In a hybrid environment had an Exchange server on-prem (2016) that was not being backed up by normal means. In fact, now that I’m writing this, I’m pretty sure it’s not being backed up at all; something I’ll look into eventually.
Anyway, this Exchange server was filling up its drive space for logs. So I “faked” a backup and truncated the logs without any dismounting of the storage or taking the system offline.
- Run CMD as an administrator
add volume e:(this is assuming your Exchange DB and Logs directories are on the E: drive)