To diagnose excessive backup durations:
View the Job Duration bar chart, looking for excessive duration times.
See Job Summary Report .
In the Job Summary Report, click on the Duration column header to sort the data by Duration. Now you'll see excessive client usage at the top of the list. You might also sort by MBytes/Sec to identify throughput issues.
In the Job Summary Report, click on the of a suspect job to display the details.
See Job Details Report .
By using a combination of reports, you can figure out if some jobs held up others, if there are server problems that require your attention, or if consecutive errors are symptomatic of storage device failure or media degradation.