OCTOPUSHA+

OctopusHA+ v3.1 is tailored to provide high availability and reliability for Microsoft Exchange environments on the Windows NT platform.  Octopus can mirror a database, capturing real-time messages as they are delivered and safeguard them on a target server.  In the event the Microsoft Exchange server fails, Octopus can also switch users over to a secondary server, without requiring a reboot of the server.  This solution promotes uninterrupted business communications and prevents unplanned downtime, which could adversely effect end user productivity.

QUALIX