Check the IBM Tape Device Drivers Installation and User's Guide and read
about Control Path Failover and Data Path Failover. Or have you "SAN guy"
re-zone so that the tape drives are split across the 2 HBA's. Put 2 LTO4's
per HBA. Spread the load. The device driver is a failover driver, not load
balancing. There might be a cost associated with activating the failover
support.

Bill Boyer
"If at first you don't succeed, try management." - ??

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Reddy, Mahender
Sent: Tuesday, July 29, 2008 12:59 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Weird duplicate device in Win2003 install

Hi,

You will get multipath driver with storage manager client

Regards,
MAHENDER.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Nicholas Rodolfich
Sent: Wednesday, July 23, 2008 2:23 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Weird duplicate device in Win2003 install

Hello All!

Thanks for your help!!

I am an old UNIX guy doing a Windows 2003 TSM 5.5.1 install.

I have an x3650 system with a TS3310 library (4 x LTO4) and a DS4700
storage array.

When I install the device driver for the library and boot the system, it
comes back with 2 medium changers and 8 drives in the device manager rather
than the 1 medium changer and 4 drives I really have. My SAN guy seems to
think that this is OK but I have never seen it this way in UNIX land. Could
it be that the zoning on the switch allows multiple paths to be seen by the
system and therefore it is trying to identify the same drive twice.  Should
I leave it this way. If not what is the solution?=