Installation and User's Guide

Table 25. Client command line informational messages (continued)Informational messageMeaningAggregate data transfer rate:The average rate at which Tivoli Storage Manager and the networktransfer data between the client and the server. This is calculated bydividing the total number of bytes transferred by the time that elapsesfrom the beginning to the end of the process. Both Tivoli StorageManager processing and network time are included in the aggregatetransfer rate. Therefore, the aggregate transfer rate is lower than thenetwork transfer rate.Objects compressed by:Deduplication reduction:Total data reduction ratio:Subfile objects reduced by:Elapsed processing time:Total number of bytes transferred:LanFree bytes transferred:Total number of bytes inspected:Total objects deduplicated:Note: On occasion, the aggregate data transfer rate might be higher thanthe network data transfer rate. This is because the backup-archive clientcan have multiple simultaneous sessions with the backup server. If youset the resourceutilization option, Tivoli Storage Manager attempts toimprove performance and load balancing by using multiple sessionswhen it backs up a volume or other set of files. When multiple sessionsare open during backup, the data transfer time represents the sum of thetimes reported by all sessions. In this case, aggregate data transfer time isincorrectly reported as higher. However, when running with a singlesession, the aggregate data transfer rate should always be reported aslower than the network data transfer rate.Specifies the percentage of data sent over the network divided by theoriginal size of the file on disk. For example, if the net data-bytes are 10Kand the file is 100K, then Objects compressed by: == (1 - (10240/102400))x 100 == 90%.Specifies the size of the duplicate extents that were found, divided by theinitial file or data size. For example, if the initial object size is 100 MB,after deduplication it is 25 MB. The reduction would be: (1 - 25/100) *100 = 75%.Adds incremental and compression effects. For example, if the bytesinspected are 100 MB and the bytes sent are 10 MB, the reduction wouldbe: (1 - 10/100) * 100 = 90%Expresses the savings achieved by adaptive subfile backup as apercentage of actual bytes sent versus actual file sizes. For example, ifthe actual sizes of the files backed us is 100 MB, but with adaptivesubfile backup, only 25 MB were sent, then the reduction would be: (1 -(25 MB/100 MB)) x 100 == 75%.Note: The calculation considers all files that were processed, not onlythose files that were processed by adaptive subfile backup. Thecalculation does not include the effect of compression.The active processing time to complete a command. This is calculated bysubtracting the starting time of a command process from the ending timeof the completed command process.As indicated.The total number of data bytes transferred during a lan-free operation. Ifthe enablelanfree option is set to no, this line will not appear.A sum of sizes of files selected for the operation.The number of files that have been deduplicated.Backup (Windows): Additional considerationsThis section discusses additional information to consider when backing up data.154 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: Installation and User's Guide