845 results about "Hot swapping" patented technology

Improved techniques for rendering a peripheral device removable (e.g., unpluggable) are disclosed. According to one aspect of the invention, the peripheral device is rendered removable from a host computer without preparatory user actions. In effect, the peripheral device can be automatically prepared for removal in the event that its user removes (unplugs) it from its host computer. According to another aspect of the invention, the peripheral device includes a data storage device that is mounted to a file system of the other computer when the other computer desires access to the data storage device. Otherwise, the data storage device is normally unmounted so that if the peripheral device were to be removed (e.g., unplugged) no harm or damage to data stored therein would occur. These aspects of the invention can be utilized alone or in combination with one another. The invention is particularly well suited for peripheral devices that are media players which are “hot” unpluggable without detrimental consequences.

A system and method for replacing file system processors, also known as hot swapping, is described. The system and method operate on a fault-tolerant network file system that includes a first file server that is operably connected to a network fabric and a second file server that is operably connected to the network fabric. The fault-tolerant network file system includes a first disk array that is operably coupled to the first file server and to the second file server and a second disk array that is operably coupled to the first file server and to the second file server. First file system information is loaded on the first file server. The first file system information includes a first intent log of proposed changes to first metadata. Second file system information is loaded on the second file server. The second file system information includes a second intent log of proposed changes to second metadata. The first file server has a copy of the second metadata, and the second file server maintains a copy of the first metadata, thereby allowing the first file server to access files on the second disk array in the event of a failure of the second file server.

PCT No. PCT / AU96 / 00637 Sec. 371 Date Oct. 23, 1998 Sec. 102(e) Date Oct. 23, 1998 PCT Filed Oct. 10, 1996 PCT Pub. No. WO97 / 14206 PCT Pub. Date Apr. 17, 1997A modular power supply (2) suitable for application as an uninterruptable power supply for use with electrical equipment such as computers. A module (6) of the power supply may include a battery (32), a charging circuit for the battery (34), a power supply circuit coupled to mains electricity and the battery (30, 36, 40), and a control circuit (38) for selectively providing power to the electrical equipment (12) by way of the power supply circuit from either mains electricity (10) or the battery as source. The module is also provided with a coupling which is adapted to connect the module in parallel with at least one other module. A housing may be provided to receive a plurality of modules, which are connected together in parallel by way of plugs and sockets when received in the housing. The plugs and sockets and the control circuit may be adapted to enable "hot-swapping" of the modules from the housing. The modules may also be interconnected in the housing by way of a control line (20) which enables communication of the modules for making a majority rules decision concerning the provision of power from the mains or battery on the basis of fluctuations in the electrical mains supply.

A surgical headlamp containing dual lamp housings, each containing one or more LED light sources is featured. Both lamp housings may be adjusted so that light beams emitted by each may be selectively converged at a spot a predetermined distance in front of the lamp housings. Each lamp housing typically contains, in addition to the LED(s), one or more reflectors to gather and direct light generated by the LED(s) forward to an illuminated work area. Batteries, preferably rechargeable, mounted either on the headband supporting the headlamp on a user's head or external to the headband, are used to power the LED(s). Switch and / or dimming circuitry may be provided. Hot swapping, a capability whereby batteries may be interchanged during a lengthy surgical procedure, is also provided.

Embodiments of a system and method for providing class dependency graph-based class loading and reloading may be used to segregate namespaces in a graph-centric way, and may provide a set of normalized topologies that may be used to efficiently support hot-swapping of programmatic logic such as classes, applets, and beans, among other applications. Embodiments may provide a domain-independent, flexible and robust namespace segregation technique that is based on the dependency between the various classes and not on details like the roles the classes play. The problem of segregating namespaces is formulated as a graph theory problem, and a solution is sought through graph techniques. The graph may be normalized by identifying and grouping interdependent classes and non-interdependent classes in separate groups. A directed dependency relationship of the groups may be determined using the relationships between the member classes of the groups.

A system and method for replacing file system processors, also known as hot swapping, is described. The system and method operate on a fault-tolerant network file system that includes a first file server that is operably connected to a network fabric and a second file server that is operably connected to the network fabric. The fault-tolerant network file system includes a first disk array that is operably coupled to the first file server and to the second file server and a second disk array that is operably coupled to the first file server and to the second file server. First file system information is loaded on the first file server. The first file system information includes a first intent log of proposed changes to first metadata. Second file system information is loaded on the second file server. The second file system information includes a second intent log of proposed changes to second metadata. The first file server has a copy of the second metadata, and the second file server maintains a copy of the first metadata, thereby allowing the first file server to access files on the second disk array in the event of a failure of the second file server.

Presently described is a system and method for switching multimedia data communications, including but not limited to Voice over IP (VoIP) telephony, cable TV, digital audio and video. The system utilizes a single, integrated device to provide all PacketCable-compliant functionality, including enhanced user privacy, compliance with CALEA, E911 and other mandated services not available in conventional distributed PacketCable systems. High speed and efficient, low cost operation are provided by means of an optimized data unit encapsulation scheme for internal switching and routing. A proprietary fiber optic backplane and removable optical connectors are used to enable lightspeed internal communications hot-swapping of components. Furthermore, the present system is extensible to all forms of digital data switching and is secure, resistant to Denial of Service attacks, and fault-resilient.

The invention provides a method for realizing hot-plug of PCIE (Peripheral Component Interconnect Express) equipment by CPLD (Complex Programmable Logic Device) or FPGA (Field Programmable Gate Array). A hardware system comprises PCIE HOST, CPLD / FPGA, PCIE HOT-PLUG CONTROLLER, and a PCIE insertion groove co-constructed system hardware platform, wherein multiple PCA9555 functional modules are hung under the PCIE HOST, and the function of converting SMBUS (System Management Bus) into GPIO (General Purpose Input / Output) is simulated in the CPLD / FPGA by the PCA9555 functional modules; different PCA9555 are distinguished by addresses A2, A1 and A0; the PCIE HOST communicates with the PAC9555 by the SMBUS; and the sequence control of a computer system and the hot-plug control of the PCIE equipment are integrated, and the PCA9555 function is realized by a programmable logic device CPLD / FPGA. Therefore, PCA9555 chips are not needed, the device use is reduced, the system cost is lowered, the power consumption is reduced, the board card space is saved, the computer system is lower in power consumption, and the reliability, stability and expandability are improved.

Described herein is a portable storage device that stores a hydrogen fuel source. The storage device includes a bladder that contains the hydrogen fuel source and conforms to the volume of the hydrogen fuel source. A housing provides mechanical protection for the bladder. The storage device also includes a connector that interfaces with a mating connector to permit transfer of the fuel source between the bladder and a device that includes the mating connector. The device may be a portable electronics device such as a laptop computer. Refillable hydrogen fuel source storage devices and systems are also described. Hot swappable fuel storage systems described herein allow a portable hydrogen fuel source storage device to be removed from a fuel processor or electronics device it provides the hydrogen fuel source to, without shutting down the receiving device or without compromising hydrogen fuel source provision.

A method, system, and data processing system for dynamic detection of problem components in a hot-plug processing system and automatic removal of the problem component via hot-removal methods without disrupting processing of the overall system. A data processing system that provides a non-disruptive, hot-plug functionality is designed with a additional logic for initiating and / or completing a sequence of factory level tests on hot-pluggable components to determine if the component if functioning properly. When a component is not functioning properly, the OS re-allocates the workload of the component to other component so the system, and when the OS completes the re-allocation, the service element initiates the hot removal of the component so that the component is logically and electrically separated from the system.

Systems, especially operating systems, are becoming more complex to the point where maintaining them by humans is becoming nearly impossible. Many corporations have recognized this trend and have begun investing in autonomic technology. Autonomic technology allows a piece of software to monitor, diagnose, and repair itself. This can be used for improved performance, reliability, maintainability, security, etc. Disclosed herein is a mechanism to allow operating systems to hot swap a piece of operating system code, while continuing to offer to the user the service which that code is providing. This can be used, for examples, to increase the performance of an application or to fix a detected security hole live without bringing the machine down. Some autonomic ability will be mandatory in next generation operating system for without it they will collapse under their own complexity. The invention offers a key component of being able to achieve autonomic computing.

Methods of hot-swapping a logical volume manager (LVM) and updating an associated extent map are presented. Methods for migrating a virtual machine running an application using an LVM from one physical machine to another physical machine are also presented. The LVM can be used by a database application or other applications in a single-node or multi-node environment. The LVM is shut down, version numbers for each segment of its associated extent map are saved, and a new LVM is started. The new LVM's extent map is compared with the old extent map, and segments in the LVM which have changed are selectively updated.

A disposing structure of industrial computer chassis includes a chassis shell, two motherboard trays and a back plate. The interior of the chassis shell is divided into a storage unit section and a motherboard section. The interior of the storage unit section is arranged at least one storage unit, while two motherboard trays are disposed in the motherboard section. The interior of each motherboard tray is arranged a motherboard. In the motherboard trays, at least one motherboard tray is extended a wedge frame toward the storage unit section. A transfer card having a hot swapping function is arranged on the wedge frame and is arranged by inserting into the corresponding motherboard. In addition, a back plate is arranged between the storage unit section and the motherboard section. Corresponding to the wedge frame, a slot capable of a hot swapping function is arranged on the back plate. In so doing, the transfer card may be inserted into the slot, thereby, providing a hot swapping function.

Method for ‘Cool-Swap’, ‘Warm-Swap’ and ‘Hot-Swap’ of ‘Fixed’‘System’ hard disk(s) in and out of the computer and for re-cycling the computer between ‘diskly’ state to ‘diskless’ state by combining the following features in one way or the other: separating the power supply of the ‘Fixed’‘System’ hard disk(s) from the internal power supply that is supplying power to other components of the computer, in particular the motherboard; taking the operating system, capable of being taken to run as ramdisk-based operating system, in control of the computer to run as ramdisk-based operating system; putting the computer into different power management states; and issuing commands or instructions for logical disconnection and / or re-connection of hard disk(s).