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  1. #1
    WHT-BR Top Member
    Data de Ingresso
    Dec 2010

    [EN] Dell, HP, Intel: Redfish substituirá IPMI

    by Yevgeniy Sverdlik on September 5, 2014

    A group of heavyweight IT and data center vendors has teamed up to create a new standard for out-of-band hardware management to replace the 16-year-old Intelligent Platform Management Interface, which they say is outdated and not good enough to manage modern IT hardware.

    Intel, Dell, HP and Emerson Network Power are the founding fathers of the new standard, which they named Redfish. The standard is currently under development, awaiting formal submission for review to an industry standards body, the vendors said in a news release.

    Out-of-band management means management of hardware independent of the operating system, regardless of whether a machine is turned on or off. It can be used to monitor or change BIOS settings or monitor things like temperature, voltage, fans, power supplies or intrusion into chassis. The management is done through a network connection, and the system being managed has to be plugged into a power outlet.

    Redfish creators are planning to add in-band access to the spec in the future. Currently, it only describes out-of-band management.

    IPMI came out in 1998 and has been supported by all major vendors. Today, however, it has become obsolete, since it cannot adequately describe environments of modern complexity and modern server architectures. It was introduced when servers were managed by 8-bit microcontrollers.

    Redfish, according to its creators, is an evolution of IPMI that aims at addressing its limitations. Its RESTful API and data model are decoupled, which means each can be updated independently. It handles scale much better than IPMI does, capable of managing racks of systems as well as a single node.

    Redfish was also created with modern security standards in mind.

    A development version of the spec is already available on the Redfish website. Users can check it out and provide feedback.

    The next step is to submit the specification to the Distributed Management Task Force, an industry body charged with development, validation and promotion of IT infrastructure management standards.

  2. #2
    WHT-BR Top Member
    Data de Ingresso
    Dec 2010
    Dell & Redfish, What You Need to Know

    Author: Jon Hass

    As revealed in a joint press release yesterday, Dell is participating in a coalition including Emerson, Hewlett Packard, and Intel whose purpose is to create a new industry standard for the management of data center hardware. The initial Redfish specification, which specifically targets server management, will be publically available once published by an industry standards body such as Distributed Management Task Force (DMTF). But today, I want to talk a little about this standard and what it might mean for Dell customers.

    Dell has a long history of supporting industry standards, from IPMI, which was introduced in 1998, to more recent standards such as SMASH. Five years ago, Dell introduced its web services interface (WSMAN) and has since evolved it into one of the world’s most sophisticated and capable server management APIs. Backed by this kind of experience, Dell is a critical partner in the Redfish project, and our participation continues this long legacy of supporting industry standards.

    As with previous industry standards, Dell’s support is a boon to our customers, allowing them to limit the number of management processes needed to manage a multitude of servers. Redfish is no different in this respect, but it brings much more to the table. With scale-out data centers becoming more and more common, a standard that can comprehend the vicissitudes of today’s complex environments is needed.

    Leveraging existing web protocols such as JSON and HTTPS while embracing RESTful design principles and a light weight data model, Redfish is built to meet the challenges of today’s large scale data centers who primarily manage to the lowest common denominator: IPMI.Though IPMI has served the industry well, it was designed for an earlier era of computing, falling short in describing today’s complex, and more and more disaggregated, computer systems.

    Several computer security researchers, such as Dan Farmer, have pointed to vulnerabilities with many implementations of IPMI. For this reason, Redfish is designed from the ground up with security best practices in mind.

    Another advantage to Redfish is that it is opaque, meaning that, unlike IPMI, it does not prescribe the implementation to server vendors like Dell. Instead, it is limited to the API only. Furthermore, the protocol and data model can be revised independently, which will reduce the complexity of implementing any future revisions.

    So, what can Redfish do? Though Redfish will evolve, the initial specification defines a set of management capabilities similar to those available in IPMI:

    Retrieve Telemetry
    - Basic server identification and asset information
    - Health state
    - Temperature sensors and fans
    - Power consumption and thresholds

    - Service endpoint (network-based discovery)
    - System topology (rack, chassis, server, node)

    Basic I/O Infrastructure Data
    - Host NIC MAC addresses for LOM devices
    - Simple hard drive status / fault reporting

    - Session-based leveraging HTTPS

    Common Management Actions
    - Reboot / power cycle
    - Change boot order
    - Configure BMC network settings
    - Manage user accounts

    Access and Notification
    - Serial console access via SSH
    - Alert / event notification
    - Event log access

    Since the joint announcement of Redfish, several questions have been raised about what this means for the future of IPMI and Dell’s WSMAN interfaces. To be clear, Redfish, once it is broadly implemented, will be ideal for large heterogeneous data centers, but at the moment, it currently offers a fraction of the capability in Dell’s WSMAN interface.

    For this reason, Dell still recommends WSMAN as its primary application programming interface and will continue to invest in it for the foreseeable future. Until Redfish is implemented in a large amount of industry server hardware, IPMI will still be a critical standard in the data center. Therefore, until this happens, Dell has no plans to drop support for IPMI in its server products.

    Veja também:

    Redfish Specification
    Última edição por 5ms; 05-09-2014 às 20:36.

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