Hi @jip31,
as you can read at https://docs.splunk.com/Documentation/Splunk/9.0.1/Report/Acceleratereports ,
When you accelerate a report, you must choose a Summary Range value such as 7 Days, 3 Months, or All Time. This range represents the approximate span of time that is always covered by the summary at any given moment, once it is built. When the summary is built and you run this report again, to get full acceleration benefits the report must have a time range that fits within this summary range. For more information, see the subtopic "How Summary Range works," below.
in other words, the Summary Range is the accelerated time period.
If you want to search a larger time, you'll use the Summary Ragen for its period and the normal Splunk search for the remaining.
Ciao.
Giuseppe
