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Business requirements and application criticality should guide the approach chosen for business continuity.  Consider the concepts of RPO (Recovery Point Objective) and RTO (Recovery Time Objective).
When procuring IaaS (Infrastructure as a Service) or SaaS (Software as a Service), it is essential for the organization to perform due diligence regarding what disaster recovery mechanisms the service vendor uses. With havin so much content do you ever run into any issues of plagorism or copyright infringement? Ho elaborato un rapido schema per sintetizzare i concetti di RPO (Recovery Point Objective) ed RTO (Recovery Time Objective), le cui definizioni sono gia ampiamente disponibili in Wikipedia (RPO e RTO). Diciamo innanzitutto che non esiste uno schema unico e definitivo dovendo, ogni organizzazione, adeguarlo alla propria realta tecnologica. It would be fair to say that without the internet, computers or technology, many of today’s businesses would flounder. Business continuity gives your business the ability to bounce back from unexpected disruptions and disasters – this could be anything from a fire or flood to a malicious attack or hacking attempt. The first step to successful business continuity is to fully understand the level to which you should be protecting your IT against disasters. Each of these systems or processes contributes to the day-to-day functioning of the business and a value can be attached to each. It is as important to calculate the amount of acceptable irrecoverable data loss from a system. To help us understand this better, two key concepts are introduced which underpin the cost model for Disaster Recovery.
The amount of data loss, expressed by an amount of time, that is acceptable in the event of a disaster. This is the amount of time, set as an objective (not a mandate) to which attempts are made to restore service to the business following a disaster. As shown in the above diagram, the RPO and RTO show the ‘acceptable’ time either side of when the disaster hit (shown by the red line) for full service to be resumed. The curve of each of these lines demonstrates the increase in cost to reduce the objective amount of time it takes to recover. It is clear to see from the graph above that implementing a solution with both a short RPO and RTO comes with high costs. To enable short RPO and RTO, we can geographically disperse the IT that provides their service across multiple datacentres, mitigating failure of one entire datacenter. Like the previous (Short RPO, Long RPO) scenario, implementing a solution which requires long RPO and short RTO the costs are lower. There is a huge range of methods for implementing business disaster recovery solutions, however large or small. The key is not to forget about the potential for disaster and its potential effect on business.
The UKFast team are positioned to assist with any enquiries with regards to how Disaster Recovery solutions can assist your business IT, if you have any questions or concerns please give us a call. A Recovery Point Objective (RPO) is the maximum time frame your organization is willing to lose data for, in the event of a major IT outage.
If your primary source machine fails, your organization would lose no more than the last 30 seconds of production system updates. An RPO is a business decision as to how much current data (orders, invoices, inventory moves) the business is willing to risk if the production source system becomes unavailable. You won’t know if your actual recovery point will match your RPO unless you measure and adjust your system.


The RPO can also be shrunk over time as you install, measure, and tweak your solution to create tighter synchronization between source and target. A Recovery Time Objective (RTO) refers to how quickly you can switch from your production source machine to your target backup machine, in the event of an emergency. For example, if you designate an RTO of two hours, your goal is to restore service within two hours in the event of a production system failure. In general, the less expensive the solution, the more expensive it will be to implement that system in an emergency. So choose your RTO carefully and understand that it is intimately tied to the tolerance your company has for restoring service after an outage. For example, if you run a switch test to move production from your source to your target machine, the RTA will be the actual time it took to activate your target machine as your new production box. Your RTA is the benchmark for how much time it actually takes to restore production to your target system, if the production system goes down for any reason whatsoever.
If there’s a significant gap between your RTO (goal) and RTA (actual), you’ll need to rework your switchover strategy to improve the time it takes to switch production from source to target. The other thing to note is that when you perform regular switch tests, you can also gauge how effective your RPO is (how tightly your source and target machine data are in sync).
The RTO defines your goal for how quickly production can be shifted to a target machine, in the event of a catastrophic failure. Properly communicated, your RPO, RTO, and RTA are valuable management tools for communicating your goals for your solution and how well you are doing in meeting those goals. Joe is the owner of Hertvik Business Services, a service company providing written white papers, case studies, and other marketing content to computer industry companies. Email Joe for a free quote on white papers, case studies, brochures, or other marketing materials.
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The RPO of a system is the specified amount of data that may be lost in the event of a failure, while the RTO of a system is the amount of time that it will take to bring the system back online after a failure.  In general, site-local mechanisms will provide near-instantaneous RPO and RTO, while disaster recovery systems often will have an RPO of several hours or days of information, and an RTO measured in tens of minutes. The stakes are too high to trust service level agreements alone (in the case of a catastrophic failure during a disaster, will the vendor be solvent and will the compensation received be sufficient to compensate for business losses?). I know this is kind of off topic but I was wondering which blog platform are you using for this site? I’ve just forwarded this onto a coworker who has been doing a little research on this.
You already know thus significantly in the case of this subject, produced me in my opinion consider it from numerous numerous angles.
These pages are not sponsored or sanctioned by any of the companies mentioned; they are the sole work and property of the authors. Let’s think for a minute about what would happen if your business’s computer systems failed.
Business continuity isn’t something to think about at the time of the disaster though, it is a pre-emptive measure, like insuring your car or home to fall back on when the worst happens.
This value determines the affect that its unavailability would have on the business, and from this we can establish a cost-per-unit (of time) to calculate the cost of the unavailability of the service.
This can be difficult to determine, as in an ideal world businesses would remain online and lose no data at all in the event of a disaster. Showing whether it is less acceptable to be without a service for a period of time (RTO) or less acceptable to lose data (RPO) or both.


This increases costs because it requires twice the amount of investment in the IT hardware and setup costs – of course, it is also a very unlikely occurrence to lose an entire datacentre.
An example in this case may be a website where the data is constantly updated with important changes but is only referred to at certain times of the day.
An example in this case may be a website where the data collected (if any) is not critical to the operation of the business but the fact that the site is continually ‘up’ is crucial.
Only for websites that are deemed non-critical or where budget cannot stretch, is this approach to DR is suitable – especially with the extra reassurance of UKFast’s 100% uptime guarantee and hardware replacement guarantee. Implementing the basics – such as dual power supplies or resilient disks in servers – will help to protect from the issues of hardware failure. Assess risk, prioritise resources and build as recoverable a solution as the given budget will allow.
Here’s a primer on what each of these terms mean and how they can help your IT shop in BC, DR, and HA planning. They all work together in the following ways to define how data is synchronized between your source and target machines and how long it takes to switch production from your source to your target machine. In the event of a major outage on a production box, it states your goals for restarting the system on a backup machine or partition.
For manually switched solutions where you need to execute run book steps to redirect production to your backup, it can take several hours. It doesn’t take much to back up your systems but in a crisis, an old-fashioned bare metal restore to a new machine could take a day or more (note: newer virtualization technologies can significantly reduce this gap).
It can only be computed during an actual switchover so having an RTA requires testing your switch strategy. RPO opowiada o wynikach bada w wizieniach i o tym, co zrobi, by pomoc osobom, ktore nigdy . Through increasingly sophisticated (and costly) infrastructures, these times can be reduced but not entirely eliminated.
While the author(s) may have professional connections to some of the companies mentioned, all opinions are that of the individuals and may differ from official positions of those companies. However solutions that enable this come with astronomical costs that are simply out of the reach of small businesses and start-ups. If the solution is offline and the changes can be applied once it is back up and running it is possible to afford a longer RPO and, therefore, a lower cost. This is where it is important to note that IT budgets will be one of the primary influences on the choice of RPO and RTO for any business. And for rebuilds where you have to perform a bare metal restore, it can take a day or longer. It may take several tens (or hundreds) of $1000s of dollar to set up a clustering system or a replicated system but in a crisis, a target system can be quickly activated reducing the outage’s effect on your business. This is a personal blog of the author, and does not necessarily represent the opinions and positions of his employer or their partners. Calculating an acceptable amount of data that could be lost without having a disastrous affect on the business helps to establish a workable business continuity strategy. Any disaster occurring that affects the original data will result in a maximum of 5 hours loss of data up until the second scheduled back up at 5:59pm.



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