Size of the Data Folde grows since the Upate to Backup Exec 2014

Hello,

since we've installed Backup Exec 2014 the size of the Data Folder grows continously. In the Data folder I've found a log of folders(nearly 35.000) named like VM's with a timestamp. The most folders have only a few KB, but the folders from the Exchange Server have more than 300 MB.

Does anybody know where they come from and whether this folder can be deleted?

Thank you very much in advance,

Daniel