Hello team,

I am a system and network integrator in the defense sector.
I have deployed the XCP-NG hypervisor for our tools (moving from ESXI 5.1 to XCP-NG 8.2 ). I have been working in IT for several years now and have previously used XenServer 6.5, so I'm not completely lost. As for virtualization technologies, I am agnostic (Proxmox, VMware, Hyper-V, etc.).
Looking forward to exchanging ideas with you!

PS: Is it possible to have a sub-forum for French speakers?

Hello team,

Are there any limitations or different behaviors when connecting an external hard drive of 4 TB or more via USB to the XCP-NG host (using a disk dock, for example)?

In my current usage scenario (at home, in this case), the goal is to connect the external hard drive to a virtual machine that will also serve as a NAS.

The disk is detected correctly at the host level with the 'lsblk' command, as well as with Xen commands and in the Xen Orchestra VUSB section. However, even when attached to the VM (running Debian 12), no device is recognized.

Is there any official documentation regarding VUSB, its associated limitations, and its usage context? I've come across various information about the USB part, but it remains somewhat unclear.
(VUSB, USB Passthrough etc...)

I will run the test again tonight with screenshots/logs to provide clearer information.

Il semble que le problème soit lié à la compatibilité de l'USB 3.0 et/ou à la vitesse du périphérique.
Quand le périphérique est branché directement à l'hôte, cela ne fonctionne pas :

En revanche, lorsqu'on branche le périphérique sur un hub USB 3.0 (KEXIN HUB USB Multi Ports USB 3.0, bien que j'aie quelques doutes sur sa gestion correcte de l'USB 3.0...), lui-même relié à l'hôte, cela fonctionne correctement :

Donc, une fois branché via le hub, le disque est bien détecté par la machine virtuelle.
Pour ma part, je vais laisser le passthrough directement sur ma VM "NAS", car ça fonctionne bien ainsi. Je ne pense pas qu'il soit pertinent de corriger ce problème, étant donné que le passthrough fonctionne correctement.