Run task with a non-administrator user

Hello,

We are currently using Acronis Backup & Recovery 11 to backup our servers. This is done an administrator's account on a domain and works well.

Anyway for security reason (mainly on 2 servers which are domain controllers) I wish to run backup tasks with a non-privilieged ( = non Administrator group) user.

So I created a user included in those groups :

- Backup operator
- "servername" $ Acronis remote user

I can run backups but it hangs with this error :

Échec de la lecture de l'instantané.
Informations additionnelles :
--------------------
Code d'erreurs : 50266
Module : 16
LineInfo : 14181c22ef45ad85
Champs : $module : C:\Program Files (x86)\Acronis\BackupAndRecovery\DiskBundle.dll
Message : Échec de la lecture de l'instantané.
--------------------
Code d'erreurs : 65520
Module : 0
LineInfo : bd28fdbd64edb8bc
Champs : code : 2147942405
Message : Accès refusé
--------------------

Is there a way to have backups done without using a domain administrator's account?

Thank you.

Best regards,

Guillaume Urban
IT manager