Before the SDM r14.1, it was necessary to set the NtfsDisable8dot3NameCreation=0 by manual in order to start the SDM installer. The r14.1 common installer does not need to do that by manual. However, if the customer upgrade the SDM from r12.x to r14.1, the migration process failed on the environment that the NtfsDisable8dot3NameCreation is NOT 0, like 1.
The "SDM Migration failed with exitCode : 231" message will appear.
I think it is the requirement for SDM to migrate to r14.1. But in the future release, I think it is the best to remove the requirement for the migration installation also, not only fresh installation.