We just bought a CS407E, we wanted to use it for backing up virtual servers from an ESX environment(Vranger). But after our backup solution has been running for between 10-20 minutes, the server looses connection to the NAS server!? I tried to have a ping running meanwhile doing the backup, and when the connection is reset I loose 5-10 packets from my ping, before it starts responding again.
Then I tried to just do a normal file copy, from a server in the same location. So i copied about 8gigs on to it. After about 3gigs, the connection was reset again!
I've also tried to enable jumbo frames, but without luck.
I running with the latest firmware (DSM 2.0-0731) on, I've not enabled anything else but filesharing on it. The 4 1tb disks is supported by Synology.