Just adding some related but unofficial answers regarding app numbering:
- New instance for wordpress app - #2 by dnutan
- Question about NS8 (count) behavior when creating new containers or migration - #2 by dnutan
- NS7 to NS8 migration - sync data fails - #60 by dnutan
Also some user’s concerns:
- Important questions about instance numbering and disk mapping under NS8
- NS Samba Shares on External USB Disk - #13 by yummiweb
Note: IIRC apps can have a custom identification label name (but that doesn’t change the instance name).