NVX is losing 4 TB USB-Disks while backup is running

[Dirk_TripleD]

Hello,

as described above, I got 2 brandnew WD MyBook USB 3.0 disks with 4 TB each.

I tried all, formating them with EXT 3, EXT 4, NTFS and so on. I disabled energy saving mode and updated firmware of the disks.

It only happens when I backup large files of about 1 TB (Veeam-Backups).

When I reboot they are still away. When I shut down the NAS and wake it up via WOL they are present then.

It is as ReadyNAS NVX Business Edition with firmware RAIDiator 4.2.25.

Need help... 😞

Kind regards,

Dirk TripleD