MailEnable Enterprise Guide
Cluster Management
Cluster Management > Cluster Management

MailEnable stores all system data in a shared storage repository. Server specific information is stored in the Windows Registry (such as details about which IP addresses a service is bound to).  This means that it is possible to install multiple server nodes and point them at the same storage repository.

By load balancing and clustering front-end servers (IIS, SMTP/POP, IMAP) the system can scale out easily from the front-end perspective. Ideally, there would be a single file service (probably network attached storage or a SAN) and point all the MailEnable servers to the same post office/configuration repository. This means that SMTP, POP or MTA servers can be added as required and IP load balancing can be used to provide a clustered IP address.

The cluster management window can configure whether an individual server is a standalone server, cluster controller or a server that is joined to another cluster controller.  This utility will create the necessary file system share and modify MailEnable’s configuration depending on the mode selected for the server. MailEnable services will need to be restarted after making changes to the clustering.

A cluster controller is a server which has a hidden share called MAILENABLE$. This share needs to have both the configuration and data paths as a subdirectory, so the server must not have separate paths set for this. For example, in a default installation of MailEnable, this would be C:\Program Files\Mail Enable. By setting the server as a cluster controller, the hidden share will automatically be created.

A cluster member is a server that points its data and configuration storage at another server that is a cluster controller. By enabling a server as a cluster member, the necessary paths are altered and all the MailEnable services are optionally set to run under the IME_ADMIN Windows user account.  The IME_ADMIN users on all servers must have the same password. Use the MEInstaller.exe application that is in the Mail Enable\bin directory to reset this password.

To remove the server from a cluster, or to prevent a server from being a cluster controller, select the option for the server to be standalone and apply the changes.

The cluster management utility configures whether an individual server is a standalone server, cluster controller or a server that is joined to another cluster controller.  This utility will create the necessary file system shares and modify MailEnable’s configuration depending on the mode selected for the server. The MailEnable services will need to be restarted after making changes to the clustering.

To make the changes, select the option that best describes this server. If the server is member server, ensure that it is configured to point to the appropriate controlling server before clicking the apply button.