We recently moved from SAP Business one 8.81 to 9.1 moving from a windows 2008 server/SQL to a Windows 2012/SQL. Both the old and new server are virtual in the same cluster on raid 5 setup. We are seeing a performance decrease were most queues are 3-4 times longer. We've added a memory and cores to the VM but the improvements are minimal. 30 GB memory to the server and at first only 8 GB was assigned to SQL but we increased it to 24 GB, but we are averaging 17 being used. Anti-virus is not an issue.
I know it is recommended that an SQL server be on a physical server with raid one, but our old one was functional before hand. Would the upgraded system require different disk configuration.