Re: Tape sharing - how does TSM handle duplicate device file name s

You just need to know which drive equals which drive.  When you define the
drives and/or paths make sure that if drive 1 is /dev/rmt/0stc on the master
that drive 1 on the slave is /dev/rmt/8stc.  If they don't match you will
have problems.
Becky

-----Original Message-----
From: StorageGroupAdmin StorageGroupAdmin
[mailto:StorageGroupAdmin AT SYDNEYWATER.COM DOT AU]
Sent: Monday, March 17, 2003 7:15 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Tape sharing - how does TSM handle duplicate device file names


-----------------------------------------------------------
This email is to be read subject to the disclaimer below.
-----------------------------------------------------------

We currently have two TSM environments at separate sites.

Each environment has a SAN connected 3494/3590  (via a MacData Switch and
two SDG's). Both TSM environments are isolated within separate zones. This
segregation means that both environments have the same drive and path
configurations defined to TSM (eg DRV0 = /dev/rmt/0stc)

We would now like to invoke library sharing so to automagically write our
copy pools and database backups offsite.

When I combine the two zones,  both server will discover another 8 3590
drives and will build the special device files.   Now I would have the
situation where the physical drive on the 'managing server' will know the OS
as /dev/rmt/0stc and the 'client' it will be /dev/rmt/8stc  etc etc.


Will this cause an issue with the sharing functionality. In other words,
does the  special file( ie path definition in TSM)  to physical hardware
association need to be in sync. If it does not matter, how does the managing
server tell the client server where the media it requested has been mounted.


Peter Griffin
Sydney Water









-----------------------------------------------------------
Voluntary water restrictions now apply to residents in
Sydney, Blue Mountains and the Illawarra.
No sprinklers or watering systems between 8am and 8pm.
No hosing of paths, buildings or hard surfaces.
For more information visit www.sydneywater.com.au
-----------------------------------------------------------
NOTICE - This communication contains information which is
confidential and the copyright of Sydney Water or a third party.
If you are not the intended recipient of this communication
please delete and destroy all copies and inform the sender
immediately. If you are the intended recipient of this
communication you should not copy, disclose or distribute this
communication without the authority of Sydney Water.
Any views expressed in this communication are those of the
individual sender, except where the sender specifically states
them to be the views of Sydney Water.
Except as required at law, Sydney Water does not represent,
warrant and/or guarantee the integrity of this communication
has been maintained nor that the communication is free of
errors, virus, interception or interference. The attached files
are provided and may only be used on the basis that the user
assumes all responsibility for any loss, damage or consequence
resulting directly or indirectly from the use of the attached files,
whether caused by the negligence of the sender or not.
Sydney Water is not responsible for any changes made to a
document other than those made by Sydney Water or for the
effect of any changes (not made by Sydney Water) on a
document's meaning.
-----------------------------------------------------------