Hi Boris,

Datapath failover is possible, on condition having bought the feature
with your 3584 library.

First of all, check if you got the necessary key to enable the feature
(should be written on a sticker on the inside of rear side of your
library)
 
Then, to enable datapath failover, in AIX issue  : dpf_keys -a
key_number

To enable datapath failover on a drive : chdev -l rmt1 -a
alt_pathing=yes

To enable control path failover on a smc device : chdev -l smc1 -a
alt_pathing=yes

to enable on all drives in one shot : /usr/lpp/Atape/instAtape -a

This is described in the IBM Ultrium device drivers Installation and
user's guide (GA32-0430-0.3) 

Hope this helped ...

Cheers.
 

Arnaud 

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-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of
Herrmann, Boris
Sent: Wednesday, 31 January, 2007 08:38
To: ADSM-L@VM.MARIST.EDU
Subject: 3592 Path Failover for Dual Ports

Hi everyone,
 
we have a complete new TSM evironment:
 
-AIX 5.3
-TSM 5.3.4
-Library 3584
-8 x 3592 Tape Drives with Dual Port (recommendend from our Sales
Assistant to handle Failovers of Cables, Ports, ...) -Atape Driver
10.3.5.0
 
I'm not a SAN specialist, so I hope I'll take the correct words to
express the problem/request.
Our Unix colleagues have installed and configured AIX and Atape. Every
Drive was connected with both Ports to two different "Fabrics". So each
Drive is seen in AIX two times with different names. For example:
 
Port0 of the Drive => /dev/rmt10
Port1 of the Drive => /dev/rmt50
 
Today in TSM I've configured all Drives on Port 0 (/dev/rmt10 -
/dev/rmt17). Is there a way that TSM or AIX can automatically handle a
Path Failover for Ports? My AIX colleagues told me, that under AIX is no
way to use the same device (for example /dev/rmt10) in a Path Failover
for Ports as /dev/rmt10. I than must use /dev/rmt50). In TSM I don't
know any mechanism to automatically handle that problem. I missed
something in the TSM PATH definition like "If /dev/rmt10 is not
available so use automatically /dev/rmt50). Any ideas.   
 
Thanks,
Boris

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