Network protocols

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  • Vendors take alternatives to OpenFlow SDN

    OpenFlow SDN is promising but vendors are now contemplating alternatives to the protocol Continue Reading

  • What to consider when choosing the best Ethernet switch

    IT pros need to consider new developments in technology like software-defined networking and the Internet of Things when choosing the best Ethernet switch for their current and future network. Continue Reading

  • For maximum benefits of virtualization, storage management is key

    Server virtualization increases the complexity of storage management and forces administrators to pay even closer attention to issues such as available bandwidth and overprovisioning. Approaching management and provisioning in the same way as in a traditional environment could be an invitation for poor performance, wasted capacity and risky data protection techniques. Each of the major server virtualization vendors takes a slightly different approach to storage management and configuration, which might dictate aspects such as recommended protocols, feature sets and data protection schemes. But in addition to this, storage administrators must be sure to construct storage architectures based on different requirements than what they might architect in a traditional, non-virtualized environment. They need to provide an increased level of performance because virtualization multiplexes data that was once sequential together, making it more difficult to read and write. Providing fault tolerance against hardware failures is also essential to keeping virtual machines (VMs) and their applications up and running. The VM storage also must commonly support either multi-path connectivity or storage replication so that running VMs can be moved between host servers on an as-needed basis with little to no downtime. This e-book will help storage administrators plan for these requirements before architecting storage for their virtual environments. Continue Reading

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  • Next-generation Wi-Fi: How SDN changes the wireless landscape

    The future is now. SDN technologies are quickly becoming central to vendors' next-generation Wi-Fi products and services -- and their role will only increase. Continue Reading

  • The science behind virtual routers and their emerging roles

    The evolution of virtualization has now hit the router market. Here's what you need to know to make virtual routers work for you. Continue Reading

  • Understanding data storage requirements in a virtual environment

    Even though virtualization has become commonplace in today's data centers, provisioning storage for applications on virtual machines (VMs) often remains a pain point for IT professionals. Random I/O processes unique to virtual environments often put a strain on storage hardware and it's common for one, or even several, VMs to eat up bandwidth, leaving others without the power they need. In addition, configuring logical unit numbers and volumes when provisioning storage for virtual environments can be extremely complicated.

    Today, vendors of emerging storage technologies are attempting to pave a smoother path toward better performance and capacity in virtual environments. Technologies such as hyper-converged storage aim to create a simpler configuration by shipping the hypervisor and storage in one box. Other products, deemed "software-defined storage," often pool storage to better utilize capacity and performance. But that doesn't mean managers don't still need to understand the unique set of challenges VMs place on storage. In this e-book, readers will learn how to cope with these challenges by understanding how virtualization changes the way storage should be provisioned and monitored. They will also learn how new technologies in the storage for virtual environment space can help and what types of applications they are most beneficial for, and how once murky technologies such as software-defined storage have grown to be more clearly defined as viable options for storing VMs.

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