Today my Synology can't login in DSM!!! First, I named it as synology_A. There is another Synology it works well,named it as synology_B. synology_A info: Product:DS3617xs Version:DSM 6.1.5-15254 Update 1 bootloader:DS3617xs 6.1 Jun's Mod V1.02b Then I telnet in Synology telnet  x.x.x.x  sudo -i #login in as root, password is same as admin. Then I compare synology_A and synology_B's Process.I find  synology_A has many [defunct] process. root@synology_A:~# ps -ef