![](/images/new-backgrounds/1190490/19049051x1.webp)
Local Installation
If you do not plan to have workstations access a domain controller, install the database server on a local computer. For a local installation, you should have administrative privileges.
Domain Installation with Domain Administrator Privileges
Domain installation is useful if you run the database server on several computers and want a central security mechanism. If several of your computers belong to the same domain, and therefore share the same primary domain controller or domain controllers, perform a domain installation on these computers. To install in a domain, you must have administrative privileges and your computer must already belong to a domain. Run the installation program and choose the Install in Domain option when the installation wizard prompts you.
User informix
| User informix is a user account with main authority over an IBM Informix |
| Dynamic Server instance. |
| User informix is required for most installations because it has the unique user |
| identifier (UID) to manage and maintain IDS instances and databases on the host |
| server. The only exception to this requirement is when you install IDS 11.50 as |
| local system user. |
| The password for this user account must be protected. Only let trusted database |
| and security administrators log in as user informix. |
| If you are installing IDS for the first time on your system and have not selected the |
| local system user option, the installation program prompts you to create the |
| informix user by providing a password. If user informix already exists on your |
| system, the installation program prompts you to confirm the password. |
| Important: The database server will not start if password standards for either |
| user informix or end users do not conform to local security standards. |
|
|
| Upgrading the Database Server |
| For information on migrating your database server from a previous version of IBM |
| Informix Dynamic Server to Version 11.50, and for information on migrating your |
| data, see the IBM Informix Migration Guide, Version 11.50. |
See also “Upgrade of IDS by Overwriting an Existing Installation” on page | |
replace the earlier product. |