128results about How to "Good for load balancing" patented technology

An array of storage devices may be provided in which data is both striped and mirrored across the array. Data may be organized in stripes in which each stripe is divided into a plurality of stripe units. The stripe units may be mapped sequentially to consecutive storage devices in the array for each data stripe. Each data stripe is also mirrored within the array as a mirrored data stripe. Each mirrored data stripe is also divided into a plurality of stripe units. The stripe units of the mirrored stripes are distributed throughout the array according to a mapping that provides for load balancing during a reconstruction operation. According to one embodiment, stripe units for mirrored stripes are distributed according to a rotational group such that each mirrored stripe is rotated on the array by one more position than the previous mirrored stripe and wherein the rotational group is repeated as necessary. Alternatively, the mirrored stripe units may be distributed according to other permutations to improve load balancing during reconstruction of a failed device. In other embodiments, in addition to mapping mirrored stripe units to balance read operations during reconstruction, one or more spare storage devices may be striped throughout the array to improve load balancing for write operations during reconstruction.

The present invention provides improvements to load balancing by providing a load balancing solution that allows a user to select metrics, weights and thresholds from metrics collected or determined by a load balancing appliance as well as metrics obtained from another device, such as a server running the service. The systems and methods described providing a load balancing technique in which load balancing decisions can be made based on metrics known by another device monitoring such metrics. The load balancing appliance uses a network management protocol and communication model, such as a Simple Network Management Protocol (SNMP), to identify and collect metrics from a server, service or other device. These metrics are available on the load balancing appliance with appliance determined metrics. Via a configuration interface of the appliance, a user can select one or more appliance determined metrics and / or the metrics obtained via the network management protocol to determine the load of a service.

A method of discovering multi-mode mobile terminals (13) in a heterogeneous network environment, each multi-mode mobile terminal (13) having at least one interface for sending packet data to and / or receiving packet data from a home radio communication network (11) and a foreign radio communication network (12), said home radio communication network having a different access technology from said foreign radio communication network, each multi-mode mobile terminal (13) performing the steps of:(a) listening to said foreign radio communication network (12);(b) receiving and storing a foreign network indicator for indicating presence of said foreign radio communication network (12); and(c) transmitting said foreign network indicator to said home radio communication network (11);whereby said home radio communication network (11) may store a database comprising a mapping between a multi-mode mobile terminal identity, a home network indicator and a foreign network indicator, to facilitate interworking of said home and foreign radio communication networks.