Tivoli® Storage FlashCopy® Manager helps to protect and to manage environments by facilitating the backup, restore, and recovery of custom application and file system data.
When a Tivoli Storage FlashCopy Manager local backup operation begins, the first step initiates the reconciliation process. The copies of the snapshot that are valid for expiration, and local snapshots that have been deleted are reconciled.
From the Tivoli Storage Manager server database, the value of VSS data container VSSDC_xx is identified. The mapping to target storage volume is identified in the adsm.sys folder. The default location for this folder is the installation path used by the Tivoli Storage Manager backup-archive client.
After a successful reconciliation, the metadata that is stored on the Tivoli Storage Manager server is deleted, the target storage volume is reused for the new snapshot, and the TargetSetsState file is updated with the current mapping.
In the x:\adsm.sys\vss_staging directory, the LSM_REP_LOG_VOL_SNAP and .TsmFmDatabases subfolders are vital to operations correctly completing and Tivoli Storage FlashCopy Manager has no mechanism to rebuild them. Do not manually delete these folders.
As a best practice, regularly back up these folders. If the folders become damaged and unusable, restore the latest copy. When the TargetSetsState has a mapping entry, the reconciliation process can detect the inconsistency between TargetSetsState and metadata that is stored on the Tivoli Storage Manager server, and synchronize. For example, if there is an orphan VSSDC_xx value in the Tivoli Storage Manager server and the value does not exist in TargetSetsState, reconciliation deletes the orphan metadata from the Tivoli Storage Manager server.