I'm trying to setup a Storage Space with 3 x 4TB Seagate in a QNAP TR-004 case but performances are unacceptable.
QNAP configured in "Individual" mode so all 3 drives seen as independent ones: tested to write on each of them and each of them reported 170MB/s
QNAP configured as hardware RAID5: write speed 225MB/s
Single drive config + Storage Spaces with Parity, used entire space (7,2TB): very variable, from 40MB/s to 0MB/s, medium write speed 10MB/s
I enabled the setting optimize USB for performances end enabled write cache on all three drives and also on the StorageSpace volume it is enabled.
QNAP is connected with USB3 and I used the same connection method for all tests obviously.
Windows version is 20H2
Thanks for any help.