41 results about "Fault tolerant network" patented technology

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.

A data communication system and an associated network node implementation is disclosed that, in certain embodiments, uses single-channel bi-directional communication links between nodes to send frames of data. The network nodes can be connected together in a ring or daisy chain topology with data frames sent in alternating directions through the bi-directional links. Such networks initially configured in a physical ring topology can tolerate single point failures by automatically switching to a logical daisy chain topology.

A system and method for providing a fault-tolerant remote controlled computing device. A multi-tasking operating system and at least one primary process are executed on the computing device. A first monitor process determines whether any primary process is in a fault state. In response to any primary process being in a fault state, the first monitor process resolves the fault state of each such primary process. In certain embodiments, a local copy of a common configuration file and multimedia content are stored on the computing device. The computing device polls a server at pre-determined time intervals via a public Internet connection for updates to one or more processes, the local copy of the common configuration file, and the multimedia content. In response to updates being available from the server, the computing device downloads one or more updates via a fault-tolerant network connection and plays the multimedia content based on instructions contained within the local copy of the central configuration file. In one configuration, a user-defined notification system is provided which allows users to define threshold values. Once the threshold values are satisfied, one or more users may be notified.

At least one embodiment of this invention pertains to an abstraction layer that provides a consistent interface, with client-side and server-side implementations, to allow web client to interact with other web clients (that are connected to a common interactive event) in real-time over standard web ports without the web clients being tied to a specific real-time communications platform. At least some embodiments described herein contemplate methods and systems for establishing web communication among multiple web clients by providing a layer of abstraction between the web clients and the interactive session using interfaces to an Open Real-Time Connectivity (ORTC) layer. The system may use authentication methods to validate the web communications. The system may be implemented on a scalable, load-balanced, and fault-tolerant network.

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.

Recovery systems and methods for sustaining the operation of a plurality of networked computers (20a,20b) in the event of a fault conditions are described. The basic recovery system comprises a plurality of virtual machines (31a,31b) installed on a recovery computer (30), each virtual machine being arranged to emulate a corresponding networked computer, and the recovery computer being arranged, in the event of a detected failure of one of the networked computers, to activate and use the virtual machine which corresponds to the failed networked computer (20). The recovery computer (30) may be located on the same network (12) as the networked computers (20), or alternatively on a remotely located local network in case of failure of the entire local network (12).

Devices, systems and methods for managing communications traffic on a fault tolerant network are disclosed. The exemplary system may include a fault tolerant network with at least two nodes and at least two channels of communication. Each channel of communication is in communication with each of the two nodes. Each node selectively communicates on one of the plurality of channels. A switch is in communication with the at least two channels. The switch receives network traffic and terminates network traffic on one or more of the channels. The termination of network traffic causes a fault tolerance manager to reroute network traffic on one of the two communication channels based on received network traffic.

Devices, systems and methods for managing communications traffic on a fault tolerant network are disclosed. The exemplary system may include a fault tolerant network with at least two nodes and at least two channels of communication. Each channel of communication is in communication with each of the two nodes. Each node selectively communicates on one of the plurality of channels. A switch is in communication with the at least two channels. The switch receives network traffic and terminates network traffic on one or more of the channels. The termination of network traffic causes a fault tolerance manager to reroute network traffic on one of the two communication channels based on received network traffic.

The invention discloses an industry real-time control Ethernet redundancy fault tolerance network system and a method, including at least two control domains and at least one public domain connected with all control domains, wherein, each control domain adopts multipoint crossed redundancy ring network structure, core nodal point equipments on cross points are all connected with primary nodal point equipment and backup nodal point equipment of the public domain. On the basis of the prior ring network redundancy, the invention also realizes the redundancy of the core equipments needing external communication; when a primary core exchanger fails, a core exchanger which works in the backup mode is switched to work in the primary mode, the switch time is quite short. The invention also increases the double redundancy function of a public domain exchanger, the RSTP protocol is applied to the connection between the public domain and the control domains, which considers requirements on quickness as well as simpleness. In the invention, the core exchanger of the control domains adopts the ACL or the cross VLAN to replace a special bridge, thereby reducing equipment category and possible fault points and lowering delay.