A large number of the servers have FC attached RDM's, there is a total of around 100 volumes in production they are being mirrored to DR, we are fine if we need to do a full dr test but ans the SRM dr test creates flexvols we cannot do a full dr test.
Having this fixed limit on the number of volumes seems a little mean especially when it takes flexvols into consideration in the count of volumes.
After doing some reading it seems that up to 500 is availiable on other models (we have 3140's in Propd) so it is possible to have more volumes, there must be a way to override this limit whist doing a test.