In storage networking terminology, a Storage Area Network (SAN) is a high-speed subnetwork of shared storage devices. A storage  device is a machine that contains nothing but a disk or disks for storing data.

A SAN's architecture works in a way that makes all storage devices available to all servers on a LAN or WAN. As more storage devices are added to a SAN, they too will be accessible from any server in the larger network. In this case, the server merely acts as a pathway between the end user and the stored data.

Because stored data does not reside directly on any of a network's servers, server power is utilized for business applications, and network capacity is released to the end user.

Cloud Web Hosting is designed to keep downtime for your email and websites to an absolute minimum. It is targeted at businesses and consumers who need a very high level of uptime but don't have a large IT budget to spend on complicated load-balanced, multi-server solutions. It is perfect for web sites that are not busy enough to need the increased hardware resources of a VPS or dedicated server but still would like to have access to enterprise grade hardware and uptime.

Cloud hosting is ideal for small online stores, affiliate marketers, budding entrepreneurs, web designers, photographers, small businesses, or anyone who needs the peace of mind that can be found in enterprise class web hosting.

We start with enterprise grade hardware and software that encompasses every component of the system. There is at minimum two of EVERY component, all configured for seamless and automatic failover. We utilize network storage in a RAID 10 configuration which is then mirrored to a secondary RAID 10 array. The arrays are accessed by frontend servers which serve the data to your websites. There are multiple routes to the storage so if an interface card failed the secondary would take over instantly. In addition to this redundancy, the data is backed up to a third location in an easily restorable format.

All of your sites are operated in virtual machines. If the physical machine your virtual machine is hosted on experiences a failure, they will be automatically migrated to a spare server without any prolonged downtime. For more information on how our system responds to some common problems and disasters please read below.

We have designed our reduntent web hosting to have no single fault layer and to offer our customers an affordable shared hosting solution with enterprise class reliability.

We know how important email is and our email services are designed to be highly redundant. Your e-mail will be handled by a completely separate, yet fully integrated system that is on separate storage and hardware cluster. Our email system employs much of the same redundant technology our Cloud Hosting systems do. The frontend machines are interchangeable so if one physical machine were to fail it would simply and seamlessly start using the next server in line. We designed this system to run our own vital email system and now you can utilize it too!

A major worry with traditional shared hosting is the possibility of hardware failure. This includes everything from the relatively minor hard drive crash to the extreme event of a motherboard failure. With our Redundant Web Hosting you are fully protected from all these events. Because we are using virtualized machines, any hardware failure on a frontend server is easy to bypass -- we simply move our clients in real time to a new server. A majority of failures can be mitigated with zero downtime but in the event of complete hardware failure we can migrate the virtual machine to a spare server and be up again in under 10 minutes. Even the storage system is redundant and provides automatic, uninterrupted flow of your vital data!

Another common problem with shared web hosting is that any single user on your shared server has the potential to make the server unstable for everyone else. This is generally caused by large bursts of traffic or by a broken or badly written script. With our solution you are still sharing hardware resources with others to make it cost effective, but you are further protected from the chance this will affect your site. Because our Redundant Hosting uses our virtualized machine technology, we can easily move the container the problem user is in to a spare server and increase the hardware resources by 500% to 1000%. This allows us to keep everyone's websites online and happy while we track down the problem.

Yes! DNN4Less' Cloud Hosting includes every feature found in our normal shared web hosting packages. The only difference is the system is built on enterprise grade hardware and designed for full redundancy.

For enhanced redundancy, services such as website hosting can be load balanced across multiple servers. This means the website can stay online even if one of the servers experiences a failure. The ratio of traffic each server receives is adjustable and can be tuned according to the servers physical hardware or resource usage.  Load balancing also provides scalability. As a website becomes more popular, additional web servers hosting the site in question can be added in order to accommodate the increase is resource demand.