read open error: there was not a device file name passed in to CDI (drive status is )

I have a Networker v. 8.1.1.5 Build 306 with a Quantum Scalar i80 connected for Backups.

I changed the tapes and tried to Inventory and Label the Tapes to be functional for new Backups.

9 tapes were put in the Scalar but only 4 were Labeled the other 5 are unlabeled.

After Inventory all the tapes, I've tried to mount one by one and do the Label of the Tape, but it gives me the error: "read open error: there was not a device file name passed in to CDI (drive status is )".

I've checked the Networker console, made the Inquire but can't see this drives.

I have also, connected to this networker a VTL Service from DD and a Dell MSL6000.

This is the Inquire output:

--------------------------------------------------------------------------

DEVICE          :VEND    :PROD            :REV   :SER NUM    :CAP(kb)

--------------------------------------------------------------------------

/dev/sda        :DELL    :PERC 6/i        :1.11  :           :           71041024

/dev/sdb        :DGC     :VRAID           :0430  :           :         104857600

/dev/sdc        :DGC     :VRAID           :0430  :           :         104857600

Occasionaly the Drive enters in Service Mode while is making the Inventory.

Anyone had this problem before ?

Any help will be welcomed.

Best regards,

FQ