Good question, but we aren't using copypool simultaneous write.
Best Regards, John D. Schneider Phone: 314-364-3150 Cell: 314-750-8721 Email: [EMAIL PROTECTED] -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Conway, Timothy Sent: Wednesday, September 10, 2008 10:48 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] How does VCB backups handle resource utilization? Copypool simultaneous write? -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Schneider, John Sent: Wednesday, September 10, 2008 9:35 AM To: ADSM-L@VM.MARIST.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: [EMAIL PROTECTED] This e-mail contains information which (a) may be PROPRIETARY IN NATURE OR OTHERWISE PROTECTED BY LAW FROM DISCLOSURE, and (b) is intended only for the use of the addressee(s) named above. If you are not the addressee, or the person responsible for delivering this to the addressee(s), you are notified that reading, copying or distributing this e-mail is prohibited. If you have received this e-mail in error, please contact the sender immediately. This e-mail contains information which (a) may be PROPRIETARY IN NATURE OR OTHERWISE PROTECTED BY LAW FROM DISCLOSURE, and (b) is intended only for the use of the addressee(s) named above. If you are not the addressee, or the person responsible for delivering this to the addressee(s), you are notified that reading, copying or distributing this e-mail is prohibited. If you have received this e-mail in error, please contact the sender immediately.