Hi,
thank you for answering. The backup exec media server is also my vcb proxy. I observed one backup explicitly. The transfer, I think the snapshot, from the SAN to the media server/VCB (to harddisk) takes about 13 minutes. The size of the VM is 15 GB. Then the job is running. It starts with 92 MB/min and from step to step it is going faster. But no more than 600 MB/min. At the end I got an average between 380 MB/min and 480 MB/min. It is bad.