How many usernames and groups are available with the Access Restrictions enabled?

The maximum usable numbers of user names and groups when the Access Restriction is enabled is different depending on the following environment.

• Access restriction to the user names and groups which were manually registered in the TeraStation:
  
  Usernames: 300 local users (including admin users and guests)
  Groups: 300 local groups.
  
  
• Access restriction in the Active Directory environment:
  
  Usernames: 1000 domain users (Up to 10000 user names can be registered, however, an environment with 1001 domain users or more are not supported.)
  Groups: 1000 domain groups (Up to 10000 groups can be registered, however, an environment with 1001 domain groups or more are not supported.)
  
  
• Access restriction in the logon-needed NT domain environment:
  
  Usernames: 1000 NT domain users (Up to 10000 user names can be registered, however, an environment with 1001 NT domain users or more are not supported.)
  Groups: 1000 NT domain groups (Up to 10000 groups can be registered, however, an environment with 1001 NT domain groups or more are not supported.)
  
  
• Access restriction by delegating authentication to an external SMB server:
  
  Usernames: 300 users (including admin users and guests)
  Groups: 300 groups