Architecting The Perfect Continuous Availability And Disaster Recovery Environment

to say, what is your stated service levelcustomer confidence?
agreement (SLA) for application and dataMaking these decisions and being alert to the
recovery time and recovery point objectivesaffect of application downtime will help you to
(RTO and RPO)?decide which applications require the most
RTO deals with the how fast an application has toattention. Establishing which applications require the
be back up and running after a failure, while RPOmost precise RTO and RPO is the first step in
deals with the volume of data that can be lost.deciding what type of solution and architecture will
RTO and RPO can also be defined in terms ofwork best for your business.
capital. That is, how long can you afford to beOver the years, a vast array of point products
down and the amount of data can you afford tohas been developed to solve the specified
waste. When defined in monetary terms, itavailability problems of the time. Whilst there has
becomes rather clear as to where the focusalways been the need for a solution to bring
needs to be.applications back online quickly after a failure, with
There are numerous solutions that provide dataas little loss as possible, discovering a complete
RPO in the seconds range. However, bysolution to the problem has remained elusive.
comparison, there are surprisingly few solutionsHowever, more recent technology advances (in
that can also deliver the same, for applicationreplication, clustering, e duplication etc.) mean that
RTO. Neverfail is one of the select few, to haveis now possible to move away from the well
developed the required technologies required toknown Recovery Centric approach to clearing up
deliver a solution that provides application RTOthe situation, towards a more Availability Centric
and RPO in the near zero range, quickly getting ridapproach.
of application downtime.Even though choices have been made with regard
So, how do you know which applications are theto the criticality of applications in an environment,
most important?there is still an overriding fact that cannot be
Which require RTO/RPO in the near zeroexcluded, application downtime is intolerable for
timeframe?most application owners, users, customers and
The solutions to such questions are in fact prettymanagement. Given this, it seems like ensuring the
simple. Which applications bring about the mostapplication is adequately protected and monitored,
help desk calls when they are unavailable? Whichso that a pre emptive action can be taken to
applications, when unavailable, cause thesolve a issue before it becomes an concern, is
organization to lose money, or productivity, orkey.