We have three 6.2.2.0 TSM server instances on two zSeries Linux systems in two different locations. Each location has an instance for storing client backup files, and one location has a dedicated library manager instance. Each client file instance writes copy storage pools and database snapshots to a tape library in a third location. The library manager writes database snapshots to virtual volumes at the other location. Each instance writes recovery plans to an instance at the other location.
In the event of a disaster at one of the server locations, we plan to recreate the lost instance or instances on the surviving Linux system. I am attempting to create scripts and detailed instructions for this process. Version 6 DRM is turning out to be a considerable disappointment. As far as I can tell, IBM ripped out the parts used to create an empty Version 5 instance and didn't bother to replace them with corresponding Version 6 functionality, opting to dump the problem into the customers' laps. I have so far not found any detailed discussion of empty instance creation specific to 6.2, and and the only detailed discussion I have found for 6.1 is logically inconsistent. I am wondering if the process outlined below would work. Preparations: 1.Define all three instance users on both Linux systems, with matching numerical values for user and group. 2.Include stanzas for all three TSM instances in /opt/tivoli/tsm/client/api/bin64/dsm.sys on both Linux systems. 3.Have each Linux system back up its instance directories to a TSM server at the other location. Disaster recovery: 1.Restore the instance directory. 2.Replace the server options file, device configuration file, and volume history files with the corresponding files from the latest recovery plan. 3.Update the device configuration file, replacing all occurrences of the IP address of the destroyed Linux system with the IP address of the surviving system. 4.Run the database restore command from the recovery plan. 5.Update the IP address of the restored server in various TSM databases. If the lost location were the one with the library manager, the library manager would be the first instance recreated at the surviving location. Thomas Denier, Thomas Jefferson University Hospital
