摘要:
There is provided a method of making an optical polymer waveguide having an arbitrary refractive index profile, the method including: a) providing a first input optical beam having a first beam intensity profile and a second input optical beam having a second beam intensity profile; b) combining the first and second input optical beams to form an output optical beam having an output beam intensity profile; and c) forming the optical waveguide on a substrate by: exposing the optical materials of the waveguide to the output optical beam; and curing the optical materials using said output optical beam.
摘要:
There is provided a method and apparatus for power management in a storage resource. The storage resource comprises at least one RAID array including a plurality of physical drives. The method comprises: determining a reduced number of physical drives within a RAID array upon which data is to be concentrated; moving data stored on said RAID array and/or targeting data written to said RAID array to one or more of said reduced number of physical drives such that said data is concentrated on said reduced number of physical drives in said RAID array; and selectively applying power management logic to enable, based on at least one power management criterion, one or more physical drives in said RAID array to be powered down or to be supplied with reduced power.
摘要:
An apparatus and method of providing conditional access to an electronic data store including a storage controller and a data storage resource. The method includes receiving, at the storage controller, a network request for access to the data storage resource from a client, the request including at least one required parameter defining the requested connection, obtaining information on the performance of the data storage resource, determining, based upon the information, whether a) the data storage resource can meet the or each required parameter of the request; and b) meeting the or each required parameter of the request will not violate any previously agreed parameters defining existing connections on the data storage resource; and denying the request if at least one of a) and b) are determined to be negative.
摘要:
A method of sampling sensor data from a computing system is presented. The computing system includes a plurality of components and a sensor network for monitoring the computing system. The sensor network includes primary sensor nodes operable to obtain primary parameter data from a measurement of a primary parameter of the components, and secondary sensor nodes operable to obtain secondary parameter data from a measurement of secondary parameters of the components. The method includes: a) obtaining secondary parameter data from secondary sensor nodes relating to components; b) processing, in a computing device, the secondary parameter data; c) determining, based upon determined or pre-determined relationships between the secondary parameters and the primary parameter, a sample rate for the primary parameter data for the components; and d) obtaining primary parameter data from the primary sensor nodes relating to components at the determined sample rate.
摘要:
A method of monitoring the performance of a device is presented, each storage device being operable to receive storage requests and includes a queue for incoming storage requests and a physical storage medium, the method includes: a) obtaining data relating to the device parameters of: throughput of storage requests to the storage device; queue time for one or more requests on the storage device; and the time required to complete one or more storage requests on the storage device; b) generating a model relating to the expected distribution of the device parameters on the storage device during normal operation; c) monitoring the parameters during operation of the storage device; d) comparing the distribution of the monitored parameters during operation of the storage device with the expected distribution of the parameters; and e) identifying a fault on the storage device based on the comparison.
摘要:
An apparatus and method of providing conditional access to an electronic data store including a storage controller and a data storage resource. The method includes receiving, at the storage controller, a network request for access to the data storage resource from a client, the request including at least one required parameter defining the requested connection, obtaining information on the performance of the data storage resource, determining, based upon the information, whether a) the data storage resource can meet the or each required parameter of the request; and b) meeting the or each required parameter of the request will not violate any previously agreed parameters defining existing connections on the data storage resource; and denying the request if at least one of a) and b) are determined to be negative.
摘要:
An optical alignment system for aligning an optical component is provided. The system includes an alignment component configured to be moveable in a plane and in a fixed relationship with the optical component. Typically the alignment component houses an optical fibre MT ferrule. One or more driving components are further provided typically in the form of a ball headed adjustment screw. The driving components are configured to be moveable, relative to the alignment component, in a first linear direction. At least a component of the first linear direction is parallel with the normal of the plane. The driving component, when forced along the first linear direction and in contact with the alignment component, imparts a force upon the alignment component, in the plane, to move the optical component in the plane. An alignment frame accommodating the driving components may also be provided.
摘要:
The present disclosure relates to an electronic apparatus (100) comprising a backplane (120) and methods of assembling and disassembling such an apparatus. The electronic apparatus (100) comprises a chassis (101) having plural walls and a circuit board (140) fastened to a wall of the chassis, a surface of the circuit board having a plurality of conductive pads (146). A backplane (120) is fastened in a received position in the chassis substantially perpendicular to the circuit board. The backplane has a connector (130) at an edge of the backplane, the connector comprising a plurality of sprung conductive elements (132,134) which extend outwards beyond the edge of the backplane to make electrical contact with respective conductive pads (146) on the circuit board.
摘要:
A data storage system and a method of cooling the data storage system are presented. The data storage system includes: an enclosure; one or more drawer structures disposed within the enclosure, wherein at least one of the drawer structures is configured to receive one or more electronic devices; and one or more temperature control elements positioned adjacent to the bottom of the at least one drawer structure, wherein at least one of the temperature control elements is arranged in use to thermally communicate with at least one of the electronic devices.
摘要:
An optical printed circuit board, including at least one optical waveguide for carrying optical signals on the optical printed circuit board; and a trench formed adjacent the at least one optical waveguide, wherein the trench contains a light absorptive material to absorb light that strays from the at least one waveguide.