removing physically dettached devices for backing up

[ali-fa]

hi
i had a vm with 2 attached harddrive. i physically removed these harddrives from server before detaching them from my vm.
now when i want to back up my vm, proxmox cant find these 2 harddrive stop backing up with error:

could not open 'dev/disk/by-id/****' no such file or directory.

how can i remove these hardrives from my vm and backup?

 

[dcsapak]

add 'backup=0' to the drives

like this
----
scsi0: /dev/disk/by....,size=50G,backup=0
----