Theres no software that I know of today that is
capable of multi-pathing/load balancing a dual ported
tape drive (i.e 9840FC).

If you want clustering down to the tape drive today, this may
work..

[server A - passive] [server B - active]
                 |    |
           [switch]  [switch]
              \ \      / /
               \ 9840FC /
                 9840FC

Regards
Peter Marelas

-----Original Message-----
From: Axel Kunze [mailto:axel-kunze AT web DOT de]
Sent: Friday, 12 October 2001 2:46 AM
To: Gregg Yurchak
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Planning Netbackup in a VCS Cluster




Hmm, losing the second path ... so if the switch where I'll get my
first path blows away I have no chance to get NB back running without
changing the switch ...

Maybe I'm too influenced designing clusters with storage arrays ...

Regards an thanks

Axel Kunze


*********** REPLY SEPARATOR  ***********

On 11.10.2001 at 11:50 Gregg Yurchak wrote:

>To take it one step further, I'd zone out one of the paths using the
>portID.
>
>Thanks,
>Gregg Yurchak
>VERITAS Consultant
>Biloxi, MS
>gregg AT veritas DOT com
>Office: 1.228.822.9810
>Cell:    1.228.324.6939
>
>
>
>
>-----Original Message-----
>From: Xu Chen [mailto:xu.chen AT ptech DOT com]
>Sent: Thursday, October 11, 2001 7:38 AM
>To: Axel Kunze; veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE: [Veritas-bu] Planning Netbackup in a VCS Cluster
>
>
>You don't need SSO option (if it's a passive-active cluster).
>
>NBU will see two paths to drive, and only one will be used when doing drive
>configuration.
>
>That's my 0.2$ thoughts.
>
>Xu Chen
>
>
>-----Original Message-----
>From: veritas-bu-admin AT mailman.eng.auburn DOT edu
>[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Axel Kunze
>Sent: Thursday, October 11, 2001 10:01 AM
>To: veritas-bu AT mailman.eng.auburn DOT edu
>Subject: [Veritas-bu] Planning Netbackup in a VCS Cluster
>
>
>Hi dear list members !
>
>I'm about to plan, what I need for a Netbackup Server clustered with VCS
>1.3.
>First of all we'll be using STK 9840 because of their FCAL ability. STK
>says
>they're
>dualported, so I assume I can have two paths to a single drive connected to
>each
>cluster node via a san.
>How does Netbackup handle the two paths to a single drive ? Do I need the
>SSO option
>to handle this ?
>
>Any help ?
>
>Regards
>
>Axel Kunzet
>
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