Hi, sorry to reply after such long time, the forum rules allows newbies to make 2nd post after 24h.
@Gareth Halfacree thx for tip, there was no DRDY event in dmesg after running the test.
I've also tried to move /dev/sdb from SATA 2nd position to SATA 3rd possition. No effect.
@gprovost yes I'ved added the line, and this is how the ambianEnv.txt looks like at /boot now
The test are still being interrupted.
```
verbosity=1
bootlogo=false overlay_prefix=rockchip
rootdev=UUID=e4e3bcd6-3f03-4362-bbe0-f1654138c5d8
rootfstype=ext4
extraargs=libata.force=noncq
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u
```
usbstoragequirks? how did that get there does that mean the drive atatched them selves as UAS and could make the test fail?
I've never formatted and used the drives, I wanted to have successful longtest before using them daily.
I will do some more testing and troubleshooting. I really hope the SATA Harness cable is not damaged. Will post more.
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Fun, reading threads like these https://community.synology.com/enu/forum/1/post/123516 makes me think the problem is very common for some drives.