1
Introduction

Data Locality

I/O makes or breaks the system, so when it comes to IT infrastructure planning, it is imperative to keep the throughput balance of all the components. The overall system performance will always be approximately equal to the performance of its slowest part. Thus, even one slow component will bring down an uber-fast system composed of high-end hardware. Such a problem is called “bottleneck”, meaning there is a “narrow end”, which slows down the whole process. At the same time, one ultraperforming component will not make a difference in an otherwise mediocre system. That is why balancing throughput of components is the key to cost-efficiency of the setup.

Explore StarWind VSAN —
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Problem

Problem of iSCSI Technology for Shared Storage

Interconnect fabrics are typically much slower than high-speed data storage like flash and especially DRAM. This makes them the “bottleneck” of a system, which has great internal data processing capabilities, because no matter how fast the I/O is, the data still has to go through the slower wire. The issue negates all the benefits of fast storage like ultra-performing all-flash setups and greatly reduces cost-efficiency of the IT infrastructure – there is no way to get the maximum I/O speed when data has to go through fabrics.

VM data distributed across N nodes (Read & White path)
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Solution

Data Locality Solution

Processing as much of the I/O as possible locally helps avoid the slow data transfer through interconnect fabric and achieve the highest performance the setup can provide. This approach is called “data locality” and it is utilized in StarWind appliances to maximize performance. The idea is in keeping the compute and storage resources for every virtual machine on the same physical node. This way the VM data will rarely have to go through the slow wire and the performance will increase.

VM data local: Write path
VM data local: Read path
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Conclusion

Ensure High Performance with Data Locality from StarWind

“Data locality” effectively solves the problem of slower interconnect fabrics being the “bottleneck” of the IT infrastructure. It keeps most of the I/O for each process locally within the boundaries on its physical node and ensures much better performance than typical multi-node configurations, where compute and storage resources for one process may be located on different servers. Additionally, “data locality” provides lower latency, because there is no network stack processing overhead, as much less data has to be transferred.

5
What The World Says About Us

StarWind gets praise for its solution's high level of customization in the 2019 Magic Quadrant for HCI



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Success Stories

We were able to build 2-node storage clusters based on virtualization in 19 hypermarkets without any problems and with high cost-efficiency.

Vass Sandor, IT Infrastructure Leader

By being able to virtualize our environment with StarWind, we were able to retire some old hardware, get our services highly available, reduce power consumption and heat in our server closet.

David Gardner, Information Systems Manager

We are satisfied with StarWind. The support is really fantastic. Whenever any issue arises, the response is very prompt, and solution is immediate.

Srinivas Kouda, Company’s Representative

StarWind got us off the clustered environment, which was a big help. So, I could regain control of my storage and reclaim and redistribute the space we desperately needed.

Ryan Fulton, Company’s Representative

Price + Simplicity. StarWind VSAN offers great pricing and allows us to get work done without expensive custom hardware. It also makes getting back online quick and easy after an outage or hardware failure.

Aaron Hayes, IT Manager

We chose StarWind Mainly because of the cost compared to other vendors. Simplicity of setup was also a major factor and I like the fact that you don’t need a vendor certified engineer to perform the installation.

John Harris, Windows System Administrator,
Department of Physics, University of Oxford

Because of recommendations of older colleagues, with StarWind, we got a reliable storage with no additional hardware. There was a need to increase IT infrastructure performance and we saw StarWind as the most cost-effective solution.

Željko Medić, Director of IT Department

StarWind is the best storage product I have ever used! It satisfies and exceeds requirements.

Joe Gursky, Director of IT
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