Virtualizing TAPE on dual VIOS

We have connected IBM protectier (IBM 3500) to a dual VIOS server in order to virtualize them to a TSM server running on an old Power system 550.
After the connection and FC zonning between protectier and VIOS, we can see the devices:

padmin@vios1 $ lsdev -type tape
name             status      description
rmt0             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt1             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt2             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt3             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt4             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt5             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt6             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt7             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt8             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt9             Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt10            Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt11            Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt12            Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt13            Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt14            Available   IBM 3580 Ultrium Tape Drive (FCP)
rmt15            Available   IBM 3580 Ultrium Tape Drive (FCP)
smc0             Available   IBM 3584 Library Medium Changer (FCP)

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So, we're trying to map, in this case, rmt0 to the AIX 6.1 (TSM server), but we're having this error:

padmin@vios1 $ mkvdev -vdev rmt0 -vadapter vhost2 -dev tsm3_rmt0
"rmt0" is not a valid backing device.

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Any idea why?
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woolmilkporcConnect With a Mentor Commented:
If I remember well only SAS (Serial Attached SCSI) tapes can be virtualized, not FC tapes.
http://www-01.ibm.com/support/docview.wss?uid=isg3T1011269
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