Is a mixed platform configuration like SOM on a Linux Box and SOC(s) on a Windows box supported with ArcGIS Server?
No, neither can the reverse scenario be supported. The reason for this is that file paths cannot be properly reconciled in communication between a Linux SOM and a Windows SOC. For example, SOC needs to know the absolute path for the server’s log file. The Linux SOM cannot communicate a Linux pathname to a Windows SOC, nor the reverse.