International Business Machines Corporation

Andrew S Heinzmann

Justin Potok Bandholz

Ralph M Begun

Fernando Aramis Lopez

James Joseph Parsonese

Brian Michael Kerrigan

Martin Joseph Crippen

Patrick M Bland

Brian Alan Trumbo

Michael Sven Miller

Tony Carl Sass

Edward John McNulty

Steven E Howell

Joseph Eric Maxwell

Marcus Alan Baker

Cynthia Michelle Grosser

Susan Pohl Wise

Phillip L Weinstein

Richard P Southers

Michael J Huck

Pravin Patal

Courtney Long

Methods, apparatus, and computer program products are described for resetting a HyperTransport link in a blade server, including reassigning, by a blade management module, a gate signal from enabling a transceiver to signaling a HyperTransport link reset; sending, by the blade management module to a reset sync module on an out-of-band bus, the gate signal; and in response to the gate signal, sending, by the reset sync module to the blade processor, HyperTransport reset signals. The HyperTransport link includes a bidirectional, serial/parallel, high-bandwidth, low-latency, point to point data communications link. The blade server includes the blade processor, the reset sync module, and the baseboard management controller. The blade server is installed in the blade center. The blade center includes the blade management module. The blade management module is coupled to the baseboard management controller by the blade communication bus.

Resetting a hypertransport link in a blade server

Resetting a HyperTransport link in a blade server

This invention enables authenticated communications (transactions) to take place on a standard IC bus without requiring modification of existing IC devices. Read and write transactions occurring on the bus are authenticated using an Authentication Agent and a shared secret key. In addition to allowing verification of the legitimacy of the transactions, the authentication of the IC transactions enhances the reliability and serviceability of the bus and devices on the bus by allowing the Baseboard Management Controller (BMC) to quickly determine and pinpoint errors.

[object Object]

A design structure embodied in a machine readable storage medium for designing, manufacturing, and/or testing a design is for securing of leased resources on a computer. The design structure includes a computer for securing resources may comprise at least one processor, a plurality of resources, wherein each resource is associated with configuration data and a programmable logic device connected to each of the plurality of resources. The programmable logic device may be configured for determining whether a resource is leased, reading un-encoded configuration data from a resource, and sending the configuration data to a first unit, if the resource is not leased. The programmable logic device may further be configured for reading encoded configuration data from a resource, decoding the configuration data, sending the configuration data that was decoded to a first unit, and logging use of the resource by the first unit, if the resource is leased.

Structure for securing leased resources on a computer

Embodiments of the invention provide a novel and non-obvious method, system and computer program product for securing of leased resources on a computer. In one embodiment of the invention, a computer for securing resources may comprise at least one processor, a plurality of resources, wherein each resource is associated with configuration data and a programmable logic device connected to each of the plurality of resources. The programmable logic device may be configured for determining whether a resource is leased, reading un-encoded configuration data from a resource, and sending the configuration data to a first unit, if the resource is not leased. The programmable logic device may further be configured for reading encoded configuration data from a resource, decoding the configuration data, sending the configuration data that was decoded to a first unit, and logging use of the resource by the first unit, if the resource is leased.

Securing leased resources on a computer

A scalability card for use with a plurality of computer blades. The computer blades are releasably securable in a parallel configuration, wherein each blade includes a circuit board and a processor operatively coupled to the circuit board. Each processor is in electronic communication with a scalability connector on a floating plate that is loosely secured to the computer blade. Furthermore, each scalability connector is preferably disposed in a common plane extending perpendicular to the plurality of parallel computer blades. The scalability card includes a plurality of electronically interconnected scalability connectors arranged for rough alignment with the scalability connectors of each computer blade. In addition, the scalability card preferably includes at least one alignment feature for engaging each floating plate and, therefore, providing fine alignment of the scalability connector on each floating plate to one of the scalability connectors of the scalability card.

Processor scaling across multiple computer blades

Methods and systems are disclosed for providing independent clock failover for scalable blade servers that include assigning a server blade to one of a plurality of clock failover groups, providing a plurality of independent clock signals to the clock generator of the server blade, wherein one of the plurality of independent clock signals is an active clock signal, detecting a failover condition for the clock failover group assigned to the server blade, and switching the active clock signal, in response to the detected failover condition, from one independent clock signal to another independent clock signal.

Providing independent clock failover for scalable blade servers

A computer has at least one adapter card slot for receiving an optional adapter card. A cover plate is rotatable hinged and has open and closed positions. In the closed position, the cover plate covers the adapter card slot and inhibits the insertion or removal of an adapter card. When the cover plate is raised into the open position, a tab on the back of the cover plate is rotated out of the slot of an optical switch, and the optical switch then signals circuitry to remove power and bus signals from the adapter card slot; thereby permitting the adapter card to be removed from or inserted into the slot without removing power to the entire computer. When the cover plate is returned to the closed position, the tab is reinserted into the slot of the optical switch, which in turn signals the circuitry to return power and bus signals to the adapter card slot. A locking tab firmly clamps the adapter card bracket to the housing bracket; thereby providing a good ground connection from the adapter card to the computer housing.

Hot plug adapters using optical switches

Growing community of inventors

Apex, NC, United States of America

Andrew S Heinzmann