You will want to install your multipathing agents. This will ke
Hello,
You will want to install your multipathing agents. This will keep track of the
active path ( some will even allow the two paths to be used simultaneously )
and only present a single device instance to the OS, you can then point
Networker at this device instance, and it should only see 1 instance of each
drive.
Your mileage may vary based on the revision of networker you have implemented,
older revisions will want to use their own device drivers to address the drives
directly which will interfere with the multipathing agents.
Rudolfo
________________________________
From: Manel Rodero <manel AT FIB.UPC DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Sent: Mon, October 26, 2009 4:04:49 AM
Subject: [Networker] Multipath to our new Scalar i500 Library
Hello,
We've recently purchased an Scalar i500 library from Quantum (including the I/O
Blade module too).
Our library has 2 LTO-4 FC drives connected to our backup server through the
I/O blade. Our backup server has 2 x HBA QLE2460 (1 port each one) so we can
connect the 2 host output of the I/O blade to the 2 ports on the server.
But, as expected, under Windows (we're using Windows Server 2008) we see 4
drives (instead of 2) and 2 libraries (instead of 1) as them are presented by
two paths.
As I'm very new to all the SAN concepts, zones, failover, etc. I would like to
ask for some tips about how to set this environment for having dynamic
multipath for every drive and the library.
If I change some settings in the library I finally got it presenting to the
host only 2 drives + 1 library (something related to poin-to-point and failover
ports). But, if I configure Legato using these settings, when we disconnect one
FC and the library presents the drives using another path, Legato see the
drives with another name (i.e. initially \\.\Tape0 and \\.\Tape1 and after the
change as \\.\Tape2 and \\.\Tape3).
So I suppose I need to use aliases, isn't it? Or must I install multipath
software in Windows Server 2008? I've installed the optional feature but I
don't know how to continue with this setup.
If someone can give me some tips/info about what to read or look for, I'll be
very grateful.
Thank you very much!
--
Manel Rodero Blánquez
o o o IT Systems Manager
o o o Laboratori de Càlcul
o o o Facultat d'Informàtica de Barcelona
U P C Universitat Politècnica de Catalunya - Barcelona Tech
E-mail : manel AT fib.upc DOT edu
Tel. : +34 93 401 0847
Web : http://www.fib.upc.edu/
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