Extreme Networks EPICenter Reference Manual page 275

Taking Graph Snapshots
When you snapshot a table, you cannot change to a graph from within the snapshot image window.
The HTML page persists in a snapshot image cache until the EPICenter server is restarted, or until the
image cache becomes full. When the image cache reaches its limit, older snapshot images will be
deleted as needed to make room for new snapshot images.
275
EPICenter Reference Guide