Was just looking at picking up some factory recertified drives through either SPD or GoHardDrive and was looking at the data sheets of the various drives when I noticed that the Seagate Factory Recertified Drive's data sheet had terrible metrics when compared to their newer drives.
Here's a comparison between the Seagate Exos X16, Exos X22, and Factory Recertified drives...
| Type | X16 | X22 | Factory Recertified |
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| Limited Warranty | 5 years | 5 years | 6 months |
| Nonrecoverable Read Errors per Bits Read | 1 sector per 10E15 | 1 sector per 10E15 | 1 sector per 10E14 |
| Power-On Hours per Year (24×7) | 8760 | 8760 | 2400 |
| Max. Sustained Transfer Rate OD (MB/s,MiB/s) | 261/249 | 285/272 | 190/181 |
| Random Read/Write 4K QD16 WCD (IOPS) | 170/440 | 168/550 | 170/320 |
| Idle A (W) Average | 5.0W | 5.5W | 7.2W |
| Max Operating, Random Read 4K/16Q (W) | 10.0, 6.3 | 9.4, 6.4 | 10.5W |
| Temperature, Operating (°C) - drive reported | 5°C – 60°C | 5°C – 60°C | 10°C – 60°C |
| Shock, Operating 2ms (Read/Write) (Gs) | 50 | 40 | 30 |
| Datasheet | X16 | X22 | Exos Recertified |
It seems like Seagate's tolerances are loosened up a lot by recertifying their drives but their sustained transfer speeds really take a wallop and overall give me pause for concern. For anyone who's bought their Factory Recertified Drives (mostly through GoHardDrive) have you noticed lower overall read speeds on your drives compared to what's offered in the other data sheets? Comparatively, SPD tends to refurbish older X* stock and I've never had issues getting the faster speeds shown in their actual datasheets.
I'm only looking at GoHardDrive as they offer a 5 year warranty on their recertified drives, but a loss of 100MB/s across the drive range will really impact parity calculations. As an example, the difference in speed on a parity calculation of a 24TB drive running at 260MB/s is 25h40m, while at 190MB/s 35h6m which is huge. Thoughts?