daisy-chained 3590's

anybody using multiple 3590's on the same scsi controller in 3494's?
aix 4.2.1
atape 4.4.00
atldd.driver 4.0.1.0
rmt firmware A2FC
adsm server 3.1.2.15

I get errors trying to define a new 3590.

adsm> q drive

Library Name     Drive Name       Device Type     Device               ON LINE
------------     ------------     -----------     ----------------     
-------------------
MAGSTAR3494      DRIVE01          3590            /dev/rmt0            Yes
MAGSTAR3494      DRIVE01          3590            /dev/rmt0            Yes
MAGSTAR3494      DRIVE02          3590            /dev/rmt1            Yes


adsm> define drive magstar3494 drive03 device=/dev/rmt2 online=yes
ANR8420E DEFINE DRIVE: An I/O error occurred while accessing drive DRIVE03.
ANS8001I Return code 3.

lsdev -C -c tape
rmt0  Available 00-04-01-1,0 IBM 3590 Tape Drive and Medium Changer
rmt1  Available 00-16-01-0,0 IBM 3590 Tape Drive and Medium Changer
rmt2  Available 00-16-01-2,0 IBM 3590 Tape Drive and Medium Changer
lmcp0 Available              LAN/TTY Library Management Control Point

mtlib -l /dev/lmcp0 -D
  0, 00311570 003590B1A00
  1, 00293770 003590B1A01
  2, 00278590 003590B1A02




Richard Cowen
Systems Programmer
Fletcher Allen Health Care
Burlington, VT
802-847-8403