Home > Storage > PowerMax and VMAX > Storage Admin > Dell PowerMax and VMAX: Non-Disruptive and Minimally Disruptive Migration Best Practices and Operational Guide > Appendix E: VMware—VM Clone or Storage vMotion with NDM
For NDM between 5977 and 5978, Metro-based NDM a slight delay in processing VAAI instructions, namely xCopy, during the copy and sync stages. This is a known code delay will not affect normal NDM operations.