meastaugh1
I had the same problem with the group limit and found no answers anywhere. After a bit of playing around I found the group and user list limit can be increased from 1000.
1. Telnet into the Terastation and login as root
2. edit /www/cgi-bin/module/BufDomainGroupListInfo.pm
3. In BufDomainGroupListInfo.pm script you will see each subroutine has a counter which is set to 1000 "if ($group_count > (1000-1)) { $flag++; }"
4. If you wanted to enumerate 5000 groups you would need to edit each of this to read "if ($group_count > (5000-1)) { $flag++; }".
5. write the file and bingo yer enumerating 5000 groups.