Do I have to face any performance (or security?) issues if I move a groupwise8 system from an NSS volume to a traditional linux volume?

The groupwise8 documentation mention:
"2.3.6 Linux File System Support

For best GroupWise performance on Linux, the ext3 file system is recommended. If you are running OES Linux and need the feature-rich environment of the NSS file system, GroupWise is also supported there. The reiser3 file system is also supported."