Either increase the maximum allowed mountpoints or put a line in the
client DSM.OPT along the lines of
resourceutilization 5 (5 works well with 2 mountpoints allowed)

See Ya'
Howard


> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Schneider, John
> Sent: Wednesday, September 10, 2008 10:35 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] How does VCB backups handle resource utilization?
> 
> Greetings,
>     We are running TSM 5.4.3.0 server on AIX 5.3ML5.  The Lan-free VCB
> proxy is running TSM client 5.5.0.6.
>     We are getting an unexpected result with our VMWare Consolidated
> Backups.  We are just starting to run these in volume, and we are
> getting frequent messages:
> 
> 09/10/08 00:02:06     ANR0539W Transaction failed for session 4448 for
> node
>                        EPCEMI11. This node has exceeded its maximum
> number of
>                        mount points. (SESSION: 4448)
> 
> 09/10/08 00:02:06     ANR0539W Transaction failed for session 4449 for
> node
>                        EPCSTL11. This node has exceeded its maximum
> number of
>                        mount points. (SESSION: 4449)
> 
> 09/10/08 00:02:07     ANR0539W Transaction failed for session 4439 for
> node
>                        EPCSGF01RO. This node has exceeded its maximum
> number of
>                        mount points. (SESSION: 4439)
> 
> 09/10/08 00:02:07     ANR0539W Transaction failed for session 4444 for
> node
>                        EPCSGF01RO. This node has exceeded its maximum
> number of
>                        mount points. (SESSION: 4444)
> 
> 
> The destination storage pool is a virtual tape library, which is why
> mount points are involved.
> 
> In the Lan-free proxy server running VCB, the Resourceutilization is
> set
> to 4, and the maximum mount points is 8.  On the proxy clients
> themselves, I understand they inherit the Resourceutilization of the
> proxy server, so they would be 4 also.  Their maximum mount points is
> set to 2.  When Resourceutilization is 4, aren't the maximum mount
> points of 2 enough?   According to the Performance Tuning Guide,
> Resourceutilization of 4 should not allow more than one mounted tape.
> 
> We aren't getting the error for all clients, just a fraction of them.
> So maybe it is only happening for larger clients where the
> Resourceutilization algorithm to mount another tape kicks in?   We
> could
> always just jack the maximum mount points for the clients up and up
> until the problem goes away, but I don't understand why the client is
> trying to mount more than 2 tapes with Resourceutilization set to 4.
> 
> 
> Best Regards,
> 
> John D. Schneider
> Lead Systems Administrator - Storage
> Sisters of Mercy Health Systems
> 3637 South Geyer Road
> St. Louis, MO  63127
> Phone: 314-364-3150
> Cell: 314-750-8721
> Email:  John.Schneider AT Mercy DOT net
> 
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