Parameters set through Windows registryThe following are the parameters of Acronis Backup & Recovery 10 Storage Node that can be set only by editing the registry. Parameter related to deduplication CompactingTriggerThreshold Description: Specifies the percentage of used items in the data stores below which compacting occurs. Possible values: Any integer number between 0 and 100 Default value: 80 Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\ASN\Configuration\StorageNode\CompactingTriggerThreshold As backups are deleted from a deduplicating vault, its deduplication data stores may contain unused items: files or disk blocks that are no longer referred to from any backup. The storage node processes both data stores in turn to delete the unused items. This operation is called compacting. Since compacting is a resource-consuming operation, it should occur only when the number of unused items is significant. The CompactingTriggerThreshold parameter enables you to set up a balance between the extra space required to store unused items and the compacting frequency. The larger the value of this parameter, the fewer unused items are allowed in the data stores, but compacting will likely be more frequent. This parameter applies separately to disk-level and file-level backups. So, compacting may be performed for one data store and skipped for the other. Parameters related to vault databases The following two parameters determine paths to Acronis Backup & Recovery 10 Storage Node’s internal databases, which contain information about managed vaults. The database that is located in the folder specified by the DatabasePath parameter is typically small. However, the database that is located in the folder specified by the TapeDatabasePath parameter (called the tape database), may be large if the tape library contains thousands of archives. In this case, you may want to store the tape database on a different volume. Important: We do not recommend modifying these parameters. If you do need to modify either of them, you should do this before creating any corresponding (tape or non-tape) managed vaults. Otherwise, the storage node will lose access to those vaults until you re-attach them, and re-attaching a vault—especially a deduplicating one—may take a considerable amount of time. DatabasePath Description: Specifies the folder where Acronis Backup & Recovery 10 Storage Node stores its non-tape vaults database. This database contains a list of vaults that are managed by the storage node, other than tape vaults (see the next parameter). Its typical size does not exceed a few kilobytes. Possible values: Any string 0 to 32765 characters long Default value: C:\Program Files\Acronis\StorageNode Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\ASN\Configuration\StorageNode\DatabasePath TapesDatabasePath Description: Specifies the folder where Acronis Backup & Recovery 10 Storage Node stores its tape vaults database. This database contains a list of tape vaults that are managed by the storage node. Its size depends on the number of archives stored in the tape libraries, and approximately equals 10 MB per hundred archives. Possible values: Any string 0 to 32765 characters long Default value: C:\Documents and Settings\All Users\Application Data\Acronis\BackupAndRecovery\TapeLocation\ Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\BackupAndRecovery\TapeLocation\TapesDatabasePath |