Good data storage with entry-qualities

We begin with the same negativity, which simultaneously represents the star deduction:
Booked through Amazon now the third disk of this type, previously ordered than other shippers and each time also good paid shipping.

The disks were obtained, under a Windows Server OS through reformatted (exFAT, no quick format), after that I drüberlaufen the Herstelltertool (SeaTools) - hard drives defective, namely both with the same error message: bad sectors, and these could not be corrected.
---
Little background information: each disk (or their Platter) has (well, more or less) fixed from the beginning bad sectors, these are only each disk has reserve areas that are used for this purpose. With particularly durable hard drives for continuous operation and / or server, the manufacturer builds certain mechanisms that prevent or correct particularly well, so that the customer nothing / very little will notice here the display (and submit before a provision in the amount of the suspected effects in subrogation the companies to;)).
---
What I did not know at this point: the SeaTools work apparently in this drive by the other processing and correction of errors (ERC) is not correct, so that every time a failed disk is displayed. Use but also the first time in the private sector entry-Enterprise drives, something I'm used only for devices with SAS.

For the HDD Amazon this error occurred on, but I let myself then to other test programs, and lo and behold - the SMART test at once without any problems, all parameters within normal specifications. Even with the advanced tests no problems - the manufacturer of the overall test tools draw here apparently many times faster or to have the standard functions already implemented and read them out correctly.
On closer investigation, I'm lt div forums probably not the only one who has this problem -.. Only the repair of the Software will be long in coming. SeaTools is currently (apparently) with the in-house ERC for enterprise hard drives not clear.

Otherwise, the hard drive is also using the full power of the APM (AAM does not exist: Server disk for continuous operation) potter lived quietly on, the data of synthetic performance tests of various portals I can understand within the tolerances of SATA6 I have in normal copying Data on average 125-150 MB / s, enough to exploit GB-LAN (here also as in the encryption other factors reduce the performance).
Folded as RAID1 provides the hard drive good performance and high security for little money.
Soon a small additional review is still to come regarding the behavior in hardware RAID5 with 5 plates.

Conclusion:
Kaufemepfehlung.
Actually, 5 star, but through the crap to the tool I give one star deduction, which should not have been - not in a HDD, which is designed for continuous operation and therefore declared as a data grave. Users who are not familiar with the matter who, or find such information simply does not.

----------
Addendum:
The first delivered by Amazon HDD shows after 86 hours of operation now uncorrectable errors - but ausgelsenen with several tools on 4 different PC's (Chipset error are therefore excluded).
Seems to be a really interesting series - or I was unlucky (suppose that the first well have to work).
I'll wait and see how to make the other hard drives - the RAID5 I will for now not compile ...