Networker

[Networker] 7.0 and ADIC Scalar 1000 with 2 Crossroads FCR250 and DLT8000's and Brocade SAN

2004-11-10 01:32:19
Subject: [Networker] 7.0 and ADIC Scalar 1000 with 2 Crossroads FCR250 and DLT8000's and Brocade SAN
From: "Ballinger, John M" <john.ballinger AT PNL DOT GOV>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Tue, 9 Nov 2004 22:31:18 -0800
We have a SAN (Dual fabric with Brocade 12000's,  3850's,  and 3800's)
NetWorker Server is Sun Ultra60 with Emulex LP8000 HBA.
Tape library is an ADIC Scalar 1000 with 7 DLT8000 tape-drives and 2 FCR250 
FibreChannelRouters(Crossroads) each with 1 FC connection and 2 SCSI busses 
behind.
        FCR#1
                Bus-0   Tape Library Robotics only item on the bus
                Bus-1   2 DLT8000 Tape drives
        FCR#2
                Bus-0   2 DLT8000 Tape Drives
                Bus-1   3 DLT8000 Tape Drives

The symptom we see is ultimately that a drive will not "unload"
        Nov  8 21:18:54 nw3 unix: NOTICE: lpfc1:039:Cannot issue FCP command  
Data: 0 0 0 0
        Nov  8 21:18:55 nw3 unix: NOTICE: lus_intr(5.0.0): transport failure 
(tran_err)

And yet running the mt command (mt -f /dev/rmt/2cbn offline) seems to work 
about every time.
Why does mt work but NetWorker not work ?

thanks in advance for any advice - John

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