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## Upgrading Hosting Accounts

To modify settings for a single domain or Web site:

1. On your Home page, click the domain name you need.
2. To allocate more disk space, bandwidth and other resources, click Limits in the Domain group, adjust the following settings as required:
   - Maximum number of domains. The total number of domain names/web sites you can host on the server. This includes web sites that you host on this server, and domain forwarders that point to web sites hosted on other servers. Domain aliases (additional domain names for sites hosted on this server) are not limited by this resource type.
   - Maximum number of domain aliases. Specify the number of domain aliases that can be used for this domain.
   - Maximum number of subdomains. Specify the number of subdomains that can be hosted under this domain.
   - Disk space. Specify the total amount of disk space allocated to a hosting account associated with the domain. This amount is measured in megabytes. It includes disk space occupied by all files related to this domain/web site: web site contents, databases, applications, mailboxes, log files and backup files. This is the so-called soft quota: when it is exceeded, domain names and web sites are not suspended automatically, only the appropriate notices are sent to your and your provider's e-mail addresses and the resource overage is indicated by the icon shown in the control panel to the left of the domain name (see the list of domain names on your Home page).
   - MySQL databases quota and Microsoft SQL databases quota. Specify the maximum disk space amount that MySQL and Microsoft SQL Server databases respectively can occupy on a domain.
   - Maximum amount of traffic. Specify the amount of data in megabytes that can be transferred from the web site during a month. Once the limit is reached, the appropriate notices are sent to your and your provider's e-mail addresses and the resource overage is indicated by a corresponding icon shown in the control panel to the left of the domain name (see the list of domain names on your Home page).
   - Maximum number of web users. Specify the number of personal web pages that the domain owner can host for other users under his or her domain. This service is mostly used in educational institutions that host non-commercial personal pages of their students and staff. These pages usually have web addresses like http://your-domain.com/~username.
   - Maximum number of additional Microsoft FrontPage accounts. Speficy the maximum number of additional Microsoft FrontPage accounts that can be created on a domain.
   - Maximum number of additional FTP accounts. Speficy the maximum number of additional FTP accounts that can be created on a domain.
   - Maximum number of MySQL databases and Maximum number of Microsoft SQL Server databases. Specify the maximum number of MySQL and Microsoft SQL Server databases respectively that can be hosted on a domain.
   - Maximum number of mailboxes. Specify the number of mailboxes that can be hosted in a domain.
   - Mailbox quota. Specify the amount of disk space in kilobytes that is allocated to each mailbox in a domain.
   - Total mailboxes quota. Specify the total amount of disk space available for all mailboxes on a domain.
   - Maximum number of mail redirects. Specify the number of mail redirects that can be used in a domain.
   - Maximum number of mail groups. Specify the maximum number of mail groups that can be used in a domain.
   - Maximum number of mail autoresponders. Specify the number of automatic responses that can be set up in a domain.
   - Maximum number of mailing lists. Specify the number of mailing lists that the domain owner can run in a domain. To allow the use of mailing lists, you should also put a check mark into the Mailing lists check box under the Preferences group.
   - Maximum number of Java applications. Specify the maximum number of Tomcat Java applications and applets that the domain owner can install in a domain.
   - Maximum number of IIS application pools. Specify the total number of dedicated IIS application pools that the customer can allocate between his or her domains.
   - Maximum number of shared SSL links. Specify the total number of subdomains (including their parent domain) that can link to the Master SSL domain defined by the server administrator.
   - Maximum number of ODBC connections. Specify the maximum number of ODBC connections that can be set up on a domain.
   - Validity period. Specify the term for a hosting account. At the end of the term, the domain/web site will be suspended, its Web, FTP and mail services will no longer be accessible to the Internet users, and domain owner will not be able to log in to the control panel.
3. Click OK.
4. To add hosting features, such as support for programming languages and scripts, click Setup in the Hosting group, and adjust the following settings as required:
   - IP address. If you have a number of IP addresses to choose from, select the required address from the IP address drop-down box. Notice that e-commerce sites need a dedicated IP address (not shared among other sites) to implement Secure Sockets Layer data encryption.
   - SSL support. Secure Sockets Layer encryption is generally used for protecting transfer of sensitive data during online transactions on e-commerce Web sites that run on dedicated IP addresses. SSL certificates that participate in the encryption process are usually applied to a single domain name on a single IP address, therefore, each site that needs SSL protection must be hosted on a dedicated IP address. An exception to this is subdomains, which you can protect with a wildcard certificate. Installing an SSL certificate on a Web server that hosts several web sites with different domain names on a single IP address (shared or name-based hosting) is technically possible, however, it is not recommended: the encryption will be provided, but users will get warning messages on attempt to connect to the secure site. To allow SSL encryption for the Web site, select the SSL support check box.
   - Certificate. If you have a number of SSL certificates to choose from, select the SSL certificate that must be used by Web server to encrypt online transactions to this web site.
   - FTP/Microsoft FrontPage Login and FTP/Microsoft FrontPage password. Specify the user name and password that will be used for publishing the site to the server through FTP. Retype the password into the Confirm Password box.
   - Hard disk quota. In addition to the soft quota, you can specify the so-called hard quota that will not allow writing more files to the web space when the limit is reached. At attempt to write files, users will get "Out of disk space" error.
   - Access to system. This allows you to directly access the system through a Remote Desktop connection. However, allowing system access via RDP also poses a potential threat to the server security, so we recommend that you do not allow it, leaving the Login prohibited option selected.
   - SiteBuilder support. SiteBuilder is an efficient and user-friendly WYSIWYG web site editor running through the web interface. Leave the Publish site with SiteBuilder checkbox selected to be able to access SiteBuilder and build web site through your Plesk control panel interface by clicking SiteBuilder Wizard on the domain management page or clicking the Desktop shortcut in the SiteBuilder Admin navigation pane group. The version of SiteBuilder coming in the standard Plesk distribution is fully functional and its use is not limited in any way by the manufacturer (but domain administrators can be restricted from accessing it).
   - Microsoft FrontPage support. Microsoft FrontPage is a popular web site authoring tool. To enable publishing and modifying the site through Microsoft FrontPage, select the Microsoft FrontPage support and Microsoft FrontPage over SSL support check boxes, and set the Remote Microsoft FrontPage authoring option to allowed.

     Note. Microsoft FrontPage over SSL support is available only when SSL support is enabled on a domain.

   - Support for programming and scripting languages widely used in development of dynamic Web sites and server-side Web applications. Specify which of the following programming and scripting languages should be interpreted, executed or otherwise processed by the web server: Active Server Pages (ASP), Active Server Pages on .NET framework (ASP.NET), Server Side Includes (SSI), PHP hypertext preprocessor (PHP), Common Gateway Interface (CGI), Perl, Python, ColdFusion and Miva scripting required for running Miva e-commerce solutions.

     Note. If ASP.NET support is enabled, ASP.NET version 2.0 is set as default. You can change the version in the corresponding drop-down menu.

   - Web statistics. To allow you to view the information on the number of people visited the site and the pages of the site they viewed, select a module in Web statistics drop-down menu and select the accessible via password protected directory /plesk-stat/ checkbox, if required. This will install the selected statistical software module, which will generate reports and place them into the password protected directory. The domain administrator will then be able to access Web statistics at the URL: https://your-domain.com/plesk-stat/ using their FTP account login and password.

     Note. If domain administrator changes the FTP credentials, web statistics access credentials do not change. The original login and password specified upon the domain creation should always be used for accessing password-protected web statistics directory.

   - Custom error documents. When visitors coming to site request pages that the web server cannot find, web server generates and displays a standard HTML page with an error message. To give domain owner the ability to create their own error pages and use them on a web server, select the Custom error documents checkbox.

     Note. You can enable the support for all programming and scripting languages, web statistics and custom error documents at once by selecting All services checkbox in the Services group.

   - Additional write/modify permissions. This option is required if customer's web applications are using a file-based database (like Jet) located in the root of `httpdocs` or `httpsdocs` folders. Please note that selecting this option might seriously compromise the web site security.
   - Use dedicated IIS application pool. This option enables the use of dedicated IIS application pool for web applications on a domain. Using dedicated IIS application pool dramatically improves the stability of domain web applications due to worker process isolation mode. This mode gives each web site hosted on the server the possibility to allocate a separate process pool for execution of its web applications. This way, malfunction in one application will not cause stopping of all the others. This is especially useful when you are using shared hosting package.
5. Click OK.

To modify settings for a number of domains or Web sites:

1. On your Home page, select the check boxes corresponding to the domain names you need.
2. Click Group Operations located above the list of domains.
3. Modify the settings as required and click OK.

In this section: Renewing Hosting Accounts