KACE SMA backup file size is very large
KACE SMA backup file size is very large, how to reduce the backup file size and what things affect the backup file size
Please review this article: https://support.quest.com/kb/313692
In the backup all stuff you have in your appliance is saved.
There are your managed installs, your service desk tickets etc which can consume much space, so there is no general advise.
You can check what you may (or may not) need anymore and remove it from your appliance.
Patches are not backed up, since the need of patches changes too often, so they are downloaded on demand.