How does SDN interact with other software-defined storage systems?

Beyond storage networks considered separately, it is important to examine the relationship and interactions between SDN and SDS.

The concept of software-defined architectures It is based on the abstraction of the physical part by placing the software in charge of managing the intelligence. IT specialists point out that this model will define the future of data centers. In this segment there are essentially three main trends: software-fined networks (or SDN, observing the acronym in English (software-defined networks), software-defined storage (SDS, according to English nomenclature, (software-defined storage) Yes data center defined by software (SDDC, software-defined data center).

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When it comes to storage and networking, the key component is virtualization. In the era of infrastructure defined by softwarethe services implemented in the storage and network will also be virtualized. In general terms of operation, data services are extracted from storage devices and switches network to run on any VM (Virtual Machine) or container in the file bunch. As a result, services can expand and contract as needed to handle any workload.

Expectations regarding the potential of SDN are great, once the technology is presented exactly as a scalable and flexible solution, in addition to the economic and resource aspect, once the extraction implies that the software for services no longer has to run within a switch or a storage device, which decreases equipment costs.

The well accompanied market is close to incorporating this technology. According to the IDC, the SDN segment for the enterprise and service provider sectors in the Cloud It is estimated that it will grow from $360 million in 2013 to $3.7 billion in 2016.

But it is a factor that must be analyzed together. Outside of considering SDN and storage separately, industry analysts recommend the importance of examining the relationship and interactions between SDN and SDS in order to identify potential performance issues.

The relationship between SDN and SDS

Storage defined by software involves simplifying storage resources to enable the efficient creation of swimming poolsreplication and distribution on demand, resulting in a storage layer similar to virtualized computing, with characteristics of complementarity, flexibility and scalability. The benefits of SDS include overall reductions in the cost and complexity of information storage infrastructure.

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In the case of SDN, as previously mentioned, the benefits enable a more flexible, agile and dynamic network that keeps up with the pace of business demands. In SDN environments, just like IT administrators for Cloud they can create the policies that will define who their “tenants” are. Cloud can do on the Internet. For example: several data centers defined by software They can use overlay infrastructures, so that each tenant can have its own virtual network with its own authentication and authorization regime, without the availability and scalability limitations of conventional VLANs.

In the case of conservation defined by art softwarewe don’t see the same level of patterns or consistency of thinking with SDN. Part of the focus of so-called SDS products is turning to the virtualization of services within the storage box, and some marketers are taking the approach that if there were software in it device storage, this is defined by the same software.

Meanwhile, we are beginning to advance into another phase of Safety data sheetwith products from software which can be extracted from the platform hardware and performed in a bunch or virtual machine. A great example is CefAND open source very popular. This software can be done virtually and is easy to imagine a Cef bunch where drives are parked in dense packages or distributed across servers, as the raw transfer protocol codes are executed by virtual instances.

An important aspect of this relationship, however, should be noted: when more are performed clusterStorage has networking and topology issues that impact both performance and data integrity. Hook up a bunch of drives at the far end of a slow network and you’ll have problems.

Likewise with SDNthe networks will not be homogeneous. computation rack tends to have much larger aggregate bandwidth than dorsals of the network, e.g. It’s a good idea to move your computer as close as possible to where your data is stored, as this reduces hidden items and network traffic. spine. Therefore, SDN Yes Safety data sheet They need to discover a type of physical affinity, with resources in both management tools and automated orchestration to handle bandwidth requests.

Finally, storage must be informed about what it should attribute and obtain a file feedback on the speed and amount of bandwidth allocated to the rendering process. The complexity of the process, meanwhile, requires that these problems be solved, mainly in automation, so that system performance is advantageous. The best thing we can do today is to configure the file hardware and treat it as homogeneous.

Security issues

Another aspect of this relationship that deserves attention is the issue of security. Data encryption is known to be vulnerable in an environment bombarded by virtual attacks, and this gap will increase dramatically with the advent of large-scale automated networks. cluster. The resulting short-lived VLAN explosion will open up a powerful attack surface, as detection will become much more difficult.

A suggestion on the solution to protect the data storage is to build a separate storage LAN structure, which implies that the storage LAN carries all the command and control to orchestrate servers, networks and storage, highlighting that the integration between Safety data sheet Yes SDN Additionally, server orchestration is a complex area with a lot of work to do.

Sources:

http://www.networkcomputing.com/storage/how-sdn-interacts-software-fine-storage/1627717507

http://convergenciadigital.uol.com.br/cgi/cgilua.exe/sys/start.htm?UserActiveTemplate=site&infoid=34494&sid=5

http://www.intel.com.br/content/dam/www/public/lar/br/pt/documents/white-papers/how-software-fined-infrastructure-is-evolving-at-intel-paper-por.pdf

http://blog-br.softwareone.com/data-center-definido-por-software-exagerado-ou-inovador

http://cio.com.br/tecnologia/2014/04/07/bem-vindo-a-era-do-data-center-definido-por-software/