On a ESX+Windows server, I help administrate, there is an accounting program using binary file storage, rather than a SQL-db with well-tested ACID properties. The binary files often have data corruption when multiple users use the system. The provider of the software doesn't have any solution (Mamut Stellar Business), and tells that the program supports multi-users just fine.
The support employee told that it is maybe our VMWare-setup that causes the problem. Is there some settings in VMWare I can look into for solving this? I have already looked at Windows settings for oppertunistic locking etc.