Also, as the Microsoft Exchange Server advances in complexity and usability, email, voicemail, fax and other essential data cannot afford any potential outages. A storage server failure will easily result in a Microsoft Exchange Server outage. IT organizations need to proactively maintain, upgrade, and manage the IT infrastructure components including OS, network components, and storage systems.

On the other hand, businesses as a whole need to prepare for the "just in case" in the events of manmade or natural disasters like terrorism, earthquake, hurricane, wild fire, flood, etc. A thorough planning for high availability and disaster recovery is crucial.

When planning for messaging continuity for Microsoft Exchange Server, it is necessary to consider and prepare for both planned and unplanned downtime as well as for local or remote.

ExpressCluster provides the integrated high availability and disaster recovery solution to protect applications and data just in case the server service is disrupted. Since ExpressCluster does not have dependency with Active Directory services and also does not force an upgrade to Enterprise Edition, it helps meeting the limited IT budgetary control without sacrificing full functionality.

Some large enterprises have multiple Microsoft Exchange Servers running with shared storage. ExpressCluster has unique "virtual server identity" implemented; therefore the outage is transparent to the client systems without any manual intervention. With flexible configuration with multiple primary Microsoft Exchange Servers along with one or more standby server, ExpressCluster eliminates single points of failure in your Exchange environment.

In the event of major disasters, ExpressCluster X WAN recovers the data and application replication to the remote Exchange Server over WAN link. This addresses full protection against storage and full site outage. If the IT infrastructure involves local availability network with shared storage like in a datacenter environment, ExpressCluster can be configured to automatic failover and failback between primary and standby sites. ExpressCluster imposes no restriction on configuration. Organizations do not need to acquire multiple licenses or perform OS or application upgrade to deploy a high availability solution. It offers organizations that depend on Microsoft Exchange a single solution for protecting email availability from a wide variety of problems, ranging from storage-caused outages to server failures and site-wide disruptions.