Wikipedia defines redundancy as, “the duplication of critical components of a system with the intention of increasing reliability of the system, usually in the case of a backup or fail-safe.”
See http://en.wikipedia.org/wiki/Redundancy_(engineering). Makes sense so far, right? We all know however, that redundant systems can increase overall system availability too, meaning users or processes can run more efficiently. Still for being such a broad topic with many variables, we do see all kinds of monikers used when it comes to this subject: High-availability; load-balancing; fault-tolerant, disaster recovery, and so on. From an abstract perspective all of them are in some way descriptive of redundancy, with the end result real easy to understand: No loss of data and interruptions to your business.
A business interruption can be anything; telephone or internet failures; a corrupt database; a computer virus, a bad disk drive, a failed CPU in the datacenter, or any unplanned system downtime. They can even be as far reaching as a full scale disaster; floods, power outages, hurricanes, or even terror attacks. It goes without saying, but measures must be made to ensure that all mission critical applications are in some way redundant. This could mean anything from a simple backup to a full-blown high available, redundant system. The choice is yours, and the options are plentiful.
Yet, the biggest challenge when considering redundancy for a software application like an enterprise fax server is exactly how much redundancy do you want? After all, Open Text Fax Server, RightFax Edition has a multi-layered architecture in which various components, databases, or processes can be placed into redundant scenarios that can ensure high uptimes while preserving faxes and data from being lost. This is good. Preserving lost faxes means preserving your business after all.
Getting down to some specifics: When architecting your fax solution to provide maximum uptime it is helpful to understand the difference between fault-tolerance and system redundancy, as both can be addressed differently and have different ramifications to a business that relies on fax. A fault-tolerant system will continue to work if a single fax server component fails. Redundancy on the other hand, allows the entire fax enterprise to continue operating if one major component of that system fails. In a redundant scenario each component of the fax server must be duplicated. Typically it is common to have two fax servers operating in tandem, so that if one server fails the other server will continue to operate.
In practical terms specific to Open Text Fax Server, RightFax Edition, there are three typical redundant scenarios used:
Lots of choices and options are available to build a redundant Open Text Fax Server, RightFax Edition system and keep your business up and running. As stated before, the options are plentiful, no matter what size your company. Be sure to work with a Open Text Fax Server VAR or Partner who can help design a plan that meets your needs.
To learn more about Fax Server, RightFax Edition and devising redundant scenarios to protect your business, download our eBook jointly published with Windows IT Pro.