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The Tivoli Storage Manager Backup and Restore windows provide an estimate function that estimates the amount of time required to process your files and directories. The estimated transfer is a rough calculation of the time it takes to transfer your data. This estimate is based on previous transfers of data between your workstation and the current Tivoli Storage Manager server. The actual transfer time could be longer or shorter than the estimate due to factors like network traffic, system load on your workstation, or system load on the server.
The Estimated Transfer Time is based on previous backup transfer rate, so you must run at least one backup operation first. The Estimated Transfer Time field reads N/A if no files are sent to or from the current Tivoli Storage Manager server. The estimate function also does not take into account whether or not files are excluded from backup. The assumption made by the estimation algorithm is that all the files selected will be sent to the server.
Note: During installation, Tivoli Storage Manager creates the dsm.ini file to record statistics from the backup-archive client estimate function. This file resides in the client directory.