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IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive ...

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Table 35. Client comm<strong>and</strong> line in<strong>for</strong>mational messages (continued)In<strong>for</strong>mational messageMeaningTotal number of objects deleted: This is a count of the objects deleted from the client workstation afterbeing successfully archived on the server. The count is zero <strong>for</strong> allbackup comm<strong>and</strong>s.Total number of objects expired: See the section about full <strong>and</strong> partial incremental backup <strong>for</strong> morein<strong>for</strong>mation.Total number of objects failed: Objects can fail <strong>for</strong> several reasons. Check the dsmerror.log <strong>for</strong> details.Data transfer time:The total time to transfer data across the network. Transfer statisticsmight not match the file statistics if the operation was retried due to acommunications failure or session loss. The transfer statistics display thebytes attempted to be transferred across all comm<strong>and</strong> attempts.Network data transfer rate:The average rate at which the network transfers data between the client<strong>and</strong> the server. This is calculated by dividing the total number of bytestransferred by the time to transfer the data over the network. The time ittakes to process objects is not included in the network transfer rate.There<strong>for</strong>e, the network transfer rate is higher than the aggregate transferrate.Aggregate data transfer rate:The average rate at which <strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> <strong>and</strong> the networktransfer data between the client <strong>and</strong> 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 <strong>Tivoli</strong> <strong>Storage</strong><strong>Manager</strong> processing <strong>and</strong> network time are included in the aggregatetransfer rate. There<strong>for</strong>e, the aggregate transfer rate is lower than thenetwork transfer rate.Objects compressed by:Elapsed processing time:Total number of bytes transferred:LanFree bytes transferred: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, <strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> attempts toimprove per<strong>for</strong>mance <strong>and</strong> load balancing by using multiple sessionswhen it backs up a file space 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 10K<strong>and</strong> the file is 100K, then Objects compressed by: == (1 - (10240/102400))x 100 == 90%.The active processing time to complete a comm<strong>and</strong>. This is calculated bysubtracting the starting time of a comm<strong>and</strong> process from the ending timeof the completed comm<strong>and</strong> 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.<strong>Backup</strong> (<strong>UNIX</strong> <strong>and</strong> <strong>Linux</strong>): Additional considerationsThis section includes topics related to incremental <strong>and</strong> selective backups. You donot need to underst<strong>and</strong> this in<strong>for</strong>mation to use <strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> <strong>for</strong> basicwork.Chapter 4. Backing up your data 157

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