# Edge Panel Alarm History/Trend Retention **URL:** \ **Category:** Ignition\ **Created:** [February 14, 2019, 8:51pm UTC](https://forum.inductiveautomation.com/t/edge-panel-alarm-history-trend-retention/22591 "2019-02-14T20:51:54Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![cmason](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@cmason](https://forum.inductiveautomation.com/u/cmason)\ **Post date:** [February 14, 2019, 8:51pm UTC](https://forum.inductiveautomation.com/t/edge-panel-alarm-history-trend-retention/22591/1 "2019-02-14T20:51:54Z")
I realize that there is the limitations on the Igniton Edge Panels. I have a question around the Trends/Alarm History retention when it is being used purely as a standalone HMI not connected to any Ignition Gateway. To my understanding the limit is 7 days of buffering for Trends and Alarm History? Also if the Edge gateway is shutdown/loses power, when it starts up is the information for the last 7 days still there or is it volatile? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [February 14, 2019, 9:20pm UTC](https://forum.inductiveautomation.com/t/edge-panel-alarm-history-trend-retention/22591/2 "2019-02-14T21:20:25Z")
7 days of alarm journal history, and either 10 million records or 7 days of tag history data (whichever is reached first) is stored on-disk in (separate) SQLite database files.