When you have a large number of trustees and folders at the directory level, mapping the home directory fails with an error.
To solve the issue, increase theNovell Storage Services (NSS) ID cache size to set the maximum number of entries for the NSS GUID to ID and ID to GUID cache.
For example:
nsscon nss /IDCacheSize=256000
Default: 16384
Range: 16384 to 524288