Hi,
for IBM 3592 (TS1120) Tape Drives you don't need any DPF Key. You just need
to enable the alternate pathing support with "chdev -l rmt1 -a
alt_pathing=yes"
Then your drives rmt10 and rmt50 are connected somehow together and in TSM
you only configure one drive (either rmt10 or rmt50).
With DPF you will get Failover and Loadbalancing function. With the TSM
function SANdiscovery you will get failover only.
See also Implementing IBM Tape in UNIX Systems, SG24-6502-03
Redbook, published 18 October 2005,
Mit freundlichen Grüßen / Kind regards
Josef Weingand
Senior IT Specialist
Technical Sales Systems Storage
IBM Deutschland
Mobil +49 171 55 26 783 - Homeoffice Tel. +49 8845 757421
Fax +49 171 13 5526783
email: [EMAIL PROTECTED]
SMS/eMail: [EMAIL PROTECTED]
"Herrmann, Boris"
<[EMAIL PROTECTED]
RAG.DE> To
Sent by: "ADSM: ADSM-L@VM.MARIST.EDU
Dist Stor cc
Manager"
<[EMAIL PROTECTED] Subject
.EDU> [ADSM-L] AW: [ADSM-L] 3592 Path
Failover for Dual Ports
05.02.2007 09:14
Please respond to
"ADSM: Dist Stor
Manager"
<[EMAIL PROTECTED]
.EDU>
Hallo all,
and thanks for the feedback.
Unforunately we don't have the necessary key for that feature.
But there is another nice option to resolve this problem with TSM. IBM told
me to set the option "SANdiscovery" in the dsmserv.opt to "ON". After
setting this option to on, you can see every SAN Device (Q SAN) with it's
serialnumbers etc. (in your example we see that the drive /dev/rmt10 and
/dev/rmt50 have the same serialnumbers). Now if /dev/rmt10 is not
available, TSM detects that /dev/rmt50 has the same serialnumber and
automatically update the PATH to /dev/rmt50.
Mit freundlichen Grüßen / with kind regards,
______________________________________
Boris Herrmann
Produktion / Heterogene Systeme
ARAG IT GmbH
ARAG Platz 1, 40472 Düsseldorf
Tel: +49 (0)211 964-1137
Fax: +49 (0)211 964-1155
[EMAIL PROTECTED]
www.ARAG.de
Geschäftsführer: Ottmar Liebler, Hanno Petersen
Sitz und Registergericht: Düsseldorf, HRB 10934
USt-ID-Nr.: DE 119 356 473
-----Ursprüngliche Nachricht-----
Von: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] Im Auftrag von
PAC Brion Arnaud
Gesendet: Mittwoch, 31. Januar 2007 09:33
An: ADSM-L@VM.MARIST.EDU
Betreff: Re: [ADSM-L] 3592 Path Failover for Dual Ports
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
