Is there a command-line way to back up my Exchange databases without stopping the services, like the GUI can? Or, for that matter, is there any automated method of doing online backups without buying third-party software?
Certainly you can, it’s just a matter of knowing the proper command-line syntax. What you want is this command line:
NTBACKUP backup DS \MyServer IS \MyServer /v /t normal
Note that this will overwrite anything on the tape before it. If you want to append to the tape you’ll need to add the /a switch.