## 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 the Limits icon in the Domain group, adjust the following settings as required:
   - 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).
   - 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. If you wish to allow execution of scripts embedded in personal web pages, select also the Allow the web users scripting check box.
   - Maximum number of databases. Specify the number of databases that can be hosted in 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.
   - Maximum number of mail forwarders. Specify the number of mail forwarders 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. The mailing lists are served by the GNU Mailman software, which may or may not be installed on the server. If it is not installed and you or your customers would like to use it, ask your provider to install it.
   - Maximum number of Java applications. Specify the maximum number of Java applications or applets that the domain owner can install in 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 the Setup icon 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. Bear in mind 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.
   - Use a single directory for housing SSL and non-SSL content. By default, when users publish their sites through their FTP accounts, they need to upload the web content that should be accessible via secure connections to the `httpsdocs` directory, and the content that should be accessible via plain HTTP, to the `httpdocs` directory. For the convenience of publishing all content through a single location ? `httpdocs` directory, select the Use a single directory for housing SSL and non-SSL content check box.
   - FTP login and FTP 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. Specify the amount of disk space in megabytes allocated to the web space for this site. This is 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 the "Out of disk space" error. Hard quotas should be enabled in the server's operating system, so if you see the "Hard disk quota is not supported" notice to the right of the Hard disk quota field, but would like to use the hard quotas, contact your provider or the server administrator and ask to enable the hard quotas.
   - Shell access to server with FTP user's credentials. This allows a site owner to upload securely web content to the server through a Secure Socket Shell connection, however, allowing shell access also poses a potential threat to the server security, so we recommend that you do not allow shell access and leave the Forbidden option selected.
   - FrontPage support. Microsoft FrontPage is a popular web site authoring tool. To enable users to publish and modify their sites through Microsoft FrontPage, select the FrontPage support and FrontPage over SSL support check boxes, set the FrontPage authoring option to allowed, and specify the FrontPage Administrator's login and password.
   - 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), Server Side Includes (SSI), PHP hypertext preprocessor (PHP), Common Gateway Interface (CGI), Perl, Python, ColdFusion, and Miva scripting language required for running Miva e-commerce solutions. By default, PHP is configured to operate in safe mode with functional restrictions. To learn more about PHP safe mode, refer to http://php.net/features.safe-mode. Some web applications may not work properly with safe mode enabled: If an application on a site fails due to safe mode, switch the safe mode off (or ask your provider to do this) by clearing the PHP 'safe_mode' on check box in the hosting account properties (Home > domain name > Setup icon in the Hosting group).
   - Web statistics. To allow domain/web site owner to view the information on the number of people visited his or her site and the pages of the site they viewed, select the Web statistics and accessible via password protected directory /plesk-stat/ check boxes. This will install the Webalizer statistical software, which will generate reports and place them into the password protected directory. The domain/web site owner will then be able to access Web statistics at the URL: https://your-domain.com/plesk-stat/webstat using his or her FTP account login and password.
   - Custom error documents. When visitors coming to your site request pages that the web server cannot find, the web server generates and displays a standard HTML page with an error message. If you wish to create your own error pages and use them on your web server or allow your customers to do that, select the Custom error documents check box.
5. Click OK.

In this section: Renewing Hosting Accounts