB HDD WD RED 4] Amazon on two separate accounts: 04 hard drives are not guaranteed not Western Digital when checking serial numbers on their website. This means that these records come from another distributor that Digial Western Europe, but America or Asia. So in case of problems, Western Digital will not issue supported under warranty. The product overview page ad 24 months warranty. It is outdated, since Western Digital spent the warranty to 36 months for the RED series. Moreover, it is the old range NASware 2.0, Western Digital business since the beginning of summer the new NASware 3.0. Back discs expense Amazon, reimbursement of 04 hard drives. We have returned to a local distributor, pay a little more but at least with a guarantee under the Code of consumption. Amazon Congratulations! This is neither legal nor commercial.