Organize files/folders for backup to disk

Hi there, I have an iOmega NAS and have setup on backup server via iSCSI for backup storage. I have 2 DB servers and 2 VMWare hosts that I need to backup. The software is licensed for this. I am having a hard time finding a way to seperate the storage for the jobs. Right now the files are just going directly to the root of the drive and I dont have a clue what files are for waht backup etc... Is there a way to split it up into folders or even define the file name on the jobs to add the server name in front of the file name or...?

Any ideas would be aprretiated.

Thanks
Derrcik