Hi,
The WLSDM and the WL-OPC have their own data-archive mechanism.
For the WLSDM, default data archive range is 90 days, and for the WL-OPC, default data archive range is 365 days.
You can find the settings below.
Kind regards.
WLSDM: Configuration > WLSDM System Settings > system.archive
WL-OPC: Administration > System Settings > Notification