You can use System Manager to specify name mapping entries to map users from different platforms.
Name mapping conversion rules
An ONTAP system keeps a set of conversion rules for each SVM. Each rule consists of two pieces: a pattern and a replacement. Conversions start at the beginning of the appropriate list and perform a substitution based on the first matching rule. The pattern is a UNIX-style regular expression. The replacement is a string containing escape sequences representing subexpressions from the pattern, as in the UNIX sed program.
Name Mapping window
You can use the Name Mapping window to specify the name mapping entries to map users from different platforms.