Amplidata N.v.

Western Digital Technologies, Inc.

Wim De Wispelaere

Frederik De Schrijver

Bastiaan Stougie

Wouter Van Eetvelde

Romain Raymond Agnes Slootmaekers

Joost Yervante Damad

Kristof Mark Guy De Spiegeleer

Bart De Vylder

Koen De Keyser

Bruno Keymolen

Kristof De Spiegeleer

Arne Vansteenkiste

Stefaan Vervaet

Sander De Dycker

Joris Walraevens

Dieter Fiems

Willem Mélange

Apoorv Saxena

The disclosed technology includes an example system that has a request throttling manager that is configured to receive a first file data request, queue the first file data request in a first request queue, and process the first file data request based on the first token bucket. The first token bucket includes a sufficient first quantity of first tokens to process the first file data request. The system further includes a storage manager configured to access one or more storage nodes of a plurality of storage nodes of a distributed storage system in response to the first file data request.

Request throttling in distributed storage systems

According to an example method, a read request associated with a second data object is received, where the second data object is identifiable by a second object identifier. A second segment index number is determined that would identify a location of the second data object is absent from a metadata index. In response to determining that the second segment index number is absent from the metadata index, an incrementally lower index is selected in the metadata index, where the incrementally lower index is a first segment index number that identifies a location of the first data object. The second data object is retrieved using the first segment index number and a first offset corresponding to the first segment index number.

Metadata reduction in a distributed storage system

A method and computer device for storage and retrieval of a data object on a storage medium. The method includes steps of disassembling the data object into a predetermined number of redundant sub blocks, storing the redundant sub blocks on the storage medium, retrieving at least a predetermined multiple of a minimal spreading requirement of the redundant sub blocks from the storage medium, and assembling the data object from any combination of a particular number of the redundant sub blocks, the particular number corresponding to a predetermined multiple of a minimal spreading requirement. The computer device includes modules for performing the steps.

Object storage system for an unreliable storage medium

A storage node for a distributed object storage system, comprising a control board configured to receive a parameter for setting predetermined allowable temperature ranges through a serial port, and sending a signal through said serial port for indicating one or more of said measurements of temperatures lies outside said predetermined allowable ranges. The control board is further configured to receive a parameter for controlling the switching on or off the storage elements through said serial port by sending a signal through said serial port to indicate which storage elements is switched on or off.

Distributed object storage system comprising low power storage nodes

There is provided a distributed object storage system that includes several performance optimizations with respect to efficiently storing data objects when coping with a desired concurrent failure tolerance of concurrent failures of storage elements which is greater than two and with respect to optimizing encoding/decoding overhead and the number of input and output operations at the level of the storage elements.

Hybrid distributed storage system

A distributed object storage system comprises an encoding module configured to calculate for a plurality of predetermined values of the spreading requirement the cumulative size of the sub fragment files when stored on the file system with the predetermined block size; and select as a spreading requirement from said plurality of predetermined values a calculated value that is equal to one of said predetermined values for which the cumulative size is minimal.

Distributed object storage system comprising performance optimizations

A distributed object storage system includes several performance optimizations with respect to storing very small data objects, very large data objects and CRC calculations.

The invention concerns a distributed object storage system () that comprises a spreading module () which makes a selection of a number of storage elements () being larger or equal to a desired spreading width by means of a spreading policy that comprises rules for selecting storage elements () in function of a first hierarchy level identifier () and/or a second hierarchy level identifier ().

Hierarchical, distributed object storage system

The invention concerns a distributed object storage system () comprising a maintenance agent () instructing an encoding module () to disassemble a repair data object into a specific number of repair sub blocks, this specific number being equal to or greater than said number of missing sub blocks and less then the predetermined number of sub blocks during a regular storage operation.

Growing community of inventors

Ghent, Belgium

Wim De Wispelaere