Hewlett-packard Development Company, L.p.

Hewlett Packard Enterprise Development LP

Compaq Computer Corporation, Inc.

Jeffery L Galloway

Robert A Lester

John Edward Larson

John MacLaren

Christian H Post

Eric Rose

Tim W Majni

Siamak Tavallaei

Gary J Piccirillo

Jerome J Johnson

Anisha Anand

George D Megason

Paul A Santeler

Brett D Roscoe

Ho M Lai

Patrick Lee Ferguson

Jeffrey S Autor

John S Lacombe

Benjamin H Clark

Dan Fink

Bret D Roscoe

Theodore F Emerson

Curtis R Jones

Michael E McGowen

Paul J Muraski

Robert E Van Cleve

Mark I Bain

Richard L Purvis

Paul S Bailey

Stephen D Cochran

One embodiment is a remote system management controller that virtualizes a video controller for a server that is managed by a remote computer.

Virtualizing a video controller

A computer system includes a plurality of memory modules that contain semiconductor memory, such as DIMMs. The system includes a host/data controller that utilizes an XOR engine to store data and parity information in a striped fashion on the plurality of memory modules to create a redundant array of industry standard DIMMs (RAID). The host/data controller also interleaves data on a plurality of channels associated with each of the plurality of memory modules. The system implements error interrupt control, ECC error reporting, cartridge error power down procedures in response to command errors, storage of error information in unused segments of each DIMM, hot-pug procedure indicator and remote tagging capabilities of memory cartridges and DIMMs.

Error indication in a raid memory system

A processor-based device having a plurality of memory cartridges secured within a chassis by a lever system. The processor-based device comprises an indication system to indicate memory system operating conditions. Each memory cartridge has a protective assembly to protect memory elements within the memory cartridge when the memory cartridge is removed from the processor-based device. The processor-based device is operable such that at least one memory cartridge may be removed from the processor-based device without affecting operation of the processor-based device.

Removable memory cartridge system for use with a server or other processor-based device

A system and method for controlling computer resources on an interconnected system via an extensible and dynamic rule set. The extensible and dynamic rule set is capable of both monitoring and modifying the condition and operation of the interconnected system. An editor provides the ability to create, delete or modify the individual rules within the extensible and dynamic rules set. An engine is used to trigger individual rules. A rule may be created, deleted, modified or compiled without the recompilation of the engine. Such rules are triggered when conditions specified in the rule are found to exist on the interconnected system. When such conditions exist, the rule is triggered and the operation of the interconnected system is modified as specified in the rule.

Extensible computer management rule engine

A software implementation of an application watchdog, comprising a restart service operating in the user mode and a watchdog driver operating in the kernel mode of a computer operating system. The driver incorporates a system thread configured to monitor a plurality of user applications operating in the user mode. The driver provides a first IOCTL signal interface for communicating control signals between the watchdog driver and one of the user applications and a second IOCTL signal interface for communicating control signals between the watchdog driver and the restart service. A communication interface exists for coordinating timer events with the operating system scheduler. If the system thread does not receive a message from one of said applications within an allotted period of time, the timer event alerts the watchdog driver that the allotted time has elapsed and the watchdog driver signals the restart service to restart that application.

Application-level software watchdog timer

The control logic for a hot-pluggable memory cartridge for use in a redundant memory system. To implement a hot-pluggable memory cartridge in a redundant memory system, control logic to control the sequence of events for powering-up and powering-down a memory cartridge is provided.

Hot replace power control sequence logic

A computer system in accordance with the present invention provides a method of communicating events from a server to remote procedure call clients. The disclosed technique begins with a remote procedure call by a remote procedure call client to a server to establish an initial client-server connection. Next, there is a remote procedure call to create a guaranteed delivery communication conduit, such as a named pipe, between the server and client and to create a server asynchronous event thread in a blocked state for blocking execution of the server asynchronous event thread. A client asynchronous event thread in the client is then created to open the named pipe. If the server detects an event, an event message is generated which places the server asynchronous event thread in an unblocked state to allow execution of the server asynchronous event thread. Event data may then be transmitted across the named pipe from the server to the client. After transfer of the event data is complete, the server asynchronous event thread is blocked. By unblocking the server asynchronous event thread when an event is detected and blocking the server asynchronous event thread following transmission of the event through a named pipe to the client, asynchronous events may be communicated by a server to remote procedure call clients. As a result, it is not necessary for a remote procedure call client to poll a server to receive asynchronous event information.

Method of communicating asynchronous events to remote procedure call clients

A method of adding memory capacity to a computer system. The computer system comprises a redundant memory system including a plurality of memory cartridges. By powering-down a memory cartridge, adding an additional memory module to the memory cartridge, and powering-up the memory cartridge for each memory cartridge in the system, the system can transition from a redundant mode of operation to a non-redundant mode of operation for each power-down, thus allowing the computer system to remain functional during the addition of the memory module. Alternatively, memory cartridges with higher memory capacity than those currently present in the computer system can be used to replace existing memory cartridges in the computer system, using the same techniques.

Hot-upgrade/hot-add memory

A method of replacing a memory module in a computer system. Specifically, a method for replacing a memory module in a segment of a redundant memory system, without powering-down the memory system.

Hot-replace of memory

A computer system in accordance with the present invention provides a method of communicating asynchronous events from a mini-port driver of a computer system to a software component without polling the mini-port driver. The computer system provides a monolithic driver as a dispatch between a mini-port driver and a software component. Until an asynchronous event is detected, an event thread in the monolithic driver to a software component is blocked. When an asynchronous event is detected by the mini-port driver, the mini-port driver calls the monolithic driver with a monolithic driver entry point which queues the event and unblocks the event thread. The monolithic driver provides the asynchronous event to the software component through the unblocked event thread. The event thread is then re-blocked and remains blocked until another asynchronous event is detected. Asynchronous events are thereby communicated from a mini-port driver to a software component without polling the mini-port driver.

Method of communicating asynchronous elements from a mini-port driver

Growing community of inventors

The Woodlands, TX, United States of America

Jeffery L Galloway