Login Properties (Server Roles Page)
Use this page to view or change a login's membership in fixed server roles.
Members of the bulkadmin fixed server role can run the BULK INSERT statement.
Members of the dbcreator fixed server role can create, alter, drop, and restore any database.
Members of the diskadmin fixed server role can manage disk files.
Members of the processadmin fixed server role can terminate processes running in an instance of the Database Engine.
Members of the securityadmin fixed server role manage logins and their properties. They can GRANT, DENY, and REVOKE server-level permissions. They can also GRANT, DENY, and REVOKE database-level permissions. Additionally, they can reset passwords for SQL Server logins.
Members of the serveradmin fixed server role can change server-wide configuration options and shut down the server.
Members of the setupadmin fixed server role can add and remove linked servers, and they can execute some system stored procedures.
Members of the sysadmin fixed server role can perform any activity in the Database Engine. By default, all members of the Windows BUILTIN\Administrators group (the local administrators group) are members of the sysadmin fixed server role.