The files inside the Event Queue folder are being processed, but not as fast as they should, resulting in the available hard disk space filling up.
The IOPs are not the ones that Symantec recommends, and the hard disk is not fast enough to deal with the writing and reading process.
ITMS 8.x
The disk where the Event Queue folder is stored does not have the minimum requirements for disk space and/or IOPs.
It may be helpful to review Physical and virtual hardware recommendations for Notification Server and understand the recommended disk IOPS.
Event Queue path can be changed via the following registry:
Changes will be applied after all services are restarted.
The recommended way to change path values is as follows:
NOTE: Do not redirect the EventQueues to the NSCap directory structure, as it may stop NSEs from being processed.