Thanks for your answer. I checked the version of SnapDrive and on both system its 6.3, the service is also running...
If i create today a snapshot of drive c: and mount it on the same server as an other drive, so it mounts also only the Reserved Partition.
If I have a look on the Windows Disk Manager I'll see the complete LUN (Reserved Partition and "normal" Partition)... but it mounts only Reserved Partition?!
What is going wrong? (its possible for me to give manualy a drive letter to the normal partition, it will work so... buts no solution for me)
btw: 1. mount the snapshot on local system: works right, 2. if i try to mount the snapshot on the other system i get the reserved partition, 3. back on the local system, i get the reserved partition too!